From: "Alex Bennée" <alex.bennee@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-devel@nongnu.org, "open list:ARM TCG CPUs" <qemu-arm@nongnu.org>
Subject: Re: [RFC PATCH] target/arm: fix user-mode emulation of ID_AA64MMFR0_EL1
Date: Mon, 28 Sep 2026 15:27:51 +0100 [thread overview]
Message-ID: <87mrt1a1so.fsf@draig.linaro.org> (raw)
In-Reply-To: <CAFEAcA8DLweguCk7-9prMKraPcYRC_Sf5WD_07Ke9cLi4R9-Zw@mail.gmail.com> (Peter Maydell's message of "Mon, 28 Sep 2026 15:02:43 +0100")
Peter Maydell <peter.maydell@linaro.org> writes:
> On Mon, 21 Sept 2026 at 15:29, Alex Bennée <alex.bennee@linaro.org> wrote:
>>
>> Since kernel commit b130a8f70cbbf9 (KVM: arm64: Check advertised
>> Stage-2 page size capability) the relevant Stage 2 have been pegged at
>> 1 f(4KB granule not supported at stage 2) by the kernel. As a result
>> the behaviour of the test differs when run on real HW compared to
>> under emulation:
>>
>> id_aa64mmfr0_el1 : 0x00000111ff000000
>> !!extra bits!! : 0x0000011100000000
>>
>> Update the test with a new helper to explicitly test for fixed bits
>> and update v8_user_idregs to match real systems.
>>
>> Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/4566
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>
> Why is this only an RFC? What would you like comments on? :-)
skill issue (or possibly my shell history). If your happy to take it
please do ;-)
>
> thanks
> -- PMM
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
next prev parent reply other threads:[~2026-09-28 14:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-21 14:29 [RFC PATCH] target/arm: fix user-mode emulation of ID_AA64MMFR0_EL1 Alex Bennée
2026-09-28 14:02 ` Peter Maydell
2026-09-28 14:27 ` Alex Bennée [this message]
2026-09-28 17:57 ` Peter Maydell
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