mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-10 02:12:00 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915/gvt: Don't bother removing write-protection on to-be-deleted slot

Browse Source 
When handling a slot "flush", don't call back into KVM to drop write
protection for gfns in the slot.  Now that KVM rejects attempts to move
memory slots while KVMGT is attached, the only time a slot is "flushed"
is when it's being removed, i.e. the memslot and all its write-tracking
metadata is about to be deleted.

Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Link: https://lore.kernel.org/r/20230729013535.1070024-18-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2023-07-28 18:35:23 -07:00
committed by Paolo Bonzini
parent c70934e0ab
commit 2ee05a4c27
1 changed files with 1 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@@ -1630,14 +1630,8 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm,
for (i = 0; i < slot->npages; i++) {
gfn = slot->base_gfn + i;
if (kvmgt_gfn_is_write_protected(info, gfn)) {
write_lock(&kvm->mmu_lock);
kvm_slot_page_track_remove_page(kvm, slot, gfn,
KVM_PAGE_TRACK_WRITE);
write_unlock(&kvm->mmu_lock);
if (kvmgt_gfn_is_write_protected(info, gfn))
kvmgt_protect_table_del(info, gfn);
}
}
mutex_unlock(&info->vgpu_lock);
}