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Re: [Xen-devel] [PATCH v5 01/10] xen/arm64: Added handling of the trapped access to OSLSR register

Hi Julien,

On Tue, Jun 5, 2018 at 8:00 PM, Julien Grall <julien.grall@xxxxxxx> wrote:

On 05/06/18 18:24, Julien Grall wrote:
Hi Mirela,

On 01/06/18 14:17, Mirela Simonovic wrote:
Linux/dom0 accesses OSLSR register when saving CPU context during the
suspend procedure. Xen traps access to this register, but has no handling
for it. Consequently, Xen injects undef exception to linux, causing it to
crash. This patch adds handling of the trapped access to OSLSR as read
only as a fixed value.

Can you please mention that you introduced handle_ro_read_val() and rework handle_ro_raz()?

Signed-off-by: Mirela Simonovic <mirela.simonovic@xxxxxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>

The reviewed-by/acked-by tags should only be kept when there are minor changes in the code (and the reviewer is happy with them). This is very important for the former as the tag means the reviewer read your code and confirm this is correct.

As you change quite a bit the patch, those 2 tags should have been removed.

Stefano, are you still happy with the Reviewed-by?

Stefano mentioned on IRC he was happy with the reviewed-by kept.

I will go ahead with merging the series. For this patch, I will add the following in the commit message:

"For convenience, introduce a new helper handle_ro_read_val() based on handle_ro_raz() that will return a specified value on read and re-implement handle_ro_raz() based on the new helper".

Great, thanks!

Julien Grall

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