diff options
| author | Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | 2013-10-30 18:35:11 +0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-12-05 09:04:39 +0400 |
| commit | e22a22740c1ac23aaa10835f026b3549ee3e4e75 (patch) | |
| tree | b9657323d8977882dab4d970316f88281466e9ed /arch/powerpc/kernel/cputable.c | |
| parent | 0440705049b041d84268ea57f6e90e2f16618897 (diff) | |
| download | linux-e22a22740c1ac23aaa10835f026b3549ee3e4e75.tar.xz | |
powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power7.
If we get a machine check exception due to SLB or TLB errors, then flush
SLBs/TLBs and reload SLBs to recover. We do this in real mode before turning
on MMU. Otherwise we would run into nested machine checks.
If we get a machine check when we are in guest, then just flush the
SLBs and continue. This patch handles errors for power7. The next
patch will handle errors for power8
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/cputable.c')
| -rw-r--r-- | arch/powerpc/kernel/cputable.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 55d0f9c282b8..c54188bcdd9e 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -73,6 +73,7 @@ extern void __restore_cpu_power8(void); extern void __restore_cpu_a2(void); extern void __flush_tlb_power7(unsigned long inval_selector); extern void __flush_tlb_power8(unsigned long inval_selector); +extern long __machine_check_early_realmode_p7(struct pt_regs *regs); #endif /* CONFIG_PPC64 */ #if defined(CONFIG_E500) extern void __setup_cpu_e5500(unsigned long offset, struct cpu_spec* spec); @@ -443,6 +444,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_setup = __setup_cpu_power7, .cpu_restore = __restore_cpu_power7, .flush_tlb = __flush_tlb_power7, + .machine_check_early = __machine_check_early_realmode_p7, .platform = "power7", }, { /* 2.07-compliant processor, i.e. Power8 "architected" mode */ @@ -479,6 +481,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_setup = __setup_cpu_power7, .cpu_restore = __restore_cpu_power7, .flush_tlb = __flush_tlb_power7, + .machine_check_early = __machine_check_early_realmode_p7, .platform = "power7", }, { /* Power7+ */ @@ -498,6 +501,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_setup = __setup_cpu_power7, .cpu_restore = __restore_cpu_power7, .flush_tlb = __flush_tlb_power7, + .machine_check_early = __machine_check_early_realmode_p7, .platform = "power7+", }, { /* Power8E */ |