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| author | Andi Kleen <andi@firstfloor.org> | 2009-05-27 21:56:56 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-06-03 14:40:38 -0700 |
| commit | d620c67fb92aa11736112f9a03e31d8e3079c57a (patch) | |
| tree | ad624a23926c1cadaa577b36f8eb57f4de055bc0 | |
| parent | f6fb0ac0869500323c78fa21992fe1933af61e91 (diff) | |
| download | op-kernel-dev-d620c67fb92aa11736112f9a03e31d8e3079c57a.zip op-kernel-dev-d620c67fb92aa11736112f9a03e31d8e3079c57a.tar.gz | |
x86, mce: support more than 256 CPUs in struct mce
The old struct mce had a limitation to 256 CPUs. But x86 Linux supports
more than that now with x2apic. Add a new field extcpu to report the
extended number.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| -rw-r--r-- | arch/x86/include/asm/mce.h | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce-inject.c | 10 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce.c | 4 |
3 files changed, 9 insertions, 9 deletions
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h index 0a61946..b4a04b6 100644 --- a/arch/x86/include/asm/mce.h +++ b/arch/x86/include/asm/mce.h @@ -40,9 +40,9 @@ struct mce { __u64 res2; /* dito. */ __u8 cs; /* code segment */ __u8 bank; /* machine check bank */ - __u8 cpu; /* cpu that raised the error */ + __u8 cpu; /* cpu number; obsolete; use extcpu now */ __u8 finished; /* entry is valid */ - __u32 pad; + __u32 extcpu; /* linux cpu number that detected the error */ }; /* diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 7b3a542..7d858fb 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -23,14 +23,14 @@ /* Update fake mce registers on current CPU. */ static void inject_mce(struct mce *m) { - struct mce *i = &per_cpu(injectm, m->cpu); + struct mce *i = &per_cpu(injectm, m->extcpu); /* Make sure noone reads partially written injectm */ i->finished = 0; mb(); m->finished = 0; /* First set the fields after finished */ - i->cpu = m->cpu; + i->extcpu = m->extcpu; mb(); /* Now write record in order, finished last (except above) */ memcpy(i, m, sizeof(struct mce)); @@ -49,7 +49,7 @@ static void raise_mce(unsigned long data) { struct delayed_mce *dm = (struct delayed_mce *)data; struct mce *m = &dm->m; - int cpu = m->cpu; + int cpu = m->extcpu; inject_mce(m); if (m->status & MCI_STATUS_UC) { @@ -93,7 +93,7 @@ static ssize_t mce_write(struct file *filp, const char __user *ubuf, if (copy_from_user(&m, ubuf, usize)) return -EFAULT; - if (m.cpu >= num_possible_cpus() || !cpu_online(m.cpu)) + if (m.extcpu >= num_possible_cpus() || !cpu_online(m.extcpu)) return -EINVAL; dm = kmalloc(sizeof(struct delayed_mce), GFP_KERNEL); @@ -108,7 +108,7 @@ static ssize_t mce_write(struct file *filp, const char __user *ubuf, memcpy(&dm->m, &m, sizeof(struct mce)); setup_timer(&dm->timer, raise_mce, (unsigned long)dm); dm->timer.expires = jiffies + 2; - add_timer_on(&dm->timer, m.cpu); + add_timer_on(&dm->timer, m.extcpu); return usize; } diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 3db047e..2c4dd6c 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -94,7 +94,7 @@ static inline int skip_bank_init(int i) void mce_setup(struct mce *m) { memset(m, 0, sizeof(struct mce)); - m->cpu = smp_processor_id(); + m->cpu = m->extcpu = smp_processor_id(); rdtscll(m->tsc); } @@ -158,7 +158,7 @@ static void print_mce(struct mce *m) KERN_EMERG "HARDWARE ERROR\n" KERN_EMERG "CPU %d: Machine Check Exception: %16Lx Bank %d: %016Lx\n", - m->cpu, m->mcgstatus, m->bank, m->status); + m->extcpu, m->mcgstatus, m->bank, m->status); if (m->ip) { printk(KERN_EMERG "RIP%s %02x:<%016Lx> ", !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "", |
