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x86/mce: Detect and use SMCA-specific msr_ops

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Replace all calls to MCx_IA32_{CTL,ADDR,MISC,STATUS} with the
appropriate msr_ops.

Use SMCA-specific msr_ops when on an SMCA-enabled processor.

Carved out from a patch by Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>.

Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/1462019637-16474-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Yazen Ghannam 2016-04-30 14:33:55 +02:00 committed by Ingo Molnar
parent a9750a31ef
commit d9d73fcc87
2 changed files with 29 additions and 19 deletions
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38
arch/x86/kernel/cpu/mcheck/mce.c
View File

@ -403,11 +403,11 @@ static int msr_to_offset(u32 msr)
if (msr == mca_cfg.rip_msr)
return offsetof(struct mce, ip);
if (msr == MSR_IA32_MCx_STATUS(bank))
if (msr == msr_ops.status(bank))
return offsetof(struct mce, status);
if (msr == MSR_IA32_MCx_ADDR(bank))
if (msr == msr_ops.addr(bank))
return offsetof(struct mce, addr);
if (msr == MSR_IA32_MCx_MISC(bank))
if (msr == msr_ops.misc(bank))
return offsetof(struct mce, misc);
if (msr == MSR_IA32_MCG_STATUS)
return offsetof(struct mce, mcgstatus);
@ -570,9 +570,9 @@ static struct notifier_block mce_srao_nb = {
static void mce_read_aux(struct mce *m, int i)
{
if (m->status & MCI_STATUS_MISCV)
m->misc = mce_rdmsrl(MSR_IA32_MCx_MISC(i));
m->misc = mce_rdmsrl(msr_ops.misc(i));
if (m->status & MCI_STATUS_ADDRV) {
m->addr = mce_rdmsrl(MSR_IA32_MCx_ADDR(i));
m->addr = mce_rdmsrl(msr_ops.addr(i));
/*
* Mask the reported address by the reported granularity.
@ -654,7 +654,7 @@ bool machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
m.tsc = 0;
barrier();
m.status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
m.status = mce_rdmsrl(msr_ops.status(i));
if (!(m.status & MCI_STATUS_VAL))
continue;
@ -701,7 +701,7 @@ bool machine_check_poll(enum mcp_flags flags, mce_banks_t *b)
/*
* Clear state for this bank.
*/
mce_wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
mce_wrmsrl(msr_ops.status(i), 0);
}
/*
@ -726,7 +726,7 @@ static int mce_no_way_out(struct mce *m, char **msg, unsigned long *validp,
char *tmp;
for (i = 0; i < mca_cfg.banks; i++) {
m->status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
m->status = mce_rdmsrl(msr_ops.status(i));
if (m->status & MCI_STATUS_VAL) {
__set_bit(i, validp);
if (quirk_no_way_out)
@ -1004,7 +1004,7 @@ static void mce_clear_state(unsigned long *toclear)
for (i = 0; i < mca_cfg.banks; i++) {
if (test_bit(i, toclear))
mce_wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
mce_wrmsrl(msr_ops.status(i), 0);
}
}
@ -1123,7 +1123,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
m.addr = 0;
m.bank = i;
m.status = mce_rdmsrl(MSR_IA32_MCx_STATUS(i));
m.status = mce_rdmsrl(msr_ops.status(i));
if ((m.status & MCI_STATUS_VAL) == 0)
continue;
@ -1493,8 +1493,8 @@ static void __mcheck_cpu_init_clear_banks(void)
if (!b->init)
continue;
wrmsrl(MSR_IA32_MCx_CTL(i), b->ctl);
wrmsrl(MSR_IA32_MCx_STATUS(i), 0);
wrmsrl(msr_ops.ctl(i), b->ctl);
wrmsrl(msr_ops.status(i), 0);
}
}
@ -1684,6 +1684,16 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
mce_flags.overflow_recov = !!(ebx & BIT(0));
mce_flags.succor = !!(ebx & BIT(1));
mce_flags.smca = !!(ebx & BIT(3));
/*
* Install proper ops for Scalable MCA enabled processors
*/
if (mce_flags.smca) {
msr_ops.ctl = smca_ctl_reg;
msr_ops.status = smca_status_reg;
msr_ops.addr = smca_addr_reg;
msr_ops.misc = smca_misc_reg;
}
mce_amd_feature_init(c);
break;
@ -2134,7 +2144,7 @@ static void mce_disable_error_reporting(void)
struct mce_bank *b = &mce_banks[i];
if (b->init)
wrmsrl(MSR_IA32_MCx_CTL(i), 0);
wrmsrl(msr_ops.ctl(i), 0);
}
return;
}
@ -2467,7 +2477,7 @@ static void mce_reenable_cpu(void *h)
struct mce_bank *b = &mce_banks[i];
if (b->init)
wrmsrl(MSR_IA32_MCx_CTL(i), b->ctl);
wrmsrl(msr_ops.ctl(i), b->ctl);
}
}

10
arch/x86/kernel/cpu/mcheck/mce_amd.c
View File

@ -333,7 +333,7 @@ static u32 get_block_address(u32 current_addr, u32 low, u32 high,
/* Fall back to method we used for older processors: */
switch (block) {
case 0:
addr = MSR_IA32_MCx_MISC(bank);
addr = msr_ops.misc(bank);
break;
case 1:
offset = ((low & MASK_BLKPTR_LO) >> 21);
@ -435,7 +435,7 @@ static void __log_error(unsigned int bank, bool threshold_err, u64 misc)
struct mce m;
u64 status;
rdmsrl(MSR_IA32_MCx_STATUS(bank), status);
rdmsrl(msr_ops.status(bank), status);
if (!(status & MCI_STATUS_VAL))
return;
@ -448,10 +448,10 @@ static void __log_error(unsigned int bank, bool threshold_err, u64 misc)
m.misc = misc;
if (m.status & MCI_STATUS_ADDRV)
rdmsrl(MSR_IA32_MCx_ADDR(bank), m.addr);
rdmsrl(msr_ops.addr(bank), m.addr);
mce_log(&m);
wrmsrl(MSR_IA32_MCx_STATUS(bank), 0);
wrmsrl(msr_ops.status(bank), 0);
}
static inline void __smp_deferred_error_interrupt(void)
@ -483,7 +483,7 @@ static void amd_deferred_error_interrupt(void)
unsigned int bank;
for (bank = 0; bank < mca_cfg.banks; ++bank) {
rdmsrl(MSR_IA32_MCx_STATUS(bank), status);
rdmsrl(msr_ops.status(bank), status);
if (!(status & MCI_STATUS_VAL) ||
!(status & MCI_STATUS_DEFERRED))