Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Thu, 11 Feb 2010 22:01:46 +0000 (14:01 -0800)]
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Don't probe reserved EntryHi bits.
  MIPS: SNI: Correct NULL test
  MIPS: Fix __devinit __cpuinit confusion in cpu_cache_init
  MIPS: IP27: Make defconfig useful again.
  MIPS: Fixup of the r4k timer

21 files changed:
MAINTAINERS
arch/sparc/kernel/process_32.c
arch/sparc/kernel/process_64.c
arch/sparc/kernel/signal32.c
arch/sparc/kernel/signal_32.c
arch/sparc/kernel/signal_64.c
arch/x86/include/asm/system.h
arch/x86/kernel/acpi/boot.c
arch/x86/kernel/apic/apic.c
arch/x86/kernel/apic/probe_32.c
arch/x86/kernel/apic/probe_64.c
arch/x86/kernel/mpparse.c
arch/x86/kernel/smpboot.c
arch/x86/mm/gup.c
drivers/char/agp/amd64-agp.c
drivers/char/tpm/tpm_infineon.c
drivers/edac/mpc85xx_edac.c
drivers/infiniband/core/cma.c
drivers/mmc/card/mmc_test.c
fs/compat_ioctl.c
fs/exec.c

index 602022d..412eff6 100644 (file)
@@ -3411,8 +3411,10 @@ S:       Maintained
 F:     drivers/scsi/sym53c8xx_2/
 
 LTP (Linux Test Project)
-M:     Subrata Modak <subrata@linux.vnet.ibm.com>
-M:     Mike Frysinger <vapier@gentoo.org>
+M:     Rishikesh K Rajak <risrajak@linux.vnet.ibm.com>
+M:     Garrett Cooper <yanegomi@gmail.com>
+M:     Mike Frysinger <vapier@gentoo.org>
+M:     Subrata Modak <subrata@linux.vnet.ibm.com>
 L:     ltp-list@lists.sourceforge.net (subscribers-only)
 W:     http://ltp.sourceforge.net/
 T:     git git://git.kernel.org/pub/scm/linux/kernel/git/galak/ltp.git
index 2830b41..c49865b 100644 (file)
@@ -526,7 +526,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
                         * Set some valid stack frames to give to the child.
                         */
                        childstack = (struct sparc_stackf __user *)
-                               (sp & ~0x7UL);
+                               (sp & ~0xfUL);
                        parentstack = (struct sparc_stackf __user *)
                                regs->u_regs[UREG_FP];
 
index c3f1cce..cb70476 100644 (file)
@@ -398,11 +398,11 @@ static unsigned long clone_stackframe(unsigned long csp, unsigned long psp)
        } else
                __get_user(fp, &(((struct reg_window32 __user *)psp)->ins[6]));
 
-       /* Now 8-byte align the stack as this is mandatory in the
-        * Sparc ABI due to how register windows work.  This hides
-        * the restriction from thread libraries etc.  -DaveM
+       /* Now align the stack as this is mandatory in the Sparc ABI
+        * due to how register windows work.  This hides the
+        * restriction from thread libraries etc.
         */
-       csp &= ~7UL;
+       csp &= ~15UL;
 
        distance = fp - psp;
        rval = (csp - distance);
index ba5b09a..ea22cd3 100644 (file)
@@ -120,8 +120,8 @@ struct rt_signal_frame32 {
 };
 
 /* Align macros */
-#define SF_ALIGNEDSZ  (((sizeof(struct signal_frame32) + 7) & (~7)))
-#define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame32) + 7) & (~7)))
+#define SF_ALIGNEDSZ  (((sizeof(struct signal_frame32) + 15) & (~15)))
+#define RT_ALIGNEDSZ  (((sizeof(struct rt_signal_frame32) + 15) & (~15)))
 
 int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from)
 {
@@ -420,15 +420,17 @@ static void __user *get_sigframe(struct sigaction *sa, struct pt_regs *regs, uns
                        sp = current->sas_ss_sp + current->sas_ss_size;
        }
 
+       sp -= framesize;
+
        /* Always align the stack frame.  This handles two cases.  First,
         * sigaltstack need not be mindful of platform specific stack
         * alignment.  Second, if we took this signal because the stack
         * is not aligned properly, we'd like to take the signal cleanly
         * and report that.
         */
-       sp &= ~7UL;
+       sp &= ~15UL;
 
-       return (void __user *)(sp - framesize);
+       return (void __user *) sp;
 }
 
 static int save_fpu_state32(struct pt_regs *regs, __siginfo_fpu_t __user *fpu)
index 7ce1a10..9882df9 100644 (file)
@@ -267,15 +267,17 @@ static inline void __user *get_sigframe(struct sigaction *sa, struct pt_regs *re
                        sp = current->sas_ss_sp + current->sas_ss_size;
        }
 
+       sp -= framesize;
+
        /* Always align the stack frame.  This handles two cases.  First,
         * sigaltstack need not be mindful of platform specific stack
         * alignment.  Second, if we took this signal because the stack
         * is not aligned properly, we'd like to take the signal cleanly
         * and report that.
         */
-       sp &= ~7UL;
+       sp &= ~15UL;
 
-       return (void __user *)(sp - framesize);
+       return (void __user *) sp;
 }
 
 static inline int
index 647afbd..9fa48c3 100644 (file)
@@ -353,7 +353,7 @@ segv:
 /* Checks if the fp is valid */
 static int invalid_frame_pointer(void __user *fp, int fplen)
 {
-       if (((unsigned long) fp) & 7)
+       if (((unsigned long) fp) & 15)
                return 1;
        return 0;
 }
@@ -396,15 +396,17 @@ static inline void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *
                        sp = current->sas_ss_sp + current->sas_ss_size;
        }
 
+       sp -= framesize;
+
        /* Always align the stack frame.  This handles two cases.  First,
         * sigaltstack need not be mindful of platform specific stack
         * alignment.  Second, if we took this signal because the stack
         * is not aligned properly, we'd like to take the signal cleanly
         * and report that.
         */
-       sp &= ~7UL;
+       sp &= ~15UL;
 
-       return (void __user *)(sp - framesize);
+       return (void __user *) sp;
 }
 
 static inline void
index ecb544e..e04740f 100644 (file)
@@ -11,9 +11,9 @@
 #include <linux/irqflags.h>
 
 /* entries in ARCH_DLINFO: */
-#ifdef CONFIG_IA32_EMULATION
+#if defined(CONFIG_IA32_EMULATION) || !defined(CONFIG_X86_64)
 # define AT_VECTOR_SIZE_ARCH 2
-#else
+#else /* else it's non-compat x86-64 */
 # define AT_VECTOR_SIZE_ARCH 1
 #endif
 
index 036d28a..0acbcdf 100644 (file)
@@ -1185,9 +1185,6 @@ static void __init acpi_process_madt(void)
                if (!error) {
                        acpi_lapic = 1;
 
-#ifdef CONFIG_X86_BIGSMP
-                       generic_bigsmp_probe();
-#endif
                        /*
                         * Parse MADT IO-APIC entries
                         */
@@ -1197,8 +1194,6 @@ static void __init acpi_process_madt(void)
                                acpi_ioapic = 1;
 
                                smp_found_config = 1;
-                               if (apic->setup_apic_routing)
-                                       apic->setup_apic_routing();
                        }
                }
                if (error == -EINVAL) {
index 3987e44..dfca210 100644 (file)
@@ -1641,9 +1641,7 @@ int __init APIC_init_uniprocessor(void)
 #endif
 
        enable_IR_x2apic();
-#ifdef CONFIG_X86_64
        default_setup_apic_routing();
-#endif
 
        verify_local_APIC();
        connect_bsp_APIC();
@@ -1891,21 +1889,6 @@ void __cpuinit generic_processor_info(int apicid, int version)
        if (apicid > max_physical_apicid)
                max_physical_apicid = apicid;
 
-#ifdef CONFIG_X86_32
-       if (num_processors > 8) {
-               switch (boot_cpu_data.x86_vendor) {
-               case X86_VENDOR_INTEL:
-                       if (!APIC_XAPIC(version)) {
-                               def_to_bigsmp = 0;
-                               break;
-                       }
-                       /* If P4 and above fall through */
-               case X86_VENDOR_AMD:
-                       def_to_bigsmp = 1;
-               }
-       }
-#endif
-
 #if defined(CONFIG_SMP) || defined(CONFIG_X86_64)
        early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
        early_per_cpu(x86_bios_cpu_apicid, cpu) = apicid;
index 1a6559f..99d2fe0 100644 (file)
@@ -52,7 +52,32 @@ static int __init print_ipi_mode(void)
 }
 late_initcall(print_ipi_mode);
 
-void default_setup_apic_routing(void)
+void __init default_setup_apic_routing(void)
+{
+       int version = apic_version[boot_cpu_physical_apicid];
+
+       if (num_possible_cpus() > 8) {
+               switch (boot_cpu_data.x86_vendor) {
+               case X86_VENDOR_INTEL:
+                       if (!APIC_XAPIC(version)) {
+                               def_to_bigsmp = 0;
+                               break;
+                       }
+                       /* If P4 and above fall through */
+               case X86_VENDOR_AMD:
+                       def_to_bigsmp = 1;
+               }
+       }
+
+#ifdef CONFIG_X86_BIGSMP
+       generic_bigsmp_probe();
+#endif
+
+       if (apic->setup_apic_routing)
+               apic->setup_apic_routing();
+}
+
+static void setup_apic_flat_routing(void)
 {
 #ifdef CONFIG_X86_IO_APIC
        printk(KERN_INFO
@@ -103,7 +128,7 @@ struct apic apic_default = {
        .init_apic_ldr                  = default_init_apic_ldr,
 
        .ioapic_phys_id_map             = default_ioapic_phys_id_map,
-       .setup_apic_routing             = default_setup_apic_routing,
+       .setup_apic_routing             = setup_apic_flat_routing,
        .multi_timer_check              = NULL,
        .apicid_to_node                 = default_apicid_to_node,
        .cpu_to_logical_apicid          = default_cpu_to_logical_apicid,
index 450fe20..83e9be4 100644 (file)
@@ -67,7 +67,7 @@ void __init default_setup_apic_routing(void)
        }
 #endif
 
-       if (apic == &apic_flat && num_processors > 8)
+       if (apic == &apic_flat && num_possible_cpus() > 8)
                        apic = &apic_physflat;
 
        printk(KERN_INFO "Setting APIC routing to %s\n", apic->name);
index 40b54ce..a2c1edd 100644 (file)
@@ -359,13 +359,6 @@ static int __init smp_read_mpc(struct mpc_table *mpc, unsigned early)
                x86_init.mpparse.mpc_record(1);
        }
 
-#ifdef CONFIG_X86_BIGSMP
-       generic_bigsmp_probe();
-#endif
-
-       if (apic->setup_apic_routing)
-               apic->setup_apic_routing();
-
        if (!num_processors)
                printk(KERN_ERR "MPTABLE: no processors registered!\n");
        return num_processors;
index 678d0b8..b4e870c 100644 (file)
@@ -1083,9 +1083,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
        set_cpu_sibling_map(0);
 
        enable_IR_x2apic();
-#ifdef CONFIG_X86_64
        default_setup_apic_routing();
-#endif
 
        if (smp_sanity_check(max_cpus) < 0) {
                printk(KERN_INFO "SMP disabled\n");
index 71da1bc..738e659 100644 (file)
@@ -18,7 +18,7 @@ static inline pte_t gup_get_pte(pte_t *ptep)
 #else
        /*
         * With get_user_pages_fast, we walk down the pagetables without taking
-        * any locks.  For this we would like to load the pointers atoimcally,
+        * any locks.  For this we would like to load the pointers atomically,
         * but that is not possible (without expensive cmpxchg8b) on PAE.  What
         * we do have is the guarantee that a pte will only either go from not
         * present to present, or present to not present or both -- it will not
index 34cf04e..fd50ead 100644 (file)
@@ -767,16 +767,19 @@ int __init agp_amd64_init(void)
 
 static int __init agp_amd64_mod_init(void)
 {
+#ifndef MODULE
        if (gart_iommu_aperture)
                return agp_bridges_found ? 0 : -ENODEV;
-
+#endif
        return agp_amd64_init();
 }
 
 static void __exit agp_amd64_cleanup(void)
 {
+#ifndef MODULE
        if (gart_iommu_aperture)
                return;
+#endif
        if (aperture_resource)
                release_resource(aperture_resource);
        pci_unregister_driver(&agp_amd64_pci_driver);
index ecba494..f584407 100644 (file)
 struct tpm_inf_dev {
        int iotype;
 
-       void __iomem *mem_base;         /* MMIO ioremap'd addr */
-       unsigned long map_base;         /* phys MMIO base */
-       unsigned long map_size;         /* MMIO region size */
-       unsigned int index_off;         /* index register offset */
+       void __iomem *mem_base; /* MMIO ioremap'd addr */
+       unsigned long map_base; /* phys MMIO base */
+       unsigned long map_size; /* MMIO region size */
+       unsigned int index_off; /* index register offset */
 
-       unsigned int data_regs;         /* Data registers */
+       unsigned int data_regs; /* Data registers */
        unsigned int data_size;
 
        unsigned int config_port;       /* IO Port config index reg */
@@ -406,14 +406,14 @@ static const struct tpm_vendor_specific tpm_inf = {
        .miscdev = {.fops = &inf_ops,},
 };
 
-static const struct pnp_device_id tpm_pnp_tbl[] = {
+static const struct pnp_device_id tpm_inf_pnp_tbl[] = {
        /* Infineon TPMs */
        {"IFX0101", 0},
        {"IFX0102", 0},
        {"", 0}
 };
 
-MODULE_DEVICE_TABLE(pnp, tpm_pnp_tbl);
+MODULE_DEVICE_TABLE(pnp, tpm_inf_pnp_tbl);
 
 static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                                       const struct pnp_device_id *dev_id)
@@ -430,7 +430,7 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
        if (pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) &&
            !(pnp_port_flags(dev, 0) & IORESOURCE_DISABLED)) {
 
-               tpm_dev.iotype = TPM_INF_IO_PORT;
+               tpm_dev.iotype = TPM_INF_IO_PORT;
 
                tpm_dev.config_port = pnp_port_start(dev, 0);
                tpm_dev.config_size = pnp_port_len(dev, 0);
@@ -459,9 +459,9 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                        goto err_last;
                }
        } else if (pnp_mem_valid(dev, 0) &&
-                  !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
+                  !(pnp_mem_flags(dev, 0) & IORESOURCE_DISABLED)) {
 
-               tpm_dev.iotype = TPM_INF_IO_MEM;
+               tpm_dev.iotype = TPM_INF_IO_MEM;
 
                tpm_dev.map_base = pnp_mem_start(dev, 0);
                tpm_dev.map_size = pnp_mem_len(dev, 0);
@@ -563,11 +563,11 @@ static int __devinit tpm_inf_pnp_probe(struct pnp_dev *dev,
                         "product id 0x%02x%02x"
                         "%s\n",
                         tpm_dev.iotype == TPM_INF_IO_PORT ?
-                               tpm_dev.config_port :
-                               tpm_dev.map_base + tpm_dev.index_off,
+                        tpm_dev.config_port :
+                        tpm_dev.map_base + tpm_dev.index_off,
                         tpm_dev.iotype == TPM_INF_IO_PORT ?
-                               tpm_dev.data_regs :
-                               tpm_dev.map_base + tpm_dev.data_regs,
+                        tpm_dev.data_regs :
+                        tpm_dev.map_base + tpm_dev.data_regs,
                         version[0], version[1],
                         vendorid[0], vendorid[1],
                         productid[0], productid[1], chipname);
@@ -607,20 +607,55 @@ static __devexit void tpm_inf_pnp_remove(struct pnp_dev *dev)
                        iounmap(tpm_dev.mem_base);
                        release_mem_region(tpm_dev.map_base, tpm_dev.map_size);
                }
+               tpm_dev_vendor_release(chip);
                tpm_remove_hardware(chip->dev);
        }
 }
 
+static int tpm_inf_pnp_suspend(struct pnp_dev *dev, pm_message_t pm_state)
+{
+       struct tpm_chip *chip = pnp_get_drvdata(dev);
+       int rc;
+       if (chip) {
+               u8 savestate[] = {
+                       0, 193, /* TPM_TAG_RQU_COMMAND */
+                       0, 0, 0, 10,    /* blob length (in bytes) */
+                       0, 0, 0, 152    /* TPM_ORD_SaveState */
+               };
+               dev_info(&dev->dev, "saving TPM state\n");
+               rc = tpm_inf_send(chip, savestate, sizeof(savestate));
+               if (rc < 0) {
+                       dev_err(&dev->dev, "error while saving TPM state\n");
+                       return rc;
+               }
+       }
+       return 0;
+}
+
+static int tpm_inf_pnp_resume(struct pnp_dev *dev)
+{
+       /* Re-configure TPM after suspending */
+       tpm_config_out(ENABLE_REGISTER_PAIR, TPM_INF_ADDR);
+       tpm_config_out(IOLIMH, TPM_INF_ADDR);
+       tpm_config_out((tpm_dev.data_regs >> 8) & 0xff, TPM_INF_DATA);
+       tpm_config_out(IOLIML, TPM_INF_ADDR);
+       tpm_config_out((tpm_dev.data_regs & 0xff), TPM_INF_DATA);
+       /* activate register */
+       tpm_config_out(TPM_DAR, TPM_INF_ADDR);
+       tpm_config_out(0x01, TPM_INF_DATA);
+       tpm_config_out(DISABLE_REGISTER_PAIR, TPM_INF_ADDR);
+       /* disable RESET, LP and IRQC */
+       tpm_data_out(RESET_LP_IRQC_DISABLE, CMD);
+       return tpm_pm_resume(&dev->dev);
+}
+
 static struct pnp_driver tpm_inf_pnp_driver = {
        .name = "tpm_inf_pnp",
-       .driver = {
-               .owner = THIS_MODULE,
-               .suspend = tpm_pm_suspend,
-               .resume = tpm_pm_resume,
-       },
-       .id_table = tpm_pnp_tbl,
+       .id_table = tpm_inf_pnp_tbl,
        .probe = tpm_inf_pnp_probe,
-       .remove = __devexit_p(tpm_inf_pnp_remove),
+       .suspend = tpm_inf_pnp_suspend,
+       .resume = tpm_inf_pnp_resume,
+       .remove = __devexit_p(tpm_inf_pnp_remove)
 };
 
 static int __init init_inf(void)
@@ -638,5 +673,5 @@ module_exit(cleanup_inf);
 
 MODULE_AUTHOR("Marcel Selhorst <m.selhorst@sirrix.com>");
 MODULE_DESCRIPTION("Driver for Infineon TPM SLD 9630 TT 1.1 / SLB 9635 TT 1.2");
-MODULE_VERSION("1.9");
+MODULE_VERSION("1.9.2");
 MODULE_LICENSE("GPL");
index cf27402..ecd5928 100644 (file)
@@ -804,8 +804,8 @@ static void __devinit mpc85xx_init_csrows(struct mem_ctl_info *mci)
                end   <<= (24 - PAGE_SHIFT);
                end    |= (1 << (24 - PAGE_SHIFT)) - 1;
 
-               csrow->first_page = start >> PAGE_SHIFT;
-               csrow->last_page = end >> PAGE_SHIFT;
+               csrow->first_page = start;
+               csrow->last_page = end;
                csrow->nr_pages = end + 1 - start;
                csrow->grain = 8;
                csrow->mtype = mtype;
@@ -892,10 +892,6 @@ static int __devinit mpc85xx_mc_err_probe(struct of_device *op,
 
        mpc85xx_init_csrows(mci);
 
-#ifdef CONFIG_EDAC_DEBUG
-       edac_mc_register_mcidev_debug((struct attribute **)debug_attr);
-#endif
-
        /* store the original error disable bits */
        orig_ddr_err_disable =
            in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE);
index cc9b594..875e34e 100644 (file)
@@ -2115,9 +2115,7 @@ int rdma_bind_addr(struct rdma_cm_id *id, struct sockaddr *addr)
        if (ret)
                goto err1;
 
-       if (cma_loopback_addr(addr)) {
-               ret = cma_bind_loopback(id_priv);
-       } else if (!cma_zero_addr(addr)) {
+       if (!cma_any_addr(addr)) {
                ret = rdma_translate_ip(addr, &id->route.addr.dev_addr);
                if (ret)
                        goto err1;
index b9f1e84..e7f8027 100644 (file)
@@ -74,6 +74,9 @@ static void mmc_test_prepare_mrq(struct mmc_test_card *test,
        }
 
        mrq->cmd->arg = dev_addr;
+       if (!mmc_card_blockaddr(test->card))
+               mrq->cmd->arg <<= 9;
+
        mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 
        if (blocks == 1)
@@ -190,7 +193,7 @@ static int __mmc_test_prepare(struct mmc_test_card *test, int write)
        }
 
        for (i = 0;i < BUFFER_SIZE / 512;i++) {
-               ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
+               ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
                if (ret)
                        return ret;
        }
@@ -219,7 +222,7 @@ static int mmc_test_cleanup(struct mmc_test_card *test)
        memset(test->buffer, 0, 512);
 
        for (i = 0;i < BUFFER_SIZE / 512;i++) {
-               ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1);
+               ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1);
                if (ret)
                        return ret;
        }
@@ -426,7 +429,7 @@ static int mmc_test_transfer(struct mmc_test_card *test,
                for (i = 0;i < sectors;i++) {
                        ret = mmc_test_buffer_transfer(test,
                                test->buffer + i * 512,
-                               dev_addr + i * 512, 512, 0);
+                               dev_addr + i, 512, 0);
                        if (ret)
                                return ret;
                }
index c5c45de..30698a1 100644 (file)
@@ -936,6 +936,7 @@ COMPATIBLE_IOCTL(TCSETSF)
 COMPATIBLE_IOCTL(TIOCLINUX)
 COMPATIBLE_IOCTL(TIOCSBRK)
 COMPATIBLE_IOCTL(TIOCCBRK)
+COMPATIBLE_IOCTL(TIOCGSID)
 COMPATIBLE_IOCTL(TIOCGICOUNT)
 /* Little t */
 COMPATIBLE_IOCTL(TIOCGETD)
@@ -1038,6 +1039,8 @@ COMPATIBLE_IOCTL(FIOQSIZE)
 #ifdef CONFIG_BLOCK
 /* loop */
 IGNORE_IOCTL(LOOP_CLR_FD)
+/* md calls this on random blockdevs */
+IGNORE_IOCTL(RAID_VERSION)
 /* SG stuff */
 COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
 COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
index 0790a10..e95c692 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -571,6 +571,9 @@ int setup_arg_pages(struct linux_binprm *bprm,
        struct vm_area_struct *prev = NULL;
        unsigned long vm_flags;
        unsigned long stack_base;
+       unsigned long stack_size;
+       unsigned long stack_expand;
+       unsigned long rlim_stack;
 
 #ifdef CONFIG_STACK_GROWSUP
        /* Limit stack size to 1GB */
@@ -627,10 +630,24 @@ int setup_arg_pages(struct linux_binprm *bprm,
                        goto out_unlock;
        }
 
+       stack_expand = EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+       stack_size = vma->vm_end - vma->vm_start;
+       /*
+        * Align this down to a page boundary as expand_stack
+        * will align it up.
+        */
+       rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK;
+       rlim_stack = min(rlim_stack, stack_size);
 #ifdef CONFIG_STACK_GROWSUP
-       stack_base = vma->vm_end + EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+       if (stack_size + stack_expand > rlim_stack)
+               stack_base = vma->vm_start + rlim_stack;
+       else
+               stack_base = vma->vm_end + stack_expand;
 #else
-       stack_base = vma->vm_start - EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+       if (stack_size + stack_expand > rlim_stack)
+               stack_base = vma->vm_end - rlim_stack;
+       else
+               stack_base = vma->vm_start - stack_expand;
 #endif
        ret = expand_stack(vma, stack_base);
        if (ret)