From: Yazen Ghannam Date: Mon, 26 Mar 2018 19:15:25 +0000 (-0500) Subject: Revert "x86/mce/AMD: Collect error info even if valid bits are not set" X-Git-Tag: v4.19~1356^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e2efacb6a54ab54626da3507be1008d0040492cc;p=platform%2Fkernel%2Flinux-rpi.git Revert "x86/mce/AMD: Collect error info even if valid bits are not set" This reverts commit 4b1e84276a6172980c5bf39aa091ba13e90d6dad. Software uses the valid bits to decide if the values can be used for further processing or other actions. So setting the valid bits will have software act on values that it shouldn't be acting on. The recommendation to save all the register values does not mean that the values are always valid. Signed-off-by: Yazen Ghannam Signed-off-by: Thomas Gleixner Cc: tony.luck@intel.com Cc: Yazen Ghannam Cc: bp@suse.de Cc: linux-edac@vger.kernel.org Link: https://lkml.kernel.org/r/20180326191526.64314-1-Yazen.Ghannam@amd.com --- diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 21962c4..3c1eec1 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -446,20 +446,6 @@ static inline void mce_gather_info(struct mce *m, struct pt_regs *regs) if (mca_cfg.rip_msr) m->ip = mce_rdmsrl(mca_cfg.rip_msr); } - - /* - * Error handlers should save the values in MCA_ADDR, MCA_MISC0, and - * MCA_SYND even if MCA_STATUS[AddrV], MCA_STATUS[MiscV], and - * MCA_STATUS[SyndV] are zero. - */ - if (m->cpuvendor == X86_VENDOR_AMD) { - u64 status = MCI_STATUS_ADDRV | MCI_STATUS_MISCV; - - if (mce_flags.smca) - status |= MCI_STATUS_SYNDV; - - m->status |= status; - } } int mce_available(struct cpuinfo_x86 *c)