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| author | Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> | 2021-11-22 12:18:44 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-02-08 14:57:04 +0000 |
| commit | 100b4f092f878dc379f1fcef9ce567c25dee3473 (patch) | |
| tree | 94812b659483a3d9daf59f9bc0d0e70d3784ccab /arch/arm64/include | |
| parent | 3248136b3637e1671e4fa46e32e2122f9ec4bc3d (diff) | |
| download | linux-100b4f092f878dc379f1fcef9ce567c25dee3473.tar.gz | |
KVM: arm64: Make active_vmids invalid on vCPU schedule out
Like ASID allocator, we copy the active_vmids into the
reserved_vmids on a rollover. But it's unlikely that
every CPU will have a vCPU as current task and we may
end up unnecessarily reserving the VMID space.
Hence, set active_vmids to an invalid one when scheduling
out a vCPU.
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211122121844.867-5-shameerali.kolothum.thodi@huawei.com
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 47aeed22e2ad..305ea13c4fd0 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -694,6 +694,7 @@ extern unsigned int kvm_arm_vmid_bits; int kvm_arm_vmid_alloc_init(void); void kvm_arm_vmid_alloc_free(void); void kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid); +void kvm_arm_vmid_clear_active(void); static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch) { |