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Re: [PATCH] target/arm/kvm: Retry KVM_CREATE_VM call if it fails EINTR
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From: |
Marc Zyngier |
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Subject: |
Re: [PATCH] target/arm/kvm: Retry KVM_CREATE_VM call if it fails EINTR |
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Date: |
Mon, 26 Sep 2022 10:26:28 -0400 |
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User-agent: |
Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (Gojō) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) |
On Mon, 26 Sep 2022 09:36:44 -0400,
Peter Maydell <peter.maydell@linaro.org> wrote:
>
> Occasionally the KVM_CREATE_VM ioctl can return EINTR, even though
> there is no pending signal to be taken. In commit 94ccff13382055
> we added a retry-on-EINTR loop to the KVM_CREATE_VM call in the
> generic KVM code. Adopt the same approach for the use of the
> ioctl in the Arm-specific KVM code (where we use it to create a
> scratch VM for probing for various things).
>
> For more information, see the mailing list thread:
> https://lore.kernel.org/qemu-devel/8735e0s1zw.wl-maz@kernel.org/
>
> Reported-by: Vitaly Chikunov <vt@altlinux.org>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Marc Zyngier <maz@kernel.org>
M.
--
Without deviation from the norm, progress is not possible.