linux/arch/arm64
Catalin Marinas 3676f9ef54 arm64: Move PTE_PROT_NONE higher up
PTE_PROT_NONE means that a pte is present but does not have any
read/write attributes. However, setting the memory type like
pgprot_writecombine() is allowed and such bits overlap with
PTE_PROT_NONE. This causes mmap/munmap issues in drivers that change the
vma->vm_pg_prot on PROT_NONE mappings.

This patch reverts the PTE_FILE/PTE_PROT_NONE shift in commit
59911ca432 (ARM64: mm: Move PTE_PROT_NONE bit) and moves PTE_PROT_NONE
together with the other software bits.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Steve Capper <steve.capper@linaro.org>
Cc: <stable@vger.kernel.org> # 3.11+
2013-11-29 15:22:59 +00:00
..
boot arm64: dts: Reserve the memory used for secondary CPU release address 2013-11-25 16:44:04 +00:00
configs arm64: defconfig: Enable CONFIG_PREEMPT by default 2013-11-05 10:03:53 +00:00
include arm64: Move PTE_PROT_NONE higher up 2013-11-29 15:22:59 +00:00
kernel arm64: debug: make aarch32 bkpt checking endian clean 2013-11-28 18:01:29 +00:00
kvm Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
lib arm64: Treat the bitops index argument as an 'int' 2013-05-08 10:33:17 +01:00
mm DeviceTree updates for 3.13. This is a bit larger pull request than 2013-11-12 16:52:17 +09:00
xen xen/arm,arm64: enable SWIOTLB_XEN 2013-10-10 13:40:44 +00:00
Kconfig Features: 2013-11-15 13:34:37 +09:00
Kconfig.debug arm64: Remove duplicate DEBUG_STACK_USAGE config 2013-10-02 18:03:26 +01:00
Makefile arm64: big-endian: add big-endian support to top-level arch Makefile 2013-10-25 15:59:31 +01:00