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Message-Id: <20200331190000.659614-3-peterx@redhat.com>
Date: Tue, 31 Mar 2020 14:59:48 -0400
From: Peter Xu <peterx@...hat.com>
To: linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc: Kevin Tian <kevin.tian@...el.com>,
"Michael S . Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Christophe de Dinechin <dinechin@...hat.com>,
Yan Zhao <yan.y.zhao@...el.com>,
Alex Williamson <alex.williamson@...hat.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
"Dr . David Alan Gilbert" <dgilbert@...hat.com>, peterx@...hat.com
Subject: [PATCH v8 02/14] KVM: Cache as_id in kvm_memory_slot
Cache the address space ID just like the slot ID. It will be used in
order to fill in the dirty ring entries.
Suggested-by: Paolo Bonzini <pbonzini@...hat.com>
Suggested-by: Sean Christopherson <sean.j.christopherson@...el.com>
Signed-off-by: Peter Xu <peterx@...hat.com>
---
include/linux/kvm_host.h | 1 +
virt/kvm/kvm_main.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f6a1905da9bf..515570116b60 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -346,6 +346,7 @@ struct kvm_memory_slot {
unsigned long userspace_addr;
u32 flags;
short id;
+ u16 as_id;
};
static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f744bc603c53..c04612726e85 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1243,6 +1243,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (!mem->memory_size)
return kvm_delete_memslot(kvm, mem, &old, as_id);
+ new.as_id = as_id;
new.id = id;
new.base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
new.npages = mem->memory_size >> PAGE_SHIFT;
--
2.24.1
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