On 07/06/2021 18:07, Catalin Marinas wrote: > On Mon, Jun 07, 2021 at 12:08:10PM +0100, Steven Price wrote: >> From: Catalin Marinas <catalin.marinas@xxxxxxx> >> >> Currently, on an anonymous page fault, the kernel allocates a zeroed >> page and maps it in user space. If the mapping is tagged (PROT_MTE), >> set_pte_at() additionally clears the tags under a spinlock to avoid a >> race on the page->flags. In order to optimise the lock, clear the page >> tags on allocation in __alloc_zeroed_user_highpage() if the vma flags >> have VM_MTE set. >> >> Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> >> Signed-off-by: Steven Price <steven.price@xxxxxxx> > > I think you can drop this patch now that Peter's series has been queued > via the arm64 tree: > > https://lore.kernel.org/r/20210602235230.3928842-4-pcc@xxxxxxxxxx > Thanks for the heads up - I hadn't seen that land. I'll drop this patch from the next posting. Steve _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
