From: Peter Xu <peterx@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Sean Christopherson <sean.j.christopherson@intel.com>,
Paolo Bonzini <pbonzini@redhat.com>,
linux-mips@vger.kernel.org, peterx@redhat.com,
Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: [PATCH RFC 4/4] KVM: MIPS: Define arch-specific kvm_flush_remote_tlbs()
Date: Fri, 7 Feb 2020 17:35:20 -0500 [thread overview]
Message-ID: <20200207223520.735523-5-peterx@redhat.com> (raw)
In-Reply-To: <20200207223520.735523-1-peterx@redhat.com>
Select HAVE_KVM_ARCH_TLB_FLUSH_ALL for MIPS to define its own
kvm_flush_remote_tlbs(). It's as simple as calling the
flush_shadow_all(kvm) hook. Then replace all the flush_shadow_all()
calls to use this KVM generic API to do TLB flush.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/mips/kvm/Kconfig | 1 +
arch/mips/kvm/mips.c | 22 ++++++++++------------
2 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/arch/mips/kvm/Kconfig b/arch/mips/kvm/Kconfig
index eac25aef21e0..8a06f660d39e 100644
--- a/arch/mips/kvm/Kconfig
+++ b/arch/mips/kvm/Kconfig
@@ -26,6 +26,7 @@ config KVM
select KVM_MMIO
select MMU_NOTIFIER
select SRCU
+ select HAVE_KVM_ARCH_TLB_FLUSH_ALL
---help---
Support for hosting Guest kernels.
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 1d5e7ffda746..518020b466bf 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -194,13 +194,16 @@ int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
return 0;
}
+void kvm_flush_remote_tlbs(struct kvm *kvm)
+{
+ kvm_mips_callbacks->flush_shadow_all(kvm);
+}
+
void kvm_arch_flush_shadow_all(struct kvm *kvm)
{
/* Flush whole GPA */
kvm_mips_flush_gpa_pt(kvm, 0, ~0);
-
- /* Let implementation do the rest */
- kvm_mips_callbacks->flush_shadow_all(kvm);
+ kvm_flush_remote_tlbs(kvm);
}
void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
@@ -215,8 +218,7 @@ void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
/* Flush slot from GPA */
kvm_mips_flush_gpa_pt(kvm, slot->base_gfn,
slot->base_gfn + slot->npages - 1);
- /* Let implementation do the rest */
- kvm_mips_callbacks->flush_shadow_all(kvm);
+ kvm_flush_remote_tlbs(kvm);
spin_unlock(&kvm->mmu_lock);
}
@@ -258,7 +260,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
new->base_gfn + new->npages - 1);
/* Let implementation do the rest */
if (needs_flush)
- kvm_mips_callbacks->flush_shadow_all(kvm);
+ kvm_flush_remote_tlbs(kvm);
spin_unlock(&kvm->mmu_lock);
}
}
@@ -1001,9 +1003,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
if (flush) {
slots = kvm_memslots(kvm);
memslot = id_to_memslot(slots, log->slot);
-
- /* Let implementation handle TLB/GVA invalidation */
- kvm_mips_callbacks->flush_shadow_all(kvm);
+ kvm_flush_remote_tlbs(kvm);
}
mutex_unlock(&kvm->slots_lock);
@@ -1024,9 +1024,7 @@ int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm, struct kvm_clear_dirty_log *lo
if (flush) {
slots = kvm_memslots(kvm);
memslot = id_to_memslot(slots, log->slot);
-
- /* Let implementation handle TLB/GVA invalidation */
- kvm_mips_callbacks->flush_shadow_all(kvm);
+ kvm_flush_remote_tlbs(kvm);
}
mutex_unlock(&kvm->slots_lock);
--
2.24.1
next prev parent reply other threads:[~2020-02-07 22:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-07 22:35 [PATCH RFC 0/4] KVM: MIPS: Provide arch-specific kvm_flush_remote_tlbs() Peter Xu
2020-02-07 22:35 ` [PATCH RFC 1/4] KVM: Provide kvm_flush_remote_tlbs_common() Peter Xu
2020-02-12 13:33 ` Paolo Bonzini
2020-02-07 22:35 ` [PATCH RFC 2/4] KVM: MIPS: Drop flush_shadow_memslot() callback Peter Xu
2020-02-07 22:35 ` [PATCH RFC 3/4] KVM: MIPS: Replace all the kvm_flush_remote_tlbs() references Peter Xu
2020-02-07 22:35 ` Peter Xu [this message]
2020-03-18 3:03 ` [PATCH RFC 4/4] KVM: MIPS: Define arch-specific kvm_flush_remote_tlbs() maobibo
2020-03-18 15:28 ` Peter Xu
2020-03-19 2:21 ` maobibo
2020-02-07 23:00 ` [PATCH RFC 0/4] KVM: MIPS: Provide " Peter Xu
2020-02-12 12:25 ` Paolo Bonzini
2020-02-12 16:30 ` Paul Burton
2020-02-12 16:40 ` Paolo Bonzini
2020-02-12 19:02 ` Philippe Mathieu-Daudé
2020-03-11 18:32 ` Peter Xu
2020-03-17 13:33 ` Paolo Bonzini
2020-03-17 14:18 ` Peter Xu
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