From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 08/12] x86/microcode: Collect CPU info on resume
Date: Tue, 25 Oct 2016 11:55:18 +0200 [thread overview]
Message-ID: <20161025095522.11964-9-bp@alien8.de> (raw)
In-Reply-To: <20161025095522.11964-1-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
We need to reread the CPU's microcode revision after resume because
applied microcode gets "forgotten" depending on the sleep state.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/kernel/cpu/microcode/core.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index a18ff7547fa9..f737039d59b2 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -498,6 +498,9 @@ static enum ucode_state microcode_update_cpu(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
+ /* Refresh CPU microcode revision after resume. */
+ collect_cpu_info(cpu);
+
if (uci->valid)
return microcode_resume_cpu(cpu);
--
2.10.0
next prev parent reply other threads:[~2016-10-25 9:55 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-25 9:55 [PATCH 00/12] x86/microcode: Rework microcode loading Borislav Petkov
2016-10-25 9:55 ` [PATCH 01/12] x86/microcode: Run the AP-loading routine only on the application processors Borislav Petkov
2016-10-25 16:27 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 02/12] x86/microcode: Move driver authors to CREDITS Borislav Petkov
2016-10-25 16:28 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 03/12] x86/microcode/intel: Simplify generic_load_microcode() Borislav Petkov
2016-10-25 16:28 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 04/12] x86/microcode: Remove one ifdef clause Borislav Petkov
2016-10-25 16:29 ` [tip:x86/microcode] x86/microcode: Remove one #ifdef clause tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 05/12] x86/microcode: Export the microcode cache linked list Borislav Petkov
2016-10-25 16:29 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 06/12] x86/microcode/AMD: Hand down the CPU family Borislav Petkov
2016-10-25 16:30 ` [tip:x86/microcode] x86/microcode/amd: " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 07/12] x86/microcode: Issue the debug printk on resume only on success Borislav Petkov
2016-10-25 16:30 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` Borislav Petkov [this message]
2016-10-25 16:31 ` [tip:x86/microcode] x86/microcode: Collect CPU info on resume tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 09/12] x86/microcode/AMD: Retract functions Borislav Petkov
2016-10-25 16:31 ` [tip:x86/microcode] x86/microcode/amd: Move private inlines to .c and mark local functions static tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 10/12] x86/microcode/intel: Remove intel_lib.c Borislav Petkov
2016-10-25 16:32 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 11/12] x86/microcode: Rework microcode loading Borislav Petkov
2016-10-25 16:32 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2016-10-25 9:55 ` [PATCH 12/12] x86/microcode: Bump driver version, update copyrights Borislav Petkov
2016-10-25 16:33 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
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