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Re: [PATCH 1/2] arm/p2m: Rework p2m_init()
- To: Julien Grall <julien@xxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
- Date: Mon, 17 Oct 2022 21:51:02 +0000
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- Thread-topic: [PATCH 1/2] arm/p2m: Rework p2m_init()
On 17/10/2022 21:24, Julien Grall wrote:
> Hi Andrew,
>
> On 17/10/2022 20:12, Andrew Cooper wrote:
>> p2m_init() is mostly trivial initialisation, but has two failable
>> operations
>> which are on either side of the backpointer trigger for teardown to take
>> actions.
>>
>> p2m_free_vmid() is idempotent with a failed p2m_alloc_vmid(), so
>> rearrange
>> p2m_init() to perform all trivial setup, then set the backpointer, then
>> perform all failable setup.
>>
>> This will simplify a future bugfix which needs to add a third failabile
>
> Typo: s/failabile/fallible?
Yes, fixed.
>
>> operation.
>>
>> No practical change.
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>
> Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>
Thanks.
~Andrew
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