From d635711daa98be86d4c7fd01499c34f566b54ccb Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 10 Jun 2016 05:30:17 -0300 Subject: Linux-libre 4.6.2-gnu --- arch/x86/kernel/cpu/mcheck/mce-severity.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) (limited to 'arch/x86/kernel/cpu/mcheck/mce-severity.c') diff --git a/arch/x86/kernel/cpu/mcheck/mce-severity.c b/arch/x86/kernel/cpu/mcheck/mce-severity.c index 9c682c222..5119766d9 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-severity.c +++ b/arch/x86/kernel/cpu/mcheck/mce-severity.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "mce-internal.h" @@ -29,7 +30,7 @@ * panic situations) */ -enum context { IN_KERNEL = 1, IN_USER = 2 }; +enum context { IN_KERNEL = 1, IN_USER = 2, IN_KERNEL_RECOV = 3 }; enum ser { SER_REQUIRED = 1, NO_SER = 2 }; enum exception { EXCP_CONTEXT = 1, NO_EXCP = 2 }; @@ -48,6 +49,7 @@ static struct severity { #define MCESEV(s, m, c...) { .sev = MCE_ ## s ## _SEVERITY, .msg = m, ## c } #define KERNEL .context = IN_KERNEL #define USER .context = IN_USER +#define KERNEL_RECOV .context = IN_KERNEL_RECOV #define SER .ser = SER_REQUIRED #define NOSER .ser = NO_SER #define EXCP .excp = EXCP_CONTEXT @@ -86,6 +88,10 @@ static struct severity { PANIC, "In kernel and no restart IP", EXCP, KERNEL, MCGMASK(MCG_STATUS_RIPV, 0) ), + MCESEV( + PANIC, "In kernel and no restart IP", + EXCP, KERNEL_RECOV, MCGMASK(MCG_STATUS_RIPV, 0) + ), MCESEV( DEFERRED, "Deferred error", NOSER, MASK(MCI_STATUS_UC|MCI_STATUS_DEFERRED|MCI_STATUS_POISON, MCI_STATUS_DEFERRED) @@ -122,6 +128,11 @@ static struct severity { SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCI_ADDR, MCI_UC_SAR|MCI_ADDR), MCGMASK(MCG_STATUS_RIPV|MCG_STATUS_EIPV, MCG_STATUS_RIPV) ), + MCESEV( + AR, "Action required: data load in error recoverable area of kernel", + SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCI_ADDR|MCACOD, MCI_UC_SAR|MCI_ADDR|MCACOD_DATA), + KERNEL_RECOV + ), MCESEV( AR, "Action required: data load error in a user process", SER, MASK(MCI_STATUS_OVER|MCI_UC_SAR|MCI_ADDR|MCACOD, MCI_UC_SAR|MCI_ADDR|MCACOD_DATA), @@ -170,6 +181,9 @@ static struct severity { ) /* always matches. keep at end */ }; +#define mc_recoverable(mcg) (((mcg) & (MCG_STATUS_RIPV|MCG_STATUS_EIPV)) == \ + (MCG_STATUS_RIPV|MCG_STATUS_EIPV)) + /* * If mcgstatus indicated that ip/cs on the stack were * no good, then "m->cs" will be zero and we will have @@ -183,7 +197,11 @@ static struct severity { */ static int error_context(struct mce *m) { - return ((m->cs & 3) == 3) ? IN_USER : IN_KERNEL; + if ((m->cs & 3) == 3) + return IN_USER; + if (mc_recoverable(m->mcgstatus) && ex_has_fault_handler(m->ip)) + return IN_KERNEL_RECOV; + return IN_KERNEL; } /* -- cgit v1.2.3-54-g00ecf