Re: [PATCH 2/2 v2] ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping

Will Deacon
2014-06-26T08:47:00Z

On Thu, Jun 26, 2014 at 01:45:51AM +0100, Kim Phillips wrote:
> From: Kim Phillips <kim.phillips@linaro.org>
>
> A userspace process can map device MMIO memory via VFIO or /dev/mem,
> e.g., for platform device passthrough support in QEMU.
>
> During early development, we found the PAGE_S2 memory type being used
> for MMIO mappings. This patch corrects that by using the more strongly
> ordered memory type for device MMIO mappings: PAGE_S2_DEVICE.
>
> Signed-off-by: Kim Phillips <kim.phillips@linaro.org>
> Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
> ---
> Hi, here's a v2, upon request:
>
> - rebased onto today's mainline ToT
> - mmu.o-build tested only (ToT build doesn't complete)
> - made commit text less terse
> - added Christoffer's ack

Thanks for reposting this so quickly!

Acked-by: Will Deacon <will.deacon@arm.com>

Will