On 30/04/2018 20:43, Punit Agrawal wrote:
> Hi Laurent,
>
> I am looking to add support for speculative page fault handling to
> arm64 (effectively porting this patch) and had a few questions.
> Apologies if I've missed an obvious explanation for my queries. I'm
> jumping in bit late to the discus
Hi Laurent,
I am looking to add support for speculative page fault handling to
arm64 (effectively porting this patch) and had a few questions.
Apologies if I've missed an obvious explanation for my queries. I'm
jumping in bit late to the discussion.
On Tue, Apr 17, 2018 at 3:33 PM, Laurent Dufour
From: Peter Zijlstra
Try a speculative fault before acquiring mmap_sem, if it returns with
VM_FAULT_RETRY continue with the mmap_sem acquisition and do the
traditional fault.
Signed-off-by: Peter Zijlstra (Intel)
[Clearing of FAULT_FLAG_ALLOW_RETRY is now done in
handle_speculative_fault()]
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