Catalin Marinas b847415ce9 arm64: Fix the pte_hw_dirty() check when AF/DBM is enabled ... Commit 2f4b829c62 ("arm64: Add support for hardware updates of the access and dirty pte bits") introduced support for handling hardware updates of the access flag and dirty status. The PTE is automatically dirtied in hardware (if supported) by clearing the PTE_RDONLY bit when the PTE_DBM/PTE_WRITE bit is set. The pte_hw_dirty() macro was added to detect a hardware dirtied pte. The pte_dirty() macro checks for both software PTE_DIRTY and pte_hw_dirty(). Functions like pte_modify() clear the PTE_RDONLY bit since it is meant to be set in set_pte_at() when written to memory. In such cases, pte_hw_dirty() would return true even though such pte is clean. This patch changes pte_hw_dirty() to test the PTE_DBM/PTE_WRITE bit together with PTE_RDONLY. Fixes: 2f4b829c62 ("arm64: Add support for hardware updates of the access and dirty pte bits") Reported-by: Julien Grall <julien.grall@citrix.com> Tested-by: Julien Grall <julien.grall@citrix.com> Tested-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2015-09-14 12:28:31 +01:00
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boot	arm64 updates for 4.3:	2015-09-04 07:18:09 -07:00
configs	arm64: Enable Marvell Berlin SoC family in defconfig	2015-08-06 10:15:57 +02:00
crypto	crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag	2015-08-17 16:53:53 +08:00
include	arm64: Fix the pte_hw_dirty() check when AF/DBM is enabled	2015-09-14 12:28:31 +01:00
kernel	ARM:	2015-09-10 16:42:49 -07:00
kvm	ARM:	2015-09-10 16:42:49 -07:00
lib	arm64: atomics: prefetch the destination word for write prior to stxr	2015-07-27 15:28:53 +01:00
mm	arm64: dma-mapping: check whether cma area is initialized or not	2015-09-14 12:28:30 +01:00
net	arm64: bpf: fix endianness conversion bugs	2015-06-26 14:15:39 +01:00
xen	arm: xen: implement multicall hypercall support.	2014-04-24 13:09:46 +01:00
Kconfig	arm64 updates for 4.3:	2015-09-04 07:18:09 -07:00
Kconfig.debug	coresight: moving to new "hwtracing" directory	2015-04-03 16:17:04 +02:00
Kconfig.platforms	arm64: Enable Marvell Berlin SoC family in Kconfig	2015-08-06 10:15:01 +02:00
Makefile	arm64: atomics: patch in lse instructions when supported by the CPU	2015-07-27 15:28:50 +01:00