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Re: [Xen-devel] [PATCH RFC for-4.13 02/10] xen/arm64: head: Check if an SError is pending when receiving a vSError
- To: Julien Grall <julien.grall@xxxxxxx>
- From: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Date: Fri, 27 Sep 2019 11:35:41 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, "andrii.anisov@xxxxxxxxx" <andrii.anisov@xxxxxxxxx>
- Delivery-date: Fri, 27 Sep 2019 11:35:45 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHVdJmSJrxE3Qm/3EG8DE9qdUJxVqc/Zi0A
- Thread-topic: [PATCH RFC for-4.13 02/10] xen/arm64: head: Check if an SError is pending when receiving a vSError
Julien Grall writes:
> At the moment, when we receive an SError exception from the guest, we
> don't check if there are any other pending. For hardening the code, we
> should ensure any pending SError are accounted to the guest before
> executing any code with SError unmasked.
>
> The recently introduced macro 'guest_vector' could used to generate the
> two vectors and therefore take advantage of any change required in the
> future.
>
> Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
Reviewed-by: Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>
--
Volodymyr Babchuk at EPAM
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