[v1] x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block

[tip: x86/bugs] x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block

tip-bot2 for Josh Poimboeuf posted 1 patch 2 years, 3 months ago

Diff against v1 v1 v1 v1
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arch/x86/kernel/cpu/bugs.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

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[tip: x86/bugs] x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block

Posted by tip-bot2 for Josh Poimboeuf 2 years, 3 months ago

The following commit has been merged into the x86/bugs branch of tip:

Commit-ID:     a542794756c50e0b339a751635cdbbd5893f2b4e
Gitweb:        https://git.kernel.org/tip/a542794756c50e0b339a751635cdbbd5893f2b4e
Author:        Josh Poimboeuf <jpoimboe@kernel.org>
AuthorDate:    Fri, 25 Aug 2023 00:01:48 -07:00
Committer:     Ingo Molnar <mingo@kernel.org>
CommitterDate: Fri, 25 Aug 2023 11:22:01 +02:00

x86/srso: Move retbleed IBPB check into existing 'has_microcode' code block

Simplify the code flow a bit by moving the retbleed IBPB check into the
existing 'has_microcode' block.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/c64b84b6df4e82423abe2441a1a088a8c7f1ae14.1692919072.git.jpoimboe@kernel.org
---
 arch/x86/kernel/cpu/bugs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 0621615..b086fd4 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -2430,10 +2430,8 @@ static void __init srso_select_mitigation(void)
 			setup_force_cpu_cap(X86_FEATURE_SRSO_NO);
 			return;
 		}
-	}
 
-	if (retbleed_mitigation == RETBLEED_MITIGATION_IBPB) {
-		if (has_microcode) {
+		if (retbleed_mitigation == RETBLEED_MITIGATION_IBPB) {
 			srso_mitigation = SRSO_MITIGATION_IBPB;
 			goto out;
 		}