[PATCH v2 1/3] powerpc/pseries: Parse control memory access error
From: Ganesh Goudar <hidden>
Date: 2021-08-05 09:21:17
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Add support to parse and log control memory access error for pseries. Signed-off-by: Ganesh Goudar <redacted> --- v2: No changes in this patch. --- arch/powerpc/platforms/pseries/ras.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index 167f2e1b8d39..608c35cad0c3 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c@@ -80,6 +80,7 @@ struct pseries_mc_errorlog { #define MC_ERROR_TYPE_TLB 0x04 #define MC_ERROR_TYPE_D_CACHE 0x05 #define MC_ERROR_TYPE_I_CACHE 0x07 +#define MC_ERROR_TYPE_CTRL_MEM_ACCESS 0x08 /* RTAS pseries MCE error sub types */ #define MC_ERROR_UE_INDETERMINATE 0
@@ -103,6 +104,9 @@ struct pseries_mc_errorlog { #define MC_ERROR_TLB_MULTIHIT 2 #define MC_ERROR_TLB_INDETERMINATE 3 +#define MC_ERROR_CTRL_MEM_ACCESS_PTABLE_WALK 0 +#define MC_ERROR_CTRL_MEM_ACCESS_OP_ACCESS 1 + static inline u8 rtas_mc_error_sub_type(const struct pseries_mc_errorlog *mlog) { switch (mlog->error_type) {
@@ -112,6 +116,8 @@ static inline u8 rtas_mc_error_sub_type(const struct pseries_mc_errorlog *mlog) case MC_ERROR_TYPE_ERAT: case MC_ERROR_TYPE_TLB: return (mlog->sub_err_type & 0x03); + case MC_ERROR_TYPE_CTRL_MEM_ACCESS: + return (mlog->sub_err_type & 0x70) >> 4; default: return 0; }
@@ -699,6 +705,21 @@ static int mce_handle_err_virtmode(struct pt_regs *regs, case MC_ERROR_TYPE_I_CACHE: mce_err.error_type = MCE_ERROR_TYPE_ICACHE; break; + case MC_ERROR_TYPE_CTRL_MEM_ACCESS: + mce_err.error_type = MCE_ERROR_TYPE_RA; + if (mce_log->sub_err_type & 0x80) + eaddr = be64_to_cpu(mce_log->effective_address); + switch (err_sub_type) { + case MC_ERROR_CTRL_MEM_ACCESS_PTABLE_WALK: + mce_err.u.ra_error_type = + MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN; + break; + case MC_ERROR_CTRL_MEM_ACCESS_OP_ACCESS: + mce_err.u.ra_error_type = + MCE_RA_ERROR_LOAD_STORE_FOREIGN; + break; + } + break; case MC_ERROR_TYPE_UNKNOWN: default: mce_err.error_type = MCE_ERROR_TYPE_UNKNOWN;
--
2.31.1