15 years ago[PATCH] ppc: Fix build with CONFIG_CHRP not set
Benjamin Herrenschmidt [Wed, 16 Nov 2005 02:40:43 +0000]
[PATCH] ppc: Fix build with CONFIG_CHRP not set

Building ARCH=ppc for multiplatforms with CONFIG_CHRP not set fails
due to some unshielded code in xmon

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years agopowerpc: Move ppc64 boot wrapper code over to arch/powerpc
Paul Mackerras [Wed, 16 Nov 2005 02:38:21 +0000]
powerpc: Move ppc64 boot wrapper code over to arch/powerpc

This also extends the code to handle 32-bit ELF vmlinux files as well
as 64-bit ones.  This is sufficient for booting on new-world 32-bit
powermacs (i.e. all recent machines).

Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: replace page_to_virt() with lowmem_page_address() for Book-E
Kumar Gala [Tue, 15 Nov 2005 17:03:24 +0000]
[PATCH] powerpc: replace page_to_virt() with lowmem_page_address() for Book-E

page_to_virt and lowmem_page_address provided equiavlent functionality
so use the more standard lowmem_page_address

This also addresses build issue in ARCH=powerpc since page_to_virt()
has been removed from include/asm-powerpc/page.h

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: add new powerbooks to feature table
Olof Johansson [Tue, 15 Nov 2005 17:05:14 +0000]
[PATCH] powerpc: add new powerbooks to feature table

Hi,

The previous PowerBook patch didn't contain the feature table updates
for ARCH=powerpc. Here they are.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] ppc: Fix boot with yaboot with ARCH=ppc
Benjamin Herrenschmidt [Tue, 15 Nov 2005 07:21:45 +0000]
[PATCH] ppc: Fix boot with yaboot with ARCH=ppc

The merge of machine types broke boot with yaboot & ARCH=ppc due to the
old code still retreiving the old-syle machine type passed in by yaboot.
This patch fixes it by translating those old numbers. Since that whole
mecanism is deprecated, this is a temporary fix until ARCH=ppc uses the
new prom_init that the merged architecture now uses for both ppc32 and
ppc64 (after 2.6.15)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] PowerBook 6,1: headphone not detected after suspend
Guido Guenther [Tue, 15 Nov 2005 06:28:05 +0000]
[PATCH] PowerBook 6,1: headphone not detected after suspend

ever since suspend to disk works I had the problem that headphone
(un)plugging doesn't get detected properly anymore after the first
resume.
Reloading the module worked around this ever since, however the real
cause of the problem was that after a resume the driver only got
interrupts on "unplug" not on "plug". Reactivating the headphone status
interrupt in tumbler_resume fixes this. This shouldn't cause
any trouble with software suspend, but it would be nice if somebody
could confirm this:

Signed-off-by: Guido Guenther <agx@sigxcpu.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: pci_64 fixes & cleanups
Benjamin Herrenschmidt [Tue, 15 Nov 2005 05:05:33 +0000]
[PATCH] powerpc: pci_64 fixes & cleanups

I discovered that in some cases (PowerMac for example) we wouldn't
properly map the PCI IO space on recent kernels. In addition, the code
for initializing PCI host bridges was scattered all over the place with
some duplication between platforms.

This patch fixes the problem and does a small cleanup by creating a
pcibios_alloc_controller() in pci_64.c that is similar to the one in
pci_32.c (just takes an additional device node argument) that takes care
of all the grunt allocation and initialisation work. It should work for
both boot time and dynamically allocated PHBs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: More debugging fixups
Michael Ellerman [Tue, 15 Nov 2005 04:16:38 +0000]
[PATCH] powerpc: More debugging fixups

Add a few more missing includes of udbg.h

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: Fixup debugging in lmb.c
Michael Ellerman [Tue, 15 Nov 2005 03:49:22 +0000]
[PATCH] powerpc: Fixup debugging in lmb.c

Somewhere we lost the include of udbg.h in lmb.c. While we're there, add a DBG
macro like every other file has and use it in lmb_dump_all().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] powerpc: update defconfigs
Benjamin Herrenschmidt [Tue, 15 Nov 2005 03:40:25 +0000]
[PATCH] powerpc: update defconfigs

My patch moving ppc64 RTC to genrtc was supposed to update all
defconfigs, but for some reason, the patch actually posted only had the
pseries one... ouch. This patch properly updates all defconfigs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] ppc32 8xx: update_mmu_cache() needs unconditional tlbie
Marcelo Tosatti [Mon, 14 Nov 2005 07:38:31 +0000]
[PATCH] ppc32 8xx: update_mmu_cache() needs unconditional tlbie

Currently 8xx fails to boot due to endless pagefaults.

Seems the bug is exposed by the change which avoids flushing the
TLB when not necessary (in case the pte has not changed), introduced
recently:

__handle_mm_fault():

        entry = pte_mkyoung(entry);
        if (!pte_same(old_entry, entry)) {
                ptep_set_access_flags(vma, address, pte, entry, write_access);
                update_mmu_cache(vma, address, entry);
                lazy_mmu_prot_update(entry);
        } else {
                /*
                 * This is needed only for protection faults but the arch code
                 * is not yet telling us if this is a protection fault or not.
                 * This still avoids useless tlb flushes for .text page faults
                 * with threads.
                 */
                if (write_access)
                        flush_tlb_page(vma, address);
        }

The "update_mmu_cache()" call was unconditional before, which caused the TLB
to be flushed by:

        if (pfn_valid(pfn)) {
                struct page *page = pfn_to_page(pfn);
                if (!PageReserved(page)
                    && !test_bit(PG_arch_1, &page->flags)) {
                        if (vma->vm_mm == current->active_mm) {
#ifdef CONFIG_8xx
                        /* On 8xx, cache control instructions (particularly
                         * "dcbst" from flush_dcache_icache) fault as write
                         * operation if there is an unpopulated TLB entry
                         * for the address in question. To workaround that,
                         * we invalidate the TLB here, thus avoiding dcbst
                         * misbehaviour.
                         */
                                _tlbie(address);
#endif
                                __flush_dcache_icache((void *) address);
                        } else
                                flush_dcache_icache_page(page);
                        set_bit(PG_arch_1, &page->flags);
                }

Which worked to due to pure luck: PG_arch_1 was always unset before, but
now it isnt.

The root of the problem are the changes against the 8xx TLB handlers introduced
during v2.6. What happens is the TLBMiss handlers load the zeroed pte into
the TLB, causing the TLBError handler to be invoked (thats two TLB faults per
pagefault), which then jumps to the generic MM code to setup the pte.

The bug is that the zeroed TLB is not invalidated (the same reason
for the "dcbst" misbehaviour), resulting in infinite TLBError faults.

The "two exception" approach requires a TLB flush (to nuke the zeroed TLB)
at each PTE update for correct behaviour:

Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[PATCH] ia64: cpu_idle performance bug fix
Chen, Kenneth W [Tue, 15 Nov 2005 22:37:05 +0000]
[PATCH] ia64: cpu_idle performance bug fix

Our performance validation on 2.6.15-rc1 caught a disastrous performance
regression on ia64 with netperf (-98%) and volanomark (-58%) compares to
previous kernel version 2.6.14-git7.  See the following chart (result
group 1 & 2).

  http://kernel-perf.sourceforge.net/results.machine_id=26.html

We have root caused it to commit 64c7c8f88559624abdbe12b5da6502e8879f8d28

This changeset broke the ia64 task resched notification.  In
sched.c:resched_task(), a reschedule IPI is conditioned upon
TIF_POLLING_NRFLAG.  However, the above changeset unconditionally set
the polling thread flag for idle tasks regardless whether pal_halt_light
is in use or not.  As a result, resched IPI is not sent from
resched_task().  And since the default behavior on ia64 is to use
pal_halt_light, we end up delaying the rescheduling task until next
timer tick, and thus cause the performance regression.

This fixes the performance bug.  I'm glad our performance suite is
turning up bad performance bug like this in time.

Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Tue, 15 Nov 2005 20:46:57 +0000]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

15 years agoMerge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...
Linus Torvalds [Tue, 15 Nov 2005 20:45:33 +0000]
Merge branch 'upstream-fixes' of /linux/kernel/git/jgarzik/libata-dev

15 years ago[ARM] Initialise SA1111 core before SA1111 PCMCIA
Russell King [Tue, 15 Nov 2005 19:04:22 +0000]
[ARM] Initialise SA1111 core before SA1111 PCMCIA

This avoids a BUG_ON with kref.c when SA1111 tries to register
a driver with an unregistered bus type.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

15 years ago[libata ahci] command completion fixes, improved debug msgs
Jeff Garzik [Tue, 15 Nov 2005 19:03:47 +0000]
[libata ahci] command completion fixes, improved debug msgs

- Fix a regression in command completion, which prevented
  the restart of the DMA engine after the device throws
  an error.
- Pack more hardware info into the port-reset error message.
- Promote "welcome to our timeout" message from debug msg
  to normal printk.

15 years ago[PATCH] oops-tracing: mention extended VGA
Dave Jones [Tue, 15 Nov 2005 08:09:24 +0000]
[PATCH] oops-tracing: mention extended VGA

Something I've found handy countless times when users do this..

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] Update location of ll_rw_blk.c in docs
Ben Collins [Tue, 15 Nov 2005 08:09:21 +0000]
[PATCH] Update location of ll_rw_blk.c in docs

Picked from the ubuntu-2.6 tree

The change in location for ll_rw_blk.c from drivers/block/ to block/ caused
failure to generate documentation.

Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] cciss_scsi warning fix
Grant Coady [Tue, 15 Nov 2005 08:09:20 +0000]
[PATCH] cciss_scsi warning fix

drivers/block/cciss_scsi.c:264: warning: `print_bytes' defined but not used
drivers/block/cciss_scsi.c:298: warning: `print_cmd' defined but not used

Signed-off-by: Grant Coady <gcoady@gmail.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] v850: use generic hardirq code
Christoph Hellwig [Tue, 15 Nov 2005 08:09:18 +0000]
[PATCH] v850: use generic hardirq code

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Miles Bader <miles@gnu.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] v850: Add missing include in hardirq.h
Miles Bader [Tue, 15 Nov 2005 08:09:17 +0000]
[PATCH] v850: Add missing include in hardirq.h

Signed-off-by: Miles Bader <miles@gnu.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] v850: Fix show_interrupts
Miles Bader [Tue, 15 Nov 2005 08:09:16 +0000]
[PATCH] v850: Fix show_interrupts

A variable was being used in multiple conflicting ways.  I also restructured
the code a bit for clarity.

Signed-off-by: Miles Bader <miles@gnu.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] sdladrv.c build fix
Toni Mueller [Tue, 15 Nov 2005 08:09:14 +0000]
[PATCH] sdladrv.c build fix

gcc4 doesn't allow typecasted lvals.

Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] hfc_usb: fix usb device table
Andrew Morton [Tue, 15 Nov 2005 08:09:13 +0000]
[PATCH] hfc_usb: fix usb device table

We need to use the USB_DEVICE macro here, else the modinfo aliases go all wrong.

Also, correctly terminate the table, as noted by Dave Jones <davej@redhat.com>

Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] md: make md threads interruptible again
NeilBrown [Tue, 15 Nov 2005 08:09:12 +0000]
[PATCH] md: make md threads interruptible again

Despite the fact that md threads don't need to be signalled, and won't
respond to signals anyway, we need to have an 'interruptible' wait, else
they stay in 'D' state and add to the load average.

(akpm: the signal_pending() test is unneeded - we'll fix that up in the next
round.  For now, leave it there because that's how the code used to be).

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] md: mark START_ARRAY deprecated with a date
NeilBrown [Tue, 15 Nov 2005 08:09:11 +0000]
[PATCH] md: mark START_ARRAY deprecated with a date

This was marked deprecated "after 2.6" back in the 2.5 days.  But now it
seems there isn't going to be any "after 2.6", and we deprecate by date
now.  So set a date.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] knfsd: make sure nfsd doesn't hog a cpu forever
NeilBrown [Tue, 15 Nov 2005 08:09:10 +0000]
[PATCH] knfsd: make sure nfsd doesn't hog a cpu forever

Being kernel-threads, nfsd servers don't get pre-empted (depending on
CONFIG).  If there is a steady stream of NFS requests that can be served
from cache, an nfsd thread may hold on to a cpu indefinitely, which isn't
very friendly.

So it is good to have a cond_resched in there (just before looking for a
new request to serve), to make sure we play nice.

Signed-off-by: Neil Brown <neilb@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] Add missing EXPORT_SYMBOLS() for __ide_mm_* functions on powerpc
Ben Collins [Tue, 15 Nov 2005 08:09:09 +0000]
[PATCH] Add missing EXPORT_SYMBOLS() for __ide_mm_* functions on powerpc

These exported symbols are in arch/ppc/ but missing from arch/powerpc/ for
ppc32 builds.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] ipmi: bump-driver-version
Corey Minyard [Tue, 15 Nov 2005 08:09:07 +0000]
[PATCH] ipmi: bump-driver-version

Lots of good changes to the driver lately that userspace will care about
the version of the driver.  Bump the version from 36.0 to 38.0 to be higher
than 37 that the 2.4 driver came out with a few weeks ago which doesn't
have all the same changes.

Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] Make sysctl.h (again) usable from userspace
Harald Welte [Tue, 15 Nov 2005 08:09:06 +0000]
[PATCH] Make sysctl.h (again) usable from userspace

Make sysctl.h (again) useable from userspace

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] drop "[PATCH] i386 kexec-on-panic: Don't shutdown the apics"
Vivek Goyal [Tue, 15 Nov 2005 08:09:04 +0000]
[PATCH] drop "[PATCH] i386 kexec-on-panic: Don't shutdown the apics"

A patch by Eric was merged (f2b36db692b7ff6972320ad9839ae656a3b0ee3e)
and later on reverted back (1e4c85f97fe26fbd70da12148b3992c0e00361fd).

Along with above patch, another patch was posted and has been merged
(3d1675b41b02d64bd1185903ea0d25a8c0bb6dea).  That patch was dependent on
the above patch and now it should also be reverted.

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[ARM] Use kernel/power/Kconfig
Russell King [Tue, 15 Nov 2005 11:31:41 +0000]
[ARM] Use kernel/power/Kconfig

Rather than defining our own PM option, use kernel/power/Kconfig.
This fixes build errors introduced by
bca73e4bf8563d83f7856164caa44d5f42e44cca

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

15 years agoMerge x86-64 update from Andi
Linus Torvalds [Tue, 15 Nov 2005 03:56:02 +0000]
Merge x86-64 update from Andi

15 years ago[PATCH] x86_64: Fix sparse mem
Bob Picco [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Fix sparse mem

Fix up booting with sparse mem enabled. Otherwise it would just
cause an early PANIC at boot.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Increase the maximum number of local APICs to the maximum
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Increase the maximum number of local APICs to the maximum

This is needed for large multinode IBM systems which have a sparse
APIC space in clustered mode, fully covering the available 8 bits.

The previous kernels would limit the local APIC number to 127,
which caused it to reject some of the CPUs at boot.

I increased the maximum and shrunk the apic_version array a bit
to make up for that (the version is only 8 bit, so don't need
an full int to store)

Cc: Chris McDermott <lcm@us.ibm.com>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Remove CONFIG_CHECKING and add command line option for pagefault...
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Remove CONFIG_CHECKING and add command line option for pagefault tracing

CONFIG_CHECKING covered some debugging code used in the early times
of the port. But it wasn't even SMP safe for quite some time
and the bugs it checked for seem to be gone.

This patch removes all the code to verify GS at kernel entry. There
haven't been any new bugs in this area for a long time.

Previously it also covered the sysctl for the page fault tracing.
That didn't make much sense because that code was unconditionally
compiled in. I made that a boot option now because it is typically
only useful at boot.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Make node boundaries consistent
Magnus Damm [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Make node boundaries consistent

The current x86_64 NUMA memory code is inconsequent when it comes to node
memory ranges. The exact behaviour varies depending on which config option
that is used.

setup_node_bootmem() has start and end as arguments and these are used to
calculate the size of the node like this: (end - start). This is all fine
if end is pointing to the first non-available byte. The problem is that the
current x86_64 code sometimes treats it as the last present byte and sometimes
as the first non-available byte. The result is that some configurations might
lose a page at the end of the range.

This patch tries to fix CONFIG_ACPI_NUMA, CONFIG_K8_NUMA and CONFIG_NUMA_EMU
so they all treat the end variable as the first non-available byte. This is
the same way as the single node code.

The patch is boot tested on dual x86_64 hardware with the above configurations,
but maybe the removed code is needed as some workaround?

Signed-off-by: Magnus Damm <magnus@valinux.co.jp>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Log machine checks from boot on Intel systems
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Log machine checks from boot on Intel systems

The logging for boot errors was turned off because it was broken
on some AMD systems. But give Intel EM64T systems a chance because they are
supposed to be correct there.

The advantage is that there is a chance to actually log uncorrected
machine checks after the reset.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Make ACPI NUMA and NUMA emulation peers of K8_NUMA in Kconfig
Ravikiran G Thirumalai [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Make ACPI NUMA and NUMA emulation peers of K8_NUMA in Kconfig

On x86_64 arches, there is no way to choose ACPI_NUMA without having to choose
K8_NUMA.  CONFIG_K8_NUMA is not needed for Intel EM64T NUMA boxes.  It also
looks odd if you have to select ACPI_NUMA from the power management menu.
This patch fixes those oddities.  Patch does the following:

1. Makes NUMA a config option like other arches
2. Makes topology detection options like K8_NUMA dependent on NUMA
3. Choosing ACPI NUMA detection can be done from the standard
   "Processor type and features" menu

AK: I fixed up the dependencies and changed the help texts a bit
on top of Kiran's patch.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: Shai Fultheim <shai@scalex86.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Use common sys_time64
Paolo 'Blaisorblade' Giarrusso [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Use common sys_time64

Keeping this function does not makes sense because it's a copied (and
buggy) copy of sys_time.  The only difference is that now.tv_sec (which is
a time_t, i.e.  a 64-bit long) is copied (and truncated) into a int
(32-bit).

The prototype is the same (they both take a long __user *), so let's drop
this and redirect it to sys_time (and make sure it exists by defining
__ARCH_WANT_SYS_TIME).

Only disadvantage is that the sys_stime definition is also compiled (may be
fixed if needed by adding a separate __ARCH_WANT_SYS_STIME macro, and
defining it for all arch's defining __ARCH_WANT_SYS_TIME except x86_64).

Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Set ____cacheline_maxaligned_in_smp alignment to 128 bytes
Paolo 'Blaisorblade' Giarrusso [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Set ____cacheline_maxaligned_in_smp alignment to 128 bytes

The current value was correct before the introduction of Intel EM64T support -
but now L1_CACHE_SHIFT_MAX can be less than L1_CACHE_SHIFT, which _is_ funny!

Between the few users of ____cacheline_maxaligned_in_smp, we also have (for
example) rcu_ctrlblk, and struct zone, with zone->{lru_,}lock.  I.e.  we have
a lot of excess cacheline bouncing on them.

No correctness issues, obviously.  So this could even be merged for 2.6.14
(I'm not a fan of this idea, though).

CC: Andi Kleen <ak@suse.de>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Remove asm-x86_64/rwsem.h
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Remove asm-x86_64/rwsem.h

Not needed since x86-64 always uses the spinlock based rwsems.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Remove optimization for B stepping AMD K8
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Remove optimization for B stepping AMD K8

B stepping were the first shipping Opterons. memcpy/memset/copy_page/
clear_page had special optimized version for them. These are really
old and in the minority now and the difference to the generic versions
(using rep microcode) is not that big anyways. So just remove them.

TODO: figure out optimized versions for Intel Netburst based EM64T

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Reduce number of retries for reset through keyboard controller
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Reduce number of retries for reset through keyboard controller

Old code could retry for 10 seconds worst time. Only try it
for one second now.

Suggested by Yinghai Lu

Cc: Yinghai.Lu@amd.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: x86_64/i386 fix Intel cache detection code assumption about threads...
Siddha, Suresh B [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: x86_64/i386 fix Intel cache detection code assumption about threads sharing

Fix the Intel cache detection code assumption that number of threads
sharing the cache will either be equal to number of HT or core siblings.

This also cleans up the code in general a bit.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86-64/i386: Intel HT, Multi core detection fixes
Siddha, Suresh B [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86-64/i386: Intel HT, Multi core detection fixes

Fields obtained through cpuid vector 0x1(ebx[16:23]) and
vector 0x4(eax[14:25], eax[26:31]) indicate the maximum values and might not
always be the same as what is available and what OS sees.  So make sure
"siblings" and "cpu cores" values in /proc/cpuinfo reflect the values as seen
by OS instead of what cpuid instruction says. This will also fix the buggy BIOS
cases (for example where cpuid on a single core cpu says there are "2" siblings,
even when HT is disabled in the BIOS.
http://bugzilla.kernel.org/show_bug.cgi?id=4359)

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Fix NUMA node lookup debug code which had bitrotted
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Fix NUMA node lookup debug code which had bitrotted

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Don't enable interrupt unconditionally in reboot path
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Don't enable interrupt unconditionally in reboot path

When they were disabled before (e.g. after a panic) it's better
to keep them off, otherwise followon panics can happen from timer
interrupt handlers etc.

Drawback is that pageup in the console won't work anymore though.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Formatting fixes for arch/x86_64/kernel/process.c
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Formatting fixes for arch/x86_64/kernel/process.c

No functional changes.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Allow modular build of ia32 aout loader
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Allow modular build of ia32 aout loader

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Force correct address space size for MTRR on some 64bit Intel Xeons
Shaohua Li [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Force correct address space size for MTRR on some 64bit Intel Xeons

They report 40bit, but only have 36bits of physical address space.
This caused problems with setting up the correct masks for MTRR.

CPUID workaround for steppings 0F33h(supporting x86) and 0F34h(supporting x86
and EM64T). Detail info can be found at:
http://download.intel.com/design/Xeon/specupdt/30240216.pdf
http://download.intel.com/design/Pentium4/specupdt/30235221.pdf

Signed-off-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] AGP: Make gart iterator in K8 AGP driver SMP safe
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] AGP: Make gart iterator in K8 AGP driver SMP safe

Ugh!

Cc: davej@redhat.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] AGP: Try unsupported AGP chipsets on x86-64 by default
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] AGP: Try unsupported AGP chipsets on x86-64 by default

So far all new ones have worked and there isn't much variation because
the CPU does all the interesting bits.

So enable try unsupported by default.

Can be still disabled with try_unsupported=0 (module) or
amd64.try_unsupported=0   (boot option)

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] AGP: Support ULI/ALI 1689 bridge on AMD64
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] AGP: Support ULI/ALI 1689 bridge on AMD64

(no name because I'm not sure of the correct name)

Cc: davej@redhat.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Optimize NUMA node hash function
Eric Dumazet [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Optimize NUMA node hash function

Compute the highest possible value for memnode_shift, in order to reduce
footprint of memnodemap[] to the minimum, thus making all users
(phys_to_nid(), kfree()), more cache friendly.

Before the patch :

 Node 0 MemBase 0000000000000000 Limit 00000001ffffffff
 Node 1 MemBase 0000000200000000 Limit 00000003ffffffff
 Using 23 for the hash shift. Max adder is 3ffffffff

After the patch :

 Node 0 MemBase 0000000000000000 Limit 00000001ffffffff
 Node 1 MemBase 0000000200000000 Limit 00000003ffffffff
 Using 33 for the hash shift.

In this case, only 2 bytes of memnodemap[] are used, instead of 2048

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Save/restore CS in 64bit signal handlers and force __USER_CS for CS
Bryan Ford [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Save/restore CS in 64bit signal handlers and force __USER_CS for CS

This allows to run 64bit signal handlers in 64bit processes that run small
code snippets in compat mode.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: New heuristics to find out hotpluggable CPUs.
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: New heuristics to find out hotpluggable CPUs.

With a NR_CPUS==128 kernel with CPU hotplug enabled we would waste 4MB
on per CPU data of all possible CPUs.  The reason was that HOTPLUG
always set up possible map to NR_CPUS cpus and then we need to allocate
that much (each per CPU data is roughly ~32k now)

The underlying problem is that ACPI didn't tell us how many hotplug CPUs
the platform supports.  So the old code just assumed all, which would
lead to this memory wastage.

This implements some new heuristics:

 - If the BIOS specified disabled CPUs in the ACPI/mptables assume they
   can be enabled later (this is bending the ACPI specification a bit,
   but seems like a obvious extension)
 - The user can overwrite it with a new additionals_cpus=NUM option
 - Otherwise use half of the available CPUs or 2, whatever is more.

Cc: ashok.raj@intel.com
Cc: len.brown@intel.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Use int operations in spinlocks to support more than 128 CPUs spinning.
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Use int operations in spinlocks to support more than 128 CPUs spinning.

Pointed out by Eric Dumazet

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Some clarifications for Documention/x86_64/mm.txt
Andi Kleen [Sat, 5 Nov 2005 16:25:54 +0000]
[PATCH] x86_64: Some clarifications for Documention/x86_64/mm.txt

I got some questions on this, so just fix up the documentation.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Replace swiotlb extern with include
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Replace swiotlb extern with include

Minor victory on the continuous quest against all stray extern.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Replace cpu_pda extern with include
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Replace cpu_pda extern with include

Minor cleanup - remove obsolete extern

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Only use asm/sections.h to declare section symbols
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Only use asm/sections.h to declare section symbols

Adding __initdata_* to asm-generic/sections.h
Replaces a lot of open coded externs in arch/x86_64/*
I had to change __bss_end to __bss_stop to match the other architectures.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Don't apply __PHYSICAL_MASK to page frame numbers
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Don't apply __PHYSICAL_MASK to page frame numbers

It is for physical addresses, not for PFNs.

Pointed out by Tejun Heo.

Cc: htejun@gmail.com

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Unmap NULL during early bootup
Siddha, Suresh B [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Unmap NULL during early bootup

We should zap the low mappings, as soon as possible, so that we can catch
kernel bugs more effectively. Previously early boot had NULL mapped
and didn't trap on NULL references.

This patch introduces boot_level4_pgt, which will always have low identity
addresses mapped.  Druing boot, all the processors will use this as their
level4 pgt.  On BP, we will switch to init_level4_pgt as soon as we enter C
code and zap the low mappings as soon as we are done with the usage of
identity low mapped addresses.  On AP's we will zap the low mappings as
soon as we jump to C code.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Speed up numa_node_id by putting it directly into the PDA
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Speed up numa_node_id by putting it directly into the PDA

Not go from the CPU number to an mapping array.
Mode number is often used now in fast paths.

This also adds a generic numa_node_id to all the topology includes

Suggested by Eric Dumazet

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Fix gcc 4 warning in aperture.c
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Fix gcc 4 warning in aperture.c

Fix

  arch/x86_64/kernel/aperture.c: In function #iommu_hole_init#:
  arch/x86_64/kernel/aperture.c:199: warning: #aper_order# may be used uninitialized in this function

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86-64/i386: Fix CPU model for family 6
Suresh Siddha [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86-64/i386: Fix CPU model for family 6

According to cpuid instruction in IA32 SDM-Vol2, when computing cpu model,
we need to consider extended model ID for family 0x6 also.

AK: Also added fixes/simplifcation from Petr Vandrovec

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Remove duplicate __cpuinit define
Ashok Raj [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Remove duplicate __cpuinit define

Remove duplicate __cpuinit in smp.c. Already defined in init.h which is
already included.

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Use the DMA32 zone for dma_alloc_coherent()/pci_alloc_consistent
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Use the DMA32 zone for dma_alloc_coherent()/pci_alloc_consistent

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Remove obsolete ARCH_HAS_ATOMIC_UNSIGNED and page_flags_t
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Remove obsolete ARCH_HAS_ATOMIC_UNSIGNED and page_flags_t

Has been introduced for x86-64 at some point to save memory
in struct page, but has been obsolete for some time. Just
remove it.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Fix up outdated pfn_to_page comment
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Fix up outdated pfn_to_page comment

pfn_to_page really requires pfn_valid to be true now, no question.
Some people stumbled over it, but it was misleading and wrong.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] i386/x86-64: Share interrupt vectors when there is a large number of interrup...
James Cleverdon [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] i386/x86-64: Share interrupt vectors when there is a large number of interrupt sources

Here's a patch that builds on Natalie Protasevich's IRQ compression
patch and tries to work for MPS boots as well as ACPI.  It is meant for
a 4-node IBM x460 NUMA box, which was dying because it had interrupt
pins with GSI numbers > NR_IRQS and thus overflowed irq_desc.

The problem is that this system has 270 GSIs (which are 1:1 mapped with
I/O APIC RTEs) and an 8-node box would have 540.  This is much bigger
than NR_IRQS (224 for both i386 and x86_64).  Also, there aren't enough
vectors to go around.  There are about 190 usable vectors, not counting
the reserved ones and the unused vectors at 0x20 to 0x2F.  So, my patch
attempts to compress the GSI range and share vectors by sharing IRQs.

Cc: "Protasevich, Natalie" <Natalie.Protasevich@unisys.com>

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Support for AMD specific MCE Threshold.
Jacob Shin [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Support for AMD specific MCE Threshold.

MC4_MISC - DRAM Errors Threshold Register realized under AMD K8 Rev F.
This register is used to count correctable and uncorrectable ECC errors that occur during DRAM read operations.
The user may interface through sysfs files in order to change the threshold configuration.

bank%d/error_count - reads current error count, write to clear.
bank%d/interrupt_enable - set/clear interrupt enable.
bank%d/threshold_limit - read/write the threshold limit.

APIC vector 0xF9 in hw_irq.h.
5 software defined bank ids in mce.h.
new apic.c function to setup threshold apic lvt.
defaults to interrupt off, count enabled, and threshold limit max.
sysfs interface created on /sys/devices/system/threshold.

AK: added some ifdefs to make it compile on UP

Signed-off-by: Jacob Shin <jacob.shin@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Adjust, correct, and complete the HPET definitions for x86-64.
Jan Beulich [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Adjust, correct, and complete the HPET definitions for x86-64.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Account mem_map in VM holes accounting
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Account mem_map in VM holes accounting

The VM needs to know about lost memory in zones to accurately
balance dirty pages. This patch accounts mem_map in there too,
which fixes a constant errror of a few percent. Also some
other misc mappings and the kernel text itself are accounted
too.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: When cpu_up fails clean up page allocator properly
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: When cpu_up fails clean up page allocator properly

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Make i386 compile again with fourth DMA32 zone
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Make i386 compile again with fourth DMA32 zone

The code should deal with an additional empty zone, so fix up the
#error.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Set compatibility flag for 4GB zone on IA64
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Set compatibility flag for 4GB zone on IA64

IA64 traditionally had a 4GB DMA32 zone. Set the compatibility flag
to keep old drivers working.

For new drivers it would be better to use ZONE_DMA32 now.

Cc: tony.luck@intel.com
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Add 4GB DMA32 zone
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Add 4GB DMA32 zone

Add a new 4GB GFP_DMA32 zone between the GFP_DMA and GFP_NORMAL zones.

As a bit of historical background: when the x86-64 port
was originally designed we had some discussion if we should
use a 16MB DMA zone like i386 or a 4GB DMA zone like IA64 or
both. Both was ruled out at this point because it was in early
2.4 when VM is still quite shakey and had bad troubles even
dealing with one DMA zone.  We settled on the 16MB DMA zone mainly
because we worried about older soundcards and the floppy.

But this has always caused problems since then because
device drivers had trouble getting enough DMA able memory. These days
the VM works much better and the wide use of NUMA has proven
it can deal with many zones successfully.

So this patch adds both zones.

This helps drivers who need a lot of memory below 4GB because
their hardware is not accessing more (graphic drivers - proprietary
and free ones, video frame buffer drivers, sound drivers etc.).
Previously they could only use IOMMU+16MB GFP_DMA, which
was not enough memory.

Another common problem is that hardware who has full memory
addressing for >4GB misses it for some control structures in memory
(like transmit rings or other metadata).  They tended to allocate memory
in the 16MB GFP_DMA or the IOMMU/swiotlb then using pci_alloc_consistent,
but that can tie up a lot of precious 16MB GFPDMA/IOMMU/swiotlb memory
(even on AMD systems the IOMMU tends to be quite small) especially if you have
many devices.  With the new zone pci_alloc_consistent can just put
this stuff into memory below 4GB which works better.

One argument was still if the zone should be 4GB or 2GB. The main
motivation for 2GB would be an unnamed not so unpopular hardware
raid controller (mostly found in older machines from a particular four letter
company) who has a strange 2GB restriction in firmware. But
that one works ok with swiotlb/IOMMU anyways, so it doesn't really
need GFP_DMA32. I chose 4GB to be compatible with IA64 and because
it seems to be the most common restriction.

The new zone is so far added only for x86-64.

For other architectures who don't set up this
new zone nothing changes. Architectures can set a compatibility
define in Kconfig CONFIG_DMA_IS_DMA32 that will define GFP_DMA32
as GFP_DMA. Otherwise it's a nop because on 32bit architectures
it's normally not needed because GFP_NORMAL (=0) is DMA able
enough.

One problem is still that GFP_DMA means different things on different
architectures. e.g. some drivers used to have #ifdef ia64  use GFP_DMA
(trusting it to be 4GB) #elif __x86_64__ (use other hacks like
the swiotlb because 16MB is not enough) ... . This was quite
ugly and is now obsolete.

These should be now converted to use GFP_DMA32 unconditionally. I haven't done
this yet. Or best only use pci_alloc_consistent/dma_alloc_coherent
which will use GFP_DMA32 transparently.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years ago[PATCH] x86_64: Update defconfig
Andi Kleen [Sat, 5 Nov 2005 16:25:53 +0000]
[PATCH] x86_64: Update defconfig

Rerun and enable autofs 4, relayfs and softdog

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge
Linus Torvalds [Tue, 15 Nov 2005 01:56:00 +0000]
Merge git://git./linux/kernel/git/paulus/powerpc-merge

15 years agopowerpc: Remove __init from a function used in suspend/resume.
Paul Mackerras [Mon, 14 Nov 2005 10:56:57 +0000]
powerpc: Remove __init from a function used in suspend/resume.

Suspend/resume on powermacs uses the pmac_get_boot_time function,
so it can't be marked as __init.

Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years agopowerpc: Remove an extraneous and incorrect declaration of pmac_nvram_init.
Paul Mackerras [Mon, 14 Nov 2005 10:55:48 +0000]
powerpc: Remove an extraneous and incorrect declaration of pmac_nvram_init.

Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years agopowerpc: Fix clearing of the FPSCR when invoking a signal handler
Paul Mackerras [Mon, 14 Nov 2005 10:55:15 +0000]
powerpc: Fix clearing of the FPSCR when invoking a signal handler

As pointed out by Gary Byers, we were clearing the image of the FPSCR
(floating point status and control register) in the thread_struct before
copying it to the user stack when invoking a signal.  Thus the task
would see its FPSCR getting cleared when it took a signal.

While fixing it I noticed that our swapcontext system call was also
clearing FPSCR.  It shouldn't, so I fixed that too.

Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years ago[NETFILTER] fix leak of fragment queue at unloading nf_conntrack_ipv6
Yasuyuki Kozakai [Mon, 14 Nov 2005 23:28:45 +0000]
[NETFILTER] fix leak of fragment queue at unloading nf_conntrack_ipv6

This patch makes nf_conntrack_ipv6 free all IPv6 fragment queues at module
unloading time.  Also introduce a BUG_ON if we ever again have leaks in
the memory accounting.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] nf_conntrack: fix possibility of infinite loop while evicting nf_ct_frag6...
Yasuyuki Kozakai [Mon, 14 Nov 2005 23:28:18 +0000]
[NETFILTER] nf_conntrack: fix possibility of infinite loop while evicting nf_ct_frag6_queue

This synchronizes nf_ct_reasm with ipv6 reassembly, and fixes a possibility
of an infinite loop if CPUs evict and create nf_ct_frag6_queue in parallel.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER]: fix type of sysctl variables in nf_conntrack_ipv6
Yasuyuki Kozakai [Mon, 14 Nov 2005 23:27:43 +0000]
[NETFILTER]: fix type of sysctl variables in nf_conntrack_ipv6

These variables should be unsigned.  This fixes sysctl handler for
nf_ct_frag6_{low,high}_thresh.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER]: cleanup IPv6 Netfilter Kconfig
Yasuyuki Kozakai [Mon, 14 Nov 2005 23:26:58 +0000]
[NETFILTER]: cleanup IPv6 Netfilter Kconfig

This removes linux 2.4 configs in comments as TODO lists.
And this also move the entry of nf_conntrack to top like IPv4 Netfilter
Kconfig.

Based on original patch by Krzysztof Piotr Oledzki <ole@ans.pl>.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER]: link 'netfilter' before ipv4
Krzysztof Oledzki [Mon, 14 Nov 2005 23:25:59 +0000]
[NETFILTER]: link 'netfilter' before ipv4

Staticaly linked nf_conntrack_ipv4 requires nf_conntrack. but currently
nf_conntrack is linked after it. This changes the order of ipv4 and netfilter
to fix this.

Signed-off-by: Krzysztof Oledzki <olenf@ans.pl>
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] nfnetlink: unconditionally require CAP_NET_ADMIN
Harald Welte [Mon, 14 Nov 2005 23:24:59 +0000]
[NETFILTER] nfnetlink: unconditionally require CAP_NET_ADMIN

This patch unconditionally requires CAP_NET_ADMIN for all nfnetlink
messages.  It also removes the per-message cap_required field, since all
existing subsystems use CAP_NET_ADMIN for all their messages anyway.

Patrick McHardy owes me a beer if we ever need to re-introduce this.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] nf_conntrack: Add missing code to TCP conntrack module
KOVACS Krisztian [Mon, 14 Nov 2005 23:23:01 +0000]
[NETFILTER] nf_conntrack: Add missing code to TCP conntrack module

Looks like the nf_conntrack TCP code was slightly mismerged: it does
not contain an else branch present in the IPv4 version. Let's add that
code and make the testsuite happy.

Signed-off-by: KOVACS Krisztian <hidden@balabit.hu>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] ctnetlink: More thorough size checking of attributes
Pablo Neira Ayuso [Mon, 14 Nov 2005 23:22:11 +0000]
[NETFILTER] ctnetlink: More thorough size checking of attributes

Add missing size checks. Thanks Patrick McHardy for the hint.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] nfnetlink: skip size check if size not specified (== 0)
Pablo Neira Ayuso [Mon, 14 Nov 2005 23:21:41 +0000]
[NETFILTER] nfnetlink: skip size check if size not specified (== 0)

Skip sizecheck if the size of the attribute wasn't specified, ie. zero.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[NETFILTER] ctnetlink: use size_t to make gcc-4.x happy
Pablo Neira Ayuso [Mon, 14 Nov 2005 23:21:01 +0000]
[NETFILTER] ctnetlink: use size_t to make gcc-4.x happy

Make gcc-4.x happy. Use size_t instead of int. Thanks to Patrick McHardy
for the hint.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

15 years ago[libata] REQUEST SENSE handling fixes
Jeff Garzik [Mon, 14 Nov 2005 19:50:05 +0000]
[libata] REQUEST SENSE handling fixes

- Move ATAPI check-condition handling out of the timeout handler
- Use multi-qc-issue feature to issue REQUEST SENSE ATAPI PACKET
  command upon receiving an ATAPI check-condition.

This cleans things up a lot, and eliminates a nasty recursion bug.

15 years ago[libata] minor fixes, new helpers
Jeff Garzik [Mon, 14 Nov 2005 19:14:16 +0000]
[libata] minor fixes, new helpers

- in ata_dev_identify(), don't assume that all devices are either
  ATA or ATAPI.  In the future, this code will see port multipliers
  and other devices.
- make a debugging printk less verbose
- add new helper ata_qc_reinit()
- add new helper BPRINTK() and port flag ATA_FLAG_DEBUGMSG, for
  fine-grained debugging use.

15 years ago[libata] fix bugs in ATAPI padding DMA mapping code
Jeff Garzik [Mon, 14 Nov 2005 19:06:26 +0000]
[libata] fix bugs in ATAPI padding DMA mapping code

The ATAPI pad-to-next-32bit-boundary code modifies the scatterlist's
length variable, sometimes to zero.  x86-64 platform would oops if a
zero-length scatterlist entry was asked to be mapped.  Work around this
by ensuring that we never DMA-map a zero length buffer or SG entry.

15 years ago[libata ahci] error handling fixes
Jeff Garzik [Mon, 14 Nov 2005 18:56:37 +0000]
[libata ahci] error handling fixes

Needed to get ATAPI working.

- dump hardware error bits, if hardware signals an error
- only reset hardware during timeout if a command was active
- call ata_qc_complete() with a fine-grained error mask.
  Needed so that atapi_qc_complete() can distinguish between
  device errors and other errors.

15 years agopowerpc: Fix 32-bit compile: PPC_MEMSTART was undeclared
Paul Mackerras [Mon, 14 Nov 2005 06:32:50 +0000]
powerpc: Fix 32-bit compile: PPC_MEMSTART was undeclared

This defines PPC_MEMSTART as 0 because it is still used in a couple
of places in the 32-bit code.

Signed-off-by: Paul Mackerras <paulus@samba.org>

15 years agopowerpc: Mark PREP and embedded as broken for now
Paul Mackerras [Mon, 14 Nov 2005 06:31:55 +0000]
powerpc: Mark PREP and embedded as broken for now

These machines don't have working ARCH=powerpc support yet, so make
them depend on BROKEN so people don't enable them inadvertently and
get compile errors.

Signed-off-by: Paul Mackerras <paulus@samba.org>