The following commit has been merged into the x86/microcode branch of tip:
Commit-ID: e0dd49a0eb690820e9d0eef0ad7b6ae435cf6549
Gitweb: https://git.kernel.org/tip/e0dd49a0eb690820e9d0eef0ad7b6ae435cf6549
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 10 Oct 2023 17:08:41 +02:00
Committer: Borislav Petkov (AMD) <bp@xxxxxxxxx>
CommitterDate: Thu, 19 Oct 2023 15:40:00 +02:00
x86/microcode/amd: Use correct per CPU ucode_cpu_info
find_blobs_in_containers() is invoked on every CPU but overwrites
unconditionally ucode_cpu_info of CPU0.
Fix this by using the proper CPU data and move the assignment into the
call site apply_ucode_from_containers() so that the function can be
reused.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Link: https://lore.kernel.org/r/20231010150702.433454320@xxxxxxxxxxxxx
---
arch/x86/kernel/cpu/microcode/amd.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c
index b827390..56d8bd6 100644
--- a/arch/x86/kernel/cpu/microcode/amd.c
+++ b/arch/x86/kernel/cpu/microcode/amd.c
@@ -503,9 +503,6 @@ static void find_blobs_in_containers(unsigned int cpuid_1_eax, struct cpio_data
if (!get_builtin_microcode(&cp, x86_family(cpuid_1_eax)))
cp = find_microcode_in_initrd(ucode_path);
- /* Needed in load_microcode_amd() */
- ucode_cpu_info->cpu_sig.sig = cpuid_1_eax;
-
*ret = cp;
}
@@ -513,6 +510,9 @@ static void apply_ucode_from_containers(unsigned int cpuid_1_eax)
{
struct cpio_data cp = { };
+ /* Needed in load_microcode_amd() */
+ ucode_cpu_info[smp_processor_id()].cpu_sig.sig = cpuid_1_eax;
+
find_blobs_in_containers(cpuid_1_eax, &cp);
if (!(cp.data && cp.size))
return;
|