From: Jan Beulich <jbeulich@suse.com>
To: Sergey Dyasli <sergey.dyasli@citrix.com>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Roger Pau Monné" <roger.pau@citrix.com>, "Wei Liu" <wl@xen.org>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v2 3/3] x86/ucode: load microcode earlier on boot CPU
Date: Tue, 20 Dec 2022 15:07:23 +0100 [thread overview]
Message-ID: <4dbd1218-8fe9-c9f5-d530-fcd92c86dd5b@suse.com> (raw)
In-Reply-To: <20221219144533.19836-4-sergey.dyasli@citrix.com>
On 19.12.2022 15:45, Sergey Dyasli wrote:
> Call early_microcode_init() straight after multiboot modules become
> accessible. Modify it to load the ucode directly from the blob bypassing
> populating microcode_cache because xmalloc is still not available at
> that point during Xen boot.
>
> Introduce early_microcode_init_cache() for populating microcode_cache.
> It needs to rescan the modules in order to find the new virtual address
> of the ucode blob because it changes during the boot process, e.g.
> from 0x00000000010802fc to 0xffff83204dac52fc.
>
> While at it, drop alternative_vcall() from early_microcode_init() since
> it's not useful in an __init fuction.
>
> Signed-off-by: Sergey Dyasli <sergey.dyasli@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
next prev parent reply other threads:[~2022-12-20 14:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-19 14:45 [PATCH v2 0/3] x86: load microcode earlier on boot CPU Sergey Dyasli
2022-12-19 14:45 ` [PATCH v2 1/3] xen/multiboot: add proper struct definitions to typedefs Sergey Dyasli
2022-12-20 13:56 ` Jan Beulich
2022-12-19 14:45 ` [PATCH v2 2/3] x86/ucode: allow cpu_request_microcode() to skip memory allocation Sergey Dyasli
2022-12-20 14:00 ` Jan Beulich
2022-12-19 14:45 ` [PATCH v2 3/3] x86/ucode: load microcode earlier on boot CPU Sergey Dyasli
2022-12-19 16:57 ` Julien Grall
2022-12-19 17:33 ` Andrew Cooper
2022-12-19 18:12 ` Julien Grall
2022-12-20 14:07 ` Jan Beulich [this message]
2022-12-20 14:50 ` Andrew Cooper
2022-12-20 15:18 ` Jan Beulich
2022-12-20 19:32 ` Andrew Cooper
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