| author | Kim Phillips <kim.phillips@linaro.org> | |
| Thu, 26 Jun 2014 00:45:51 +0000 (01:45 +0100) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Mon, 29 Jun 2015 19:25:37 +0000 (12:25 -0700) | ||
| commit | e16bb584be4a6134fe9eb476d358a0aa2fbb5626 | |
| tree | c9855756919932f5b45579d2f43c65ee583f4e85 | tree | snapshot (tar.xz tar.gz zip) |
| parent | 0aa06a1a546ecada733a2596df60e0665d8ab778 | commit | diff |
ARM: KVM: user_mem_abort: support stage 2 MMIO page mapping
commit b88657674d39fc2127d62d0de9ca142e166443c8 upstream.
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>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b88657674d39fc2127d62d0de9ca142e166443c8 upstream.
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>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| arch/arm/kvm/mmu.c | diff | blob | history |