Oliver Upton c268f204f7 KVM: arm64: nv: Punt stage-2 recycling to a vCPU request ... Currently, when a nested MMU is repurposed for some other MMU context, KVM unmaps everything during vcpu_load() while holding the MMU lock for write. This is quite a performance bottleneck for large nested VMs, as all vCPU scheduling will spin until the unmap completes. Start punting the MMU cleanup to a vCPU request, where it is then possible to periodically release the MMU lock and CPU in the presence of contention. Ensure that no vCPU winds up using a stale MMU by tracking the pending unmap on the S2 MMU itself and requesting an unmap on every vCPU that finds it. Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Link: https://lore.kernel.org/r/20241007233028.2236133-4-oliver.upton@linux.dev Signed-off-by: Marc Zyngier <maz@kernel.org>		2024-10-08 10:40:27 +01:00
..
hyp	KVM: arm64: Constrain the host to the maximum shared SVE VL with pKVM	2024-10-01 15:25:23 +01:00
vgic	KVM: arm64: Unregister redistributor for failed vCPU creation	2024-10-08 10:40:27 +01:00
.gitignore	KVM: arm64: Generate hyp_constants.h for the host	2021-12-06 08:37:03 +00:00
arch_timer.c	KVM: arm64: Fix typos	2024-02-24 09:13:33 +00:00
arm.c	KVM: arm64: nv: Punt stage-2 recycling to a vCPU request	2024-10-08 10:40:27 +01:00
at.c	KVM: arm64: nv: Add support for FEAT_ATS1A	2024-08-30 12:04:20 +01:00
debug.c	KVM: arm64: debug: fix kernel-doc warnings	2024-02-01 20:25:41 +00:00
emulate-nested.c	Merge branch kvm-arm64/nv-at-pan into kvmarm-master/next	2024-09-12 08:37:47 +01:00
fpsimd.c	KVM: arm64: Add save/restore support for FPMR	2024-08-27 07:59:27 +01:00
guest.c	KVM: arm64: Disallow copying MTE to guest memory while KVM is dirty logging	2024-08-13 19:29:17 +01:00
handle_exit.c	Merge branch kvm-arm64/nv-sve into kvmarm/next	2024-07-14 00:27:06 +00:00
hypercalls.c	KVM: arm64: Use kvm_has_feat() to check if FEAT_SSBS is advertised to the guest	2024-08-25 17:48:44 +01:00
inject_fault.c	KVM: arm64: Fix typos	2024-02-24 09:13:33 +00:00
Kconfig	Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next	2024-09-12 08:38:02 +01:00
Makefile	Merge branch kvm-arm64/s2-ptdump into kvmarm-master/next	2024-09-12 08:38:02 +01:00
mmio.c	KVM: arm64: Force injection of a data abort on NISV MMIO exit	2024-05-01 16:48:15 +01:00
mmu.c	KVM: arm64: nv: Do not block when unmapping stage-2 if disallowed	2024-10-08 10:40:27 +01:00
nested.c	KVM: arm64: nv: Punt stage-2 recycling to a vCPU request	2024-10-08 10:40:27 +01:00
pauth.c	KVM: arm64: nv: Work around lack of pauth support in old toolchains	2024-04-23 19:27:11 +01:00
pkvm.c	KVM: arm64: Prevent kmemleak from accessing .hyp.data	2024-05-01 16:48:14 +01:00
pmu-emul.c	KVM: arm64: Refine PMU defines for number of counters	2024-08-16 13:09:12 +01:00
pmu.c	perf: arm_pmuv3: Add support for Armv9.4 PMU instruction counter	2024-08-16 13:09:12 +01:00
psci.c	Merge branch kvm-arm64/smccc-filtering into kvmarm-master/next	2023-04-21 09:44:32 +01:00
ptdump.c	KVM: arm64: Register ptdump with debugfs on guest creation	2024-09-10 21:32:51 +01:00
pvtime.c	KVM: MMU: Make the definition of 'INVALID_GPA' common	2023-01-19 21:48:38 +00:00
reset.c	KVM: arm64: nv: Support multiple nested Stage-2 mmu structures	2024-06-19 08:13:49 +00:00
stacktrace.c	arm64: stacktrace: track hyp stacks in unwinder's address space	2022-09-09 12:30:08 +01:00
sys_regs.c	KVM: arm64: nv: Do not block when unmapping stage-2 if disallowed	2024-10-08 10:40:27 +01:00
sys_regs.h	Merge branch kvm-arm64/visibility-cleanups into kvmarm-master/next	2024-09-12 08:38:17 +01:00
trace_arm.h	KVM: arm64: Add tracepoint for MMIO accesses where ISV==0	2023-10-30 20:17:22 +00:00
trace_handle_exit.h
trace.h
trng.c
va_layout.c	arm64: alternatives: kvm: prepare for cap changes	2022-09-16 17:15:02 +01:00
vgic-sys-reg-v3.c	KVM: arm64: vgic-v3: Convert userspace accessors over to FIELD_GET/FIELD_PREP	2022-07-17 11:55:33 +01:00
vmid.c	KVM: arm64: Reload stage-2 for VMID change on VHE	2023-10-20 17:52:01 +00:00