Re: [Xen-devel] [edk2-devel] [PATCH 03/11] OvmfPkg/XenBusDxe: Rework watch events reception

[Laszlo Ersek <lersek@xxxxxxxxxx>]

On 09/13/19 16:50, Anthony PERARD wrote:
> This patch rework the reception of xenstore watch event to avoid
> allocation.
> 
> Instead of queuing watch events, we simply mark a XENSTORE_WATCH as
> "triggered". We don't need to know how many time we received the
> event, only that it happened. That avoid to allocate a
> XENSTORE_MESSAGE for every watch events.
> 
> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2190
> Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> ---
>  OvmfPkg/XenBusDxe/XenStore.c | 125 ++++++++++-------------------------
>  1 file changed, 35 insertions(+), 90 deletions(-)

This looks a bit more complex than what I can allocate time for now, so
I'll trust you on it -- it only modifies XenStore.c. Feedback from other
reviewers is encouraged.

Acked-by: Laszlo Ersek <lersek@xxxxxxxxxx>

Thanks
Laszlo

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