Will Deacon d96cc49bff arm64: SW PAN: Update saved ttbr0 value on enter_lazy_tlb ... enter_lazy_tlb is called when a kernel thread rides on the back of another mm, due to a context switch or an explicit call to unuse_mm where a call to switch_mm is elided. In these cases, it's important to keep the saved ttbr value up to date with the active mm, otherwise we can end up with a stale value which points to a potentially freed page table. This patch implements enter_lazy_tlb for arm64, so that the saved ttbr0 is kept up-to-date with the active mm for kernel threads. Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Vinayak Menon <vinmenon@codeaurora.org> Cc: <stable@vger.kernel.org> Fixes: 39bc88e5e3 ("arm64: Disable TTBR0_EL1 during normal kernel execution") Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Reported-by: Vinayak Menon <vinmenon@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>		2017-12-06 18:28:10 +00:00
..
boot	ARM: Device-tree updates for 4.15	2017-11-16 15:48:26 -08:00
configs
crypto
include	arm64: SW PAN: Update saved ttbr0 value on enter_lazy_tlb	2017-12-06 18:28:10 +00:00
kernel	arm64: fpsimd: Abstract out binding of task's fpsimd context to the cpu.	2017-12-06 18:28:10 +00:00
kvm	GICv4 Support for KVM/ARM for v4.15	2017-11-17 13:20:01 +01:00
lib	arm64 updates for 4.15	2017-11-15 10:56:56 -08:00
mm	arm64: context: Fix comments and remove pointless smp_wmb()	2017-12-01 13:05:08 +00:00
net
xen
Kconfig	arm64/mm/kasan: don't use vmemmap_populate() to initialize shadow	2017-11-15 18:21:05 -08:00
Kconfig.debug
Kconfig.platforms	ARM: SoC driver updates for v4.15	2017-11-16 16:05:01 -08:00
Makefile	arm64: ftrace: emit ftrace-mod.o contents through code	2017-12-01 13:04:59 +00:00