Shaokun Zhang 32bab0754d arm64: mm: remove page_mapping check in __sync_icache_dcache ... [ Upstream commit 20c27a4270 ] __sync_icache_dcache unconditionally skips the cache maintenance for anonymous pages, under the assumption that flushing is only required in the presence of D-side aliases [see 7249b79f6b ("arm64: Do not flush the D-cache for anonymous pages")]. Unfortunately, this breaks migration of anonymous pages holding self-modifying code, where userspace cannot be reasonably expected to reissue maintenance instructions in response to a migration. This patch fixes the problem by removing the broken page_mapping(page) check from the cache syncing code, otherwise we may end up fetching and executing stale instructions from the PoU. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: <stable@vger.kernel.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com>		2016-07-10 20:20:00 -04:00
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boot	- dts: mt8173: fix compatible string	2015-06-01 17:06:51 +02:00
configs	ARM: SoC 64-bit changes for v4.1	2015-04-22 09:23:58 -07:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2015-05-11 11:05:13 -07:00
include	arm64: Ensure pmd_present() returns false after pmd_mknotpresent()	2016-06-03 19:15:49 -04:00
kernel	arm64: replace read_lock to rcu lock in call_step_hook	2016-03-24 08:40:20 -04:00
kvm	kvm: arm64: Fix EC field in inject_abt64	2016-06-06 19:12:32 -04:00
lib	arm64: __clear_user: handle exceptions on strb	2014-11-13 15:21:26 +00:00
mm	arm64: mm: remove page_mapping check in __sync_icache_dcache	2016-07-10 20:20:00 -04:00
net	arm64: bpf: fix mod-by-zero case	2016-01-31 11:23:39 -08:00
xen	arm: xen: implement multicall hypercall support.	2014-04-24 13:09:46 +01:00
Kconfig	arm64: errata: add module build workaround for erratum #843419	2015-09-29 19:26:00 +02:00
Kconfig.debug	coresight: moving to new "hwtracing" directory	2015-04-03 16:17:04 +02:00
Makefile	arm64: errata: Add -mpc-relative-literal-loads to build flags	2016-04-18 08:51:10 -04:00