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| author | Ashok Raj <ashok.raj@intel.com> | 2022-08-29 18:10:30 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-10 09:39:12 +0100 |
| commit | a9e76b276b10c89d9585d775a37bcc8d925fa89d (patch) | |
| tree | e61bbb3d5d588bccd491aaa1a9243b2db3408d38 /arch | |
| parent | 6d2b3a319144f3f5148d8a2b19549ea3bb118c2e (diff) | |
| download | linux-stable-a9e76b276b10c89d9585d775a37bcc8d925fa89d.tar.gz linux-stable-a9e76b276b10c89d9585d775a37bcc8d925fa89d.tar.bz2 linux-stable-a9e76b276b10c89d9585d775a37bcc8d925fa89d.zip | |
x86/microcode: Print previous version of microcode after reload
[ Upstream commit 7fce8d6eccbc31a561d07c79f359ad09f0424347 ]
Print both old and new versions of microcode after a reload is complete
because knowing the previous microcode version is sometimes important
from a debugging perspective.
[ bp: Massage commit message. ]
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20220829181030.722891-1-ashok.raj@intel.com
Stable-dep-of: c0dd9245aa9e ("x86/microcode: Check CPU capabilities after late microcode update correctly")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/cpu/microcode/core.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index dc346bbb0677..a7fc2d47a4ac 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -508,7 +508,7 @@ wait_for_siblings: */ static int microcode_reload_late(void) { - int ret; + int old = boot_cpu_data.microcode, ret; atomic_set(&late_cpus_in, 0); atomic_set(&late_cpus_out, 0); @@ -517,7 +517,8 @@ static int microcode_reload_late(void) if (ret == 0) microcode_check(); - pr_info("Reload completed, microcode revision: 0x%x\n", boot_cpu_data.microcode); + pr_info("Reload completed, microcode revision: 0x%x -> 0x%x\n", + old, boot_cpu_data.microcode); return ret; } |