55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From 527c5ac4a29d4b854b10586ea877c65174cbd40d Mon Sep 17 00:00:00 2001
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From: Ashok Raj <ashok.raj@intel.com>
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Date: Mon, 9 Jan 2023 07:35:52 -0800
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Subject: [PATCH 15/36] x86/microcode: Adjust late loading result reporting
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message
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During late microcode loading, the "Reload completed" message is issued
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unconditionally, regardless of success or failure.
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Adjust the message to report the result of the update.
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[ bp: Massage. ]
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Fixes: 9bd681251b7c ("x86/microcode: Announce reload operation's completion")
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Suggested-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Ashok Raj <ashok.raj@intel.com>
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Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
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Reviewed-by: Tony Luck <tony.luck@intel.com>
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Link: https://lore.kernel.org/lkml/874judpqqd.ffs@tglx/
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(cherry picked from commit 6eab3abac7043226e5375e9ead0c7607ced6767b)
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CVE: CVE-2023-20593
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Signed-off-by: Mridula Shastry <mridula.c.shastry@oracle.com>
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Reviewed-by: Todd Vierling <todd.vierling@oracle.com>
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---
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arch/x86/kernel/cpu/microcode/core.c | 11 +++++++----
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1 file changed, 7 insertions(+), 4 deletions(-)
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diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
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index 9df2c40a4ddf..fb383088bede 100644
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--- a/arch/x86/kernel/cpu/microcode/core.c
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+++ b/arch/x86/kernel/cpu/microcode/core.c
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@@ -472,11 +472,14 @@ static int microcode_reload_late(void)
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store_cpu_caps(&prev_info);
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ret = stop_machine_cpuslocked(__reload_late, NULL, cpu_online_mask);
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- if (ret == 0)
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+ if (!ret) {
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+ pr_info("Reload succeeded, microcode revision: 0x%x -> 0x%x\n",
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+ old, boot_cpu_data.microcode);
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microcode_check(&prev_info);
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-
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- pr_info("Reload completed, microcode revision: 0x%x -> 0x%x\n",
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- old, boot_cpu_data.microcode);
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+ } else {
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+ pr_info("Reload failed, current microcode revision: 0x%x\n",
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+ boot_cpu_data.microcode);
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+ }
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return ret;
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}
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--
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2.39.3
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