From 2117654e806c08c343e3d0567bbedf33eab040c8 Mon Sep 17 00:00:00 2001 From: Smita Koralahalli Date: Tue, 6 Dec 2022 11:36:06 -0600 Subject: x86/mce: Define a function to extract ErrorAddr from MCA_ADDR Move MCA_ADDR[ErrorAddr] extraction into a separate helper function. This will be further refactored to support extended ErrorAddr bits in MCA_ADDR in newer AMD CPUs. [ bp: Massage. ] Signed-off-by: Smita Koralahalli Signed-off-by: Borislav Petkov Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Yazen Ghannam Link: https://lore.kernel.org/all/20220225193342.215780-3-Smita.KoralahalliChannabasappa@amd.com/ --- arch/x86/kernel/cpu/mce/amd.c | 10 +--------- arch/x86/kernel/cpu/mce/core.c | 10 +--------- arch/x86/kernel/cpu/mce/internal.h | 15 +++++++++++++++ 3 files changed, 17 insertions(+), 18 deletions(-) diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index 10fb5b5c9efa..c6b1fd5a34b8 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -736,15 +736,7 @@ static void __log_error(unsigned int bank, u64 status, u64 addr, u64 misc) if (m.status & MCI_STATUS_ADDRV) { m.addr = addr; - /* - * Extract [55:] where lsb is the least significant - * *valid* bit of the address bits. - */ - if (mce_flags.smca) { - u8 lsb = (m.addr >> 56) & 0x3f; - - m.addr &= GENMASK_ULL(55, lsb); - } + smca_extract_err_addr(&m); } if (mce_flags.smca) { diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 2c8ec5c71712..d0ade77c41f7 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -633,15 +633,7 @@ static noinstr void mce_read_aux(struct mce *m, int i) m->addr <<= shift; } - /* - * Extract [55:] where lsb is the least significant - * *valid* bit of the address bits. - */ - if (mce_flags.smca) { - u8 lsb = (m->addr >> 56) & 0x3f; - - m->addr &= GENMASK_ULL(55, lsb); - } + smca_extract_err_addr(m); } if (mce_flags.smca) { diff --git a/arch/x86/kernel/cpu/mce/internal.h b/arch/x86/kernel/cpu/mce/internal.h index 7e03f5b7f6bd..6dcb94fe0f65 100644 --- a/arch/x86/kernel/cpu/mce/internal.h +++ b/arch/x86/kernel/cpu/mce/internal.h @@ -189,8 +189,23 @@ extern bool filter_mce(struct mce *m); #ifdef CONFIG_X86_MCE_AMD extern bool amd_filter_mce(struct mce *m); + +/* Extract [55:] where lsb is the LS-*valid* bit of the address bits. */ +static __always_inline void smca_extract_err_addr(struct mce *m) +{ + u8 lsb; + + if (!mce_flags.smca) + return; + + lsb = (m->addr >> 56) & 0x3f; + + m->addr &= GENMASK_ULL(55, lsb); +} + #else static inline bool amd_filter_mce(struct mce *m) { return false; } +static inline void smca_extract_err_addr(struct mce *m) { } #endif #ifdef CONFIG_X86_ANCIENT_MCE -- cgit v1.2.3