iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86/microcode/intel: Do not retry microcode reloading on the APs

Browse Source 
The retries in load_ucode_intel_ap() were in place to support systems
with mixed steppings. Mixed steppings are no longer supported and there is
only one microcode image at a time. Any retries will simply reattempt to
apply the same image over and over without making progress.

  [ bp: Zap the circumstantial reasoning from the commit message. ]

Fixes: 06b8534cb728 ("x86/microcode: Rework microcode loading")
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20221129210832.107850-3-ashok.raj@intel.com
This commit is contained in:
Ashok Raj 2022-11-29 13:08:27 -08:00 committed by Borislav Petkov (AMD)
parent 5b1586ab06
commit be1b670f61
1 changed files with 1 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/kernel/cpu/microcode/intel.c
View File

@ -495,7 +495,6 @@ void load_ucode_intel_ap(void)
else
iup = &intel_ucode_patch;
reget:
if (!*iup) {
patch = __load_ucode_intel(&uci);
if (!patch)
@ -506,12 +505,7 @@ reget:
uci.mc = *iup;
if (apply_microcode_early(&uci, true)) {
/* Mixed-silicon system? Try to refetch the proper patch: */
*iup = NULL;
goto reget;
}
apply_microcode_early(&uci, true);
}
static struct microcode_intel *find_patch(struct ucode_cpu_info *uci)