Catalin Marinas bc07c2c6e9 arm64: Introduce execute-only page access permissions ... The ARMv8 architecture allows execute-only user permissions by clearing the PTE_UXN and PTE_USER bits. The kernel, however, can still access such page, so execute-only page permission does not protect against read(2)/write(2) etc. accesses. Systems requiring such protection must implement/enable features like SECCOMP. This patch changes the arm64 __P100 and __S100 protection_map[] macros to the new __PAGE_EXECONLY attributes. A side effect is that pte_valid_user() no longer triggers for __PAGE_EXECONLY since PTE_USER isn't set. To work around this, the check is done on the PTE_NG bit via the pte_valid_ng() macro. VM_READ is also checked now for page faults. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2014-05-09 15:53:36 +01:00
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boot	arm64: Mark the Applied Micro X-Gene SATA controller as DMA coherent	2014-05-03 22:20:35 +01:00
configs	arm64: defconfig: Expand default enabled features	2014-02-07 17:17:28 +00:00
include	arm64: Introduce execute-only page access permissions	2014-05-09 15:53:36 +01:00
kernel	arm64: Expose ESR_EL1 information to user when SIGSEGV/SIGBUS	2014-05-09 15:47:49 +01:00
kvm	Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2014-04-02 14:50:10 -07:00
lib	arm64: atomics: fix use of acquire + release for full barrier semantics	2014-02-07 16:45:43 +00:00
mm	arm64: Introduce execute-only page access permissions	2014-05-09 15:53:36 +01:00
xen	xen/arm,arm64: enable SWIOTLB_XEN	2013-10-10 13:40:44 +00:00
Kconfig	arm64: Implement cache_line_size() based on CTR_EL0.CWG	2014-05-09 15:47:45 +01:00
Kconfig.debug	arm64: Add missing Kconfig for CONFIG_STRICT_DEVMEM	2014-04-07 17:33:13 +01:00
Makefile	arm64: big-endian: add big-endian support to top-level arch Makefile	2013-10-25 15:59:31 +01:00