Paolo Bonzini f3b65bbaed KVM: delete .change_pte MMU notifier callback ... The .change_pte() MMU notifier callback was intended as an optimization. The original point of it was that KSM could tell KVM to flip its secondary PTE to a new location without having to first zap it. At the time there was also an .invalidate_page() callback; both of them were *not* bracketed by calls to mmu_notifier_invalidate_range_{start,end}(), and .invalidate_page() also doubled as a fallback implementation of .change_pte(). Later on, however, both callbacks were changed to occur within an invalidate_range_start/end() block. In the case of .change_pte(), commit 6bdb913f0a ("mm: wrap calls to set_pte_at_notify with invalidate_range_start and invalidate_range_end", 2012-10-09) did so to remove the fallback from .invalidate_page() to .change_pte() and allow sleepable .invalidate_page() hooks. This however made KVM's usage of the .change_pte() callback completely moot, because KVM unmaps the sPTEs during .invalidate_range_start() and therefore .change_pte() has no hope of finding a sPTE to change. Drop the generic KVM code that dispatches to kvm_set_spte_gfn(), as well as all the architecture specific implementations. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Anup Patel <anup@brainfault.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Bibo Mao <maobibo@loongson.cn> Message-ID: <20240405115815.3226315-2-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2024-04-11 13:18:27 -04:00
..
emulate.c	MIPS: Fix typos	2024-01-08 10:39:12 +01:00
entry.c	MIPS: kvm/entry: Use GPR number macros	2024-02-20 12:41:52 +01:00
fpu.S	MIPS: Always use -Wa,-msoft-float and eliminate GAS_HAS_SET_HARDFLOAT	2023-01-26 12:41:16 +09:00
hypcall.c	KVM: MIPS: Implement HYPCALL emulation	2017-03-28 14:53:33 +01:00
interrupt.c	MIPS: Remove KVM_TE support	2021-03-10 15:18:48 +01:00
interrupt.h	MIPS: Remove KVM_TE support	2021-03-10 15:18:48 +01:00
Kconfig	Merge branch 'kvm-kconfig'	2024-02-08 08:47:51 -05:00
loongson_ipi.c	KVM: mips: Use kvm_get_vcpu() instead of open-coded access	2021-12-08 04:24:13 -05:00
Makefile	KVM: MIPS: Hardcode callbacks to hardware virtualization extensions	2022-12-29 15:41:12 -05:00
mips.c	KVM: Move kvm_arch_flush_remote_tlbs_memslot() to common code	2023-08-17 09:40:35 +01:00
mmu.c	KVM: delete .change_pte MMU notifier callback	2024-04-11 13:18:27 -04:00
msa.S	MIPS: KVM: Add base guest MSA support	2015-03-27 21:25:19 +00:00
stats.c	MIPS: kvm: Fix build error with KVM_MIPS_DEBUG_COP0_COUNTERS enabled	2023-07-07 14:43:01 +02:00
tlb.c	MIPS: fix typos in comments	2022-05-04 22:22:59 +02:00
trace.h	MIPS: KVM: Fix NULL pointer dereference	2023-07-03 16:06:19 +02:00
vz.c	MIPS: KVM: Fix NULL pointer dereference	2023-07-03 16:06:19 +02:00