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| author |   Ashok Raj <ashok.raj@intel.com> | 2022-08-29 18:10:30 +0000 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-09-02 08:01:58 +0200 |
| commit | 7fce8d6eccbc31a561d07c79f359ad09f0424347 (patch) | |
| tree | d0898be7afa129a121b2f548cc48cec662cea0b6 | |
| parent | x86/microcode: Remove ->request_microcode_user() (diff) | |
| download | wireguard-linux-7fce8d6eccbc31a561d07c79f359ad09f0424347.tar.xz wireguard-linux-7fce8d6eccbc31a561d07c79f359ad09f0424347.zip | |
x86/microcode: Print previous version of microcode after reload
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
| -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 ad57e0e4d674..6a41cee242f6 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -491,7 +491,7 @@ wait_for_siblings: */ static int microcode_reload_late(void) { - int ret; + int old = boot_cpu_data.microcode, ret; pr_err("Attempting late microcode loading - it is dangerous and taints the kernel.\n"); pr_err("You should switch to early loading, if possible.\n"); @@ -503,7 +503,8 @@ 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; } |