From: Ashok Raj ashok.raj@intel.com
[ 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 --- arch/x86/kernel/cpu/microcode/core.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index 5b27030714e43..707a385943b41 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -508,7 +508,7 @@ static int __reload_late(void *info) */ 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; }