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Re: [Xen-devel] [PATCH v8 05/16] microcode/amd: distinguish old and mismatched ucode in microcode_fits()
- To: Chao Gao <chao.gao@xxxxxxxxx>
- From: Jan Beulich <JBeulich@xxxxxxxx>
- Date: Fri, 2 Aug 2019 13:41:03 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Ashok Raj <ashok.raj@xxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Fri, 02 Aug 2019 13:42:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHVSTft0Jn4EtXTWU+qyZHe+cUhLQ==
- Thread-topic: [PATCH v8 05/16] microcode/amd: distinguish old and mismatched ucode in microcode_fits()
On 01.08.2019 12:22, Chao Gao wrote:
> Sometimes, an ucode with a level lower than or equal to current CPU's
> patch level is useful. For example, to work around a broken bios which
> only loads ucode for BSP, when BSP parses an ucode blob during bootup,
> it is better to save an ucode with lower or equal level for APs
>
> No functional change is made in this patch. But following patch would
> handle "old ucode" and "mismatched ucode" separately.
>
> Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
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