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

Will Deacon will.deacon at arm.com
Thu Jun 26 01:46:26 PDT 2014

On Thu, Jun 26, 2014 at 01:45:51AM +0100, Kim Phillips wrote:
> From: Kim Phillips <kim.phillips at 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 at linaro.org>
> Acked-by: Christoffer Dall <christoffer.dall at 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 at arm.com>


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