From: Coiby Xu <coxu@redhat.com>
To: Baoquan He <bhe@redhat.com>
Cc: kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org,
Dave Young <dyoung@redhat.com>, Will Deacon <will@kernel.org>,
"Eric W . Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH v4 0/3] use more system keyrings to verify arm64 kdump kernel image signature
Date: Mon, 21 Mar 2022 16:28:07 +0800 [thread overview]
Message-ID: <20220321082807.eq7g3qgkbtdw6sre@Rk> (raw)
In-Reply-To: <Yjf+GwHNHxuUvFrf@MiWiFi-R3L-srv>
Hi Baoquan,
On Mon, Mar 21, 2022 at 12:24:59PM +0800, Baoquan He wrote:
>Hi Coiby,
>
>On 03/18/22 at 05:40pm, Coiby Xu wrote:
>> This patch set allows arm64 to use more system keyrings to verify kdump
>> kernel image signature by making the existing code in x64 public.
>
>Could you tell more about why arm64 need use more system keyrings to
>verify kdump kernel iamge signature?
>
>What problem have you encountered to make you want to do this?
Thanks for raising this question! Currently, a problem faced by arm64 is
if a kernel image is signed by a MOK key, this kernel image would be
rejected with the error "Lockdown: kexec: kexec of unsigned images is
restricted; see man kernel_lockdown.7". I'll improve the cover letter
and the 3rd commit message to have this info.
>
>Thanks
>Baoquan
>
--
Best regards,
Coiby
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next prev parent reply other threads:[~2022-03-21 8:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-18 9:40 [PATCH v4 0/3] use more system keyrings to verify arm64 kdump kernel image signature Coiby Xu
2022-03-18 9:40 ` [PATCH v4 1/3] kexec: clean up arch_kexec_kernel_verify_sig Coiby Xu
2022-03-21 4:21 ` Baoquan He
2022-03-22 2:59 ` Coiby Xu
2022-03-22 3:13 ` Baoquan He
2022-03-22 6:57 ` Coiby Xu
2022-03-18 9:41 ` [PATCH v4 2/3] kexec, KEYS: make the code in bzImage64_verify_sig generic Coiby Xu
2022-03-18 9:41 ` [PATCH v4 3/3] arm64: kexec_file: use more system keyrings to verify kernel image signature Coiby Xu
2022-03-21 4:24 ` [PATCH v4 0/3] use more system keyrings to verify arm64 kdump " Baoquan He
2022-03-21 8:28 ` Coiby Xu [this message]
2022-03-21 8:35 ` Baoquan He
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