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

[tip-bot2 for Josh Poimboeuf]

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

Commit-ID:     27ee0600912c8a02fd6901bc4413709282d7b3f8
Gitweb:        https://git.kernel.org/tip/27ee0600912c8a02fd6901bc4413709282d7b3f8
Author:        Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
AuthorDate:    Mon, 04 Sep 2023 22:04:59 -07:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 19 Sep 2023 11:42:48 +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@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Link: https://lore.kernel.org/r/0a22b86b1f6b07f9046a9ab763fc0e0d1b7a91d4.1693889988.git.jpoimboe@xxxxxxxxxx
---
 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 941ac94..6b443f0 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;
 		}