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From: Gavin Shan <gshan@redhat.com>
To: Jonathan Cameron <jonathan.cameron@huawei.com>
Cc: qemu-arm@nongnu.org, qemu-devel@nongnu.org, mst@redhat.com,
	imammedo@redhat.com, anisinha@redhat.com, gengdongjiu1@gmail.com,
	peter.maydell@linaro.org, pbonzini@redhat.com,
	mchehab+huawei@kernel.org, shan.gavin@gmail.com
Subject: Re: [PATCH RESEND v2 3/3] target/arm/kvm: Support multiple memory CPERs injection
Date: Mon, 3 Nov 2025 09:03:53 +1000	[thread overview]
Message-ID: <dd4749b3-f980-45c8-87df-b4ac4095e1b0@redhat.com> (raw)
In-Reply-To: <20251031101051.00006fa3@huawei.com>

On 10/31/25 8:10 PM, Jonathan Cameron wrote:
> On Tue,  7 Oct 2025 16:08:10 +1000
> Gavin Shan <gshan@redhat.com> wrote:
> 
>> In the combination of 64KB host and 4KB guest, a problematic host page
>> affects 16x guest pages. In this specific case, it's reasonable to
>> push 16 consecutive memory CPERs. Otherwise, QEMU can run into core
>> dump due to the current error can't be delivered as the previous error
>> isn't acknoledges. It's caused by the nature the host page can be
>> accessed in parallel due to the mismatched host and guest page sizes.
>>
>> Imporve push_ghes_memory_errors() to push 16x consecutive memory CPERs
>> for this specific case. The maximal error block size is bumped to 4KB,
>> providing enough storage space for those 16x memory CPERs.
>>
>> Signed-off-by: Gavin Shan <gshan@redhat.com>
> Subject to tests being added and the Docs update Mauro requested + follow
> on from earlier patch reviews, this looks good to me.
> 

Yes, the ACPI tables were forgotten to be patched in the last respin. I will
do in the next respin.

Thanks,
Gavin



      reply	other threads:[~2025-11-02 23:04 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-10-07  6:08 [PATCH RESEND v2 0/3] target/arm/kvm: Improve memory error handling Gavin Shan
2025-10-07  6:08 ` [PATCH RESEND v2 1/3] acpi/ghes: Extend acpi_ghes_memory_errors() to support multiple CPERs Gavin Shan
2025-10-31  9:58   ` Jonathan Cameron via
2025-10-31 10:08     ` Jonathan Cameron via
2025-11-02 22:45       ` Gavin Shan
2025-10-31 13:17   ` Igor Mammedov
2025-11-02 22:51     ` Gavin Shan
2025-10-07  6:08 ` [PATCH RESEND v2 2/3] kvm/arm/kvm: Introduce helper push_ghes_memory_errors() Gavin Shan
2025-10-31 10:09   ` Jonathan Cameron via
2025-11-02 23:39     ` Gavin Shan
2025-11-03  9:45       ` Igor Mammedov
2025-10-31 13:25   ` Igor Mammedov
2025-11-02 23:35     ` Gavin Shan
2025-10-07  6:08 ` [PATCH RESEND v2 3/3] target/arm/kvm: Support multiple memory CPERs injection Gavin Shan
2025-10-07 10:57   ` Mauro Carvalho Chehab
2025-10-08  3:57     ` Gavin Shan
2025-10-17 14:27   ` Igor Mammedov
2025-10-19  0:36     ` Gavin Shan
2025-10-31 13:55       ` Igor Mammedov
2025-11-02 23:02         ` Gavin Shan
2025-11-03  9:52           ` Igor Mammedov
2025-11-03 23:51             ` Gavin Shan
2025-11-06  7:57               ` Igor Mammedov
2025-11-06 21:43                 ` Gavin Shan
2025-11-04 12:21             ` Jonathan Cameron via
2025-11-05  0:40               ` Gavin Shan
2025-11-05  9:02                 ` Jonathan Cameron via
2025-11-07  5:11                   ` Gavin Shan
2025-10-31 10:10   ` Jonathan Cameron via
2025-11-02 23:03     ` Gavin Shan [this message]

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