Re: [PATCH for-4.21] x86/ucode: Add extra rows to the entrysign model table (again)

[Oleksii Kurochko]

On 11/14/25 4:24 PM, Andrew Cooper wrote:

Link:https://git.kernel.org/tip/dd14022a7ce96963aa923e35cf4bcc8c32f95840
Fixes: ff8228ab4658 ("x86/ucode: Relax digest check when Entrysign is fixed in 
firmware")
Signed-off-by: Andrew Cooper<andrew.coop...@citrix.com>
---
CC: Jan Beulich<jbeul...@suse.com>
CC: Roger Pau Monné<roger....@citrix.com>
CC: Oleksii Kurochko<oleksii.kuroc...@gmail.com>

Found because AMD have released ucode to fix RDSEED on this CPU, and I
cross-referenced the tables.

Again, for 4.21 even at this juncture.  It wants backporting everywhere in due
course.

The same as for previous/another patch:
  Release-Acked-By: Oleksii Kurochko<oleksii.kuroc...@gmail.com>

Thanks.

~ Oleksii

---
  xen/arch/x86/cpu/microcode/amd.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/xen/arch/x86/cpu/microcode/amd.c b/xen/arch/x86/cpu/microcode/amd.c
index 550b8c1e57ec..4a7573c885e5 100644
--- a/xen/arch/x86/cpu/microcode/amd.c
+++ b/xen/arch/x86/cpu/microcode/amd.c
@@ -659,6 +659,7 @@ void __init amd_check_entrysign(void)
      case 0x0b1010: fixed_rev = 0x47; break;
      case 0x0b2040: fixed_rev = 0x32; break;
      case 0x0b4040: fixed_rev = 0x32; break;
+    case 0x0b4041: fixed_rev = 0x02; break;
      case 0x0b6000: fixed_rev = 0x32; break;
      case 0x0b6080: fixed_rev = 0x32; break;
      case 0x0b7000: fixed_rev = 0x32; break;