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-rw-r--r--arch/i386/kernel/alternative.c6
-rw-r--r--arch/i386/kernel/cpu/perfctr-watchdog.c28
-rw-r--r--arch/i386/kernel/nmi.c2
-rw-r--r--arch/i386/kernel/ptrace.c1
-rw-r--r--arch/ia64/kernel/ptrace.c1
-rw-r--r--arch/m68k/kernel/ptrace.c1
-rw-r--r--fs/nfsd/nfsfh.c20
-rw-r--r--fs/nfsd/vfs.c3
-rw-r--r--include/asm-um/elf-x86_64.h42
-rw-r--r--kernel/ptrace.c1
10 files changed, 64 insertions, 41 deletions
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c
index 9f4ac8b02de..bd72d94e713 100644
--- a/arch/i386/kernel/alternative.c
+++ b/arch/i386/kernel/alternative.c
@@ -445,8 +445,6 @@ void __kprobes text_poke(void *addr, unsigned char *opcode, int len)
{
memcpy(addr, opcode, len);
sync_core();
- /* Not strictly needed, but can speed CPU recovery up. Ignore cross cacheline
- case. */
- if (cpu_has_clflush)
- asm("clflush (%0) " :: "r" (addr) : "memory");
+ /* Could also do a CLFLUSH here to speed up CPU recovery; but
+ that causes hangs on some VIA CPUs. */
}
diff --git a/arch/i386/kernel/cpu/perfctr-watchdog.c b/arch/i386/kernel/cpu/perfctr-watchdog.c
index 4be488e73be..93fecd4b03d 100644
--- a/arch/i386/kernel/cpu/perfctr-watchdog.c
+++ b/arch/i386/kernel/cpu/perfctr-watchdog.c
@@ -263,8 +263,8 @@ static int setup_k7_watchdog(unsigned nmi_hz)
unsigned int evntsel;
struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk);
- perfctr_msr = MSR_K7_PERFCTR0;
- evntsel_msr = MSR_K7_EVNTSEL0;
+ perfctr_msr = wd_ops->perfctr;
+ evntsel_msr = wd_ops->evntsel;
wrmsrl(perfctr_msr, 0UL);
@@ -343,8 +343,8 @@ static int setup_p6_watchdog(unsigned nmi_hz)
unsigned int evntsel;
struct nmi_watchdog_ctlblk *wd = &__get_cpu_var(nmi_watchdog_ctlblk);
- perfctr_msr = MSR_P6_PERFCTR0;
- evntsel_msr = MSR_P6_EVNTSEL0;
+ perfctr_msr = wd_ops->perfctr;
+ evntsel_msr = wd_ops->evntsel;
/* KVM doesn't implement this MSR */
if (wrmsr_safe(perfctr_msr, 0, 0) < 0)
@@ -569,8 +569,8 @@ static int setup_intel_arch_watchdog(unsigned nmi_hz)
(ebx & ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT))
return 0;
- perfctr_msr = MSR_ARCH_PERFMON_PERFCTR1;
- evntsel_msr = MSR_ARCH_PERFMON_EVENTSEL1;
+ perfctr_msr = wd_ops->perfctr;
+ evntsel_msr = wd_ops->evntsel;
wrmsrl(perfctr_msr, 0UL);
@@ -605,6 +605,16 @@ static struct wd_ops intel_arch_wd_ops = {
.evntsel = MSR_ARCH_PERFMON_EVENTSEL1,
};
+static struct wd_ops coreduo_wd_ops = {
+ .reserve = single_msr_reserve,
+ .unreserve = single_msr_unreserve,
+ .setup = setup_intel_arch_watchdog,
+ .rearm = p6_rearm,
+ .stop = single_msr_stop_watchdog,
+ .perfctr = MSR_ARCH_PERFMON_PERFCTR0,
+ .evntsel = MSR_ARCH_PERFMON_EVENTSEL0,
+};
+
static void probe_nmi_watchdog(void)
{
switch (boot_cpu_data.x86_vendor) {
@@ -615,6 +625,12 @@ static void probe_nmi_watchdog(void)
wd_ops = &k7_wd_ops;
break;
case X86_VENDOR_INTEL:
+ /* Work around Core Duo (Yonah) errata AE49 where perfctr1
+ doesn't have a working enable bit. */
+ if (boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model == 14) {
+ wd_ops = &coreduo_wd_ops;
+ break;
+ }
if (cpu_has(&boot_cpu_data, X86_FEATURE_ARCH_PERFMON)) {
wd_ops = &intel_arch_wd_ops;
break;
diff --git a/arch/i386/kernel/nmi.c b/arch/i386/kernel/nmi.c
index 8c1c965eb2a..c7227e2180f 100644
--- a/arch/i386/kernel/nmi.c
+++ b/arch/i386/kernel/nmi.c
@@ -115,12 +115,12 @@ static int __init check_nmi_watchdog(void)
atomic_dec(&nmi_active);
}
}
+ endflag = 1;
if (!atomic_read(&nmi_active)) {
kfree(prev_nmi_count);
atomic_set(&nmi_active, -1);
return -1;
}
- endflag = 1;
printk("OK.\n");
/* now that we know it works we can reduce NMI frequency to
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index 0c8f00e69c4..7c1b92522e9 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -274,7 +274,6 @@ static void clear_singlestep(struct task_struct *child)
void ptrace_disable(struct task_struct *child)
{
clear_singlestep(child);
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
clear_tsk_thread_flag(child, TIF_SYSCALL_EMU);
}
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 122444a9789..2e96f17b2f3 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1577,7 +1577,6 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
case PTRACE_DETACH:
/* detach a process that was attached. */
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
ret = ptrace_detach(child, data);
goto out_tsk;
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 2cf0690b788..e792d3cba4c 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -116,7 +116,6 @@ static inline void singlestep_disable(struct task_struct *child)
void ptrace_disable(struct task_struct *child)
{
singlestep_disable(child);
- clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
}
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 0eb464a39aa..7011d62acfc 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -566,13 +566,23 @@ enum fsid_source fsid_source(struct svc_fh *fhp)
case FSID_DEV:
case FSID_ENCODE_DEV:
case FSID_MAJOR_MINOR:
- return FSIDSOURCE_DEV;
+ if (fhp->fh_export->ex_dentry->d_inode->i_sb->s_type->fs_flags
+ & FS_REQUIRES_DEV)
+ return FSIDSOURCE_DEV;
+ break;
case FSID_NUM:
- return FSIDSOURCE_FSID;
- default:
if (fhp->fh_export->ex_flags & NFSEXP_FSID)
return FSIDSOURCE_FSID;
- else
- return FSIDSOURCE_UUID;
+ break;
+ default:
+ break;
}
+ /* either a UUID type filehandle, or the filehandle doesn't
+ * match the export.
+ */
+ if (fhp->fh_export->ex_flags & NFSEXP_FSID)
+ return FSIDSOURCE_FSID;
+ if (fhp->fh_export->ex_uuid)
+ return FSIDSOURCE_UUID;
+ return FSIDSOURCE_DEV;
}
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index a0c2b253818..7867151ebb8 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -115,7 +115,8 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
exp2 = rqst_exp_get_by_name(rqstp, mnt, mounts);
if (IS_ERR(exp2)) {
- err = PTR_ERR(exp2);
+ if (PTR_ERR(exp2) != -ENOENT)
+ err = PTR_ERR(exp2);
dput(mounts);
mntput(mnt);
goto out;
diff --git a/include/asm-um/elf-x86_64.h b/include/asm-um/elf-x86_64.h
index bfe27aa2c9c..857471c49da 100644
--- a/include/asm-um/elf-x86_64.h
+++ b/include/asm-um/elf-x86_64.h
@@ -67,27 +67,27 @@ typedef struct { } elf_fpregset_t;
} while (0)
#define ELF_CORE_COPY_REGS(pr_reg, regs) \
- (pr_reg)[0] = (regs)->regs.gp[0]; \
- (pr_reg)[1] = (regs)->regs.gp[1]; \
- (pr_reg)[2] = (regs)->regs.gp[2]; \
- (pr_reg)[3] = (regs)->regs.gp[3]; \
- (pr_reg)[4] = (regs)->regs.gp[4]; \
- (pr_reg)[5] = (regs)->regs.gp[5]; \
- (pr_reg)[6] = (regs)->regs.gp[6]; \
- (pr_reg)[7] = (regs)->regs.gp[7]; \
- (pr_reg)[8] = (regs)->regs.gp[8]; \
- (pr_reg)[9] = (regs)->regs.gp[9]; \
- (pr_reg)[10] = (regs)->regs.gp[10]; \
- (pr_reg)[11] = (regs)->regs.gp[11]; \
- (pr_reg)[12] = (regs)->regs.gp[12]; \
- (pr_reg)[13] = (regs)->regs.gp[13]; \
- (pr_reg)[14] = (regs)->regs.gp[14]; \
- (pr_reg)[15] = (regs)->regs.gp[15]; \
- (pr_reg)[16] = (regs)->regs.gp[16]; \
- (pr_reg)[17] = (regs)->regs.gp[17]; \
- (pr_reg)[18] = (regs)->regs.gp[18]; \
- (pr_reg)[19] = (regs)->regs.gp[19]; \
- (pr_reg)[20] = (regs)->regs.gp[20]; \
+ (pr_reg)[0] = (regs)->regs.skas.regs[0]; \
+ (pr_reg)[1] = (regs)->regs.skas.regs[1]; \
+ (pr_reg)[2] = (regs)->regs.skas.regs[2]; \
+ (pr_reg)[3] = (regs)->regs.skas.regs[3]; \
+ (pr_reg)[4] = (regs)->regs.skas.regs[4]; \
+ (pr_reg)[5] = (regs)->regs.skas.regs[5]; \
+ (pr_reg)[6] = (regs)->regs.skas.regs[6]; \
+ (pr_reg)[7] = (regs)->regs.skas.regs[7]; \
+ (pr_reg)[8] = (regs)->regs.skas.regs[8]; \
+ (pr_reg)[9] = (regs)->regs.skas.regs[9]; \
+ (pr_reg)[10] = (regs)->regs.skas.regs[10]; \
+ (pr_reg)[11] = (regs)->regs.skas.regs[11]; \
+ (pr_reg)[12] = (regs)->regs.skas.regs[12]; \
+ (pr_reg)[13] = (regs)->regs.skas.regs[13]; \
+ (pr_reg)[14] = (regs)->regs.skas.regs[14]; \
+ (pr_reg)[15] = (regs)->regs.skas.regs[15]; \
+ (pr_reg)[16] = (regs)->regs.skas.regs[16]; \
+ (pr_reg)[17] = (regs)->regs.skas.regs[17]; \
+ (pr_reg)[18] = (regs)->regs.skas.regs[18]; \
+ (pr_reg)[19] = (regs)->regs.skas.regs[19]; \
+ (pr_reg)[20] = (regs)->regs.skas.regs[20]; \
(pr_reg)[21] = current->thread.arch.fs; \
(pr_reg)[22] = 0; \
(pr_reg)[23] = 0; \
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 82a558b655d..3eca7a55f2e 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -233,6 +233,7 @@ int ptrace_detach(struct task_struct *child, unsigned int data)
/* Architecture-specific hardware disable .. */
ptrace_disable(child);
+ clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
write_lock_irq(&tasklist_lock);
/* protect against de_thread()->release_task() */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-20 01:20:23 +0000