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x86/srso: Print mitigation for retbleed IBPB case 

[ Upstream commit de9f5f7b06a5b7adbfdd8016f011120a4e928add ]

When overriding the requested mitigation with IBPB due to retbleed=ibpb,
print the mitigation in the usual format instead of a custom error
message.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/ec3af919e267773d896c240faf30bfc6a1fd6304.1693889988.git.jpoimboe@kernel.org
Stable-dep-of: dc6306ad5b0d ("x86/srso: Fix vulnerability reporting for missing microcode")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Josh Poimboeuf 2023-09-04 22:04:51 -07:00 committed by Greg Kroah-Hartman
parent 1be339b0dc
commit 5b66cf0762
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kernel/cpu/bugs.c
View File

@ -2425,9 +2425,8 @@ static void __init srso_select_mitigation(void)
if (retbleed_mitigation == RETBLEED_MITIGATION_IBPB) {
if (has_microcode) {
pr_err("Retbleed IBPB mitigation enabled, using same for SRSO\n");
srso_mitigation = SRSO_MITIGATION_IBPB;
goto pred_cmd;
goto out;
}
}
@ -2493,7 +2492,8 @@ static void __init srso_select_mitigation(void)
break;
}
pr_info("%s%s\n", srso_strings[srso_mitigation], (has_microcode ? "" : ", no microcode"));
out:
pr_info("%s%s\n", srso_strings[srso_mitigation], has_microcode ? "" : ", no microcode");
pred_cmd:
if ((!boot_cpu_has_bug(X86_BUG_SRSO) || srso_cmd == SRSO_CMD_OFF) &&