powerpc/64s: allow machine check handler to set severity and initiator

Currently severity and initiator are always set to MCE_SEV_ERROR_SYNC and
MCE_INITIATOR_CPU in the core mce code. Allow them to be set by the
machine specific mce handlers.

No functional change for existing handlers.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h
index f97d8cb..b2a5865 100644 (file)
--- a/arch/powerpc/include/asm/mce.h
+++ b/arch/powerpc/include/asm/mce.h
@@ -177,7 +177,8 @@ struct mce_error_info {
                enum MCE_EratErrorType erat_error_type:8;
                enum MCE_TlbErrorType tlb_error_type:8;
        } u;
-       uint8_t         reserved[2];
+       enum MCE_Severity       severity:8;
+       enum MCE_Initiator      initiator:8;
 };
 
 #define MAX_MC_EVT     100

diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
index c6923ff..9495072 100644 (file)
--- a/arch/powerpc/kernel/mce.c
+++ b/arch/powerpc/kernel/mce.c
@@ -90,13 +90,14 @@ void save_mce_event(struct pt_regs *regs, long handled,
        mce->gpr3 = regs->gpr[3];
        mce->in_use = 1;
 
-       mce->initiator = MCE_INITIATOR_CPU;
        /* Mark it recovered if we have handled it and MSR(RI=1). */
        if (handled && (regs->msr & MSR_RI))
                mce->disposition = MCE_DISPOSITION_RECOVERED;
        else
                mce->disposition = MCE_DISPOSITION_NOT_RECOVERED;
-       mce->severity = MCE_SEV_ERROR_SYNC;
+
+       mce->initiator = mce_err->initiator;
+       mce->severity = mce_err->severity;
 
        /*
         * Populate the mce error_type and type-specific error_type.

diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index 7353991..c37fc5f 100644 (file)
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -281,6 +281,9 @@ long __machine_check_early_realmode_p7(struct pt_regs *regs)
        long handled = 1;
        struct mce_error_info mce_error_info = { 0 };
 
+       mce_error_info.severity = MCE_SEV_ERROR_SYNC;
+       mce_error_info.initiator = MCE_INITIATOR_CPU;
+
        srr1 = regs->msr;
        nip = regs->nip;
 
@@ -352,6 +355,9 @@ long __machine_check_early_realmode_p8(struct pt_regs *regs)
        long handled = 1;
        struct mce_error_info mce_error_info = { 0 };
 
+       mce_error_info.severity = MCE_SEV_ERROR_SYNC;
+       mce_error_info.initiator = MCE_INITIATOR_CPU;
+
        srr1 = regs->msr;
        nip = regs->nip;