Sean Christopherson 8f973a9f75 KVM: Don't set Accessed/Dirty bits for ZERO_PAGE ... [ Upstream commit a1040b0d42 ] Don't set Accessed/Dirty bits for a struct page with PG_reserved set, i.e. don't set A/D bits for the ZERO_PAGE. The ZERO_PAGE (or pages depending on the architecture) should obviously never be written, and similarly there's no point in marking it accessed as the page will never be swapped out or reclaimed. The comment in page-flags.h is quite clear that PG_reserved pages should be managed only by their owner, and strictly following that mandate also simplifies KVM's logic. Fixes: 7df003c852 ("KVM: fix overflow of zero page refcount with ksm running") Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20220429010416.2788472-4-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-08-17 14:41:37 +02:00
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Kconfig	KVM: compat: riscv: Prevent KVM_COMPAT from being selected	2022-03-11 19:02:15 +05:30
Makefile.kvm	KVM: Reinstate gfn_to_pfn_cache with invalidation support	2022-01-07 10:44:44 -05:00
async_pf.c	KVM: Add helpers to wake/query blocking vCPU	2021-12-08 04:24:54 -05:00
async_pf.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 504	2019-06-19 17:09:56 +02:00
binary_stats.c	KVM: stats: remove dead stores	2021-08-13 03:35:15 -04:00
coalesced_mmio.c	KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio	2021-07-14 12:17:56 -04:00
coalesced_mmio.h	…
dirty_ring.c	KVM: SPDX style and spelling fixes	2022-04-21 13:16:13 -04:00
eventfd.c	KVM: eventfd: Fix false positive RCU usage warning	2022-05-20 09:10:33 -04:00
irqchip.c	KVM/arm updates for 5.3	2019-07-11 15:14:16 +02:00
kvm_main.c	KVM: Don't set Accessed/Dirty bits for ZERO_PAGE	2022-08-17 14:41:37 +02:00
kvm_mm.h	KVM: SPDX style and spelling fixes	2022-04-21 13:16:13 -04:00
pfncache.c	KVM: Do not incorporate page offset into gfn=>pfn cache user address	2022-08-17 14:40:06 +02:00
vfio.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio.h	…