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KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2

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The previous KVM_CAP_MANUAL_DIRTY_LOG_PROTECT has some problem which
blocks the correct usage from userspace.  Obsolete the old one and
introduce a new capability bit for it.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu
2019-05-08 17:15:47 +08:00
committed by Paolo Bonzini
parent 53eac7a8f8
commit d7547c55cb
4 changed files with 17 additions and 11 deletions
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4
virt/kvm/kvm_main.c
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@@ -3110,7 +3110,7 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg)
case KVM_CAP_CHECK_EXTENSION_VM:
case KVM_CAP_ENABLE_CAP_VM:
#ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT
case KVM_CAP_MANUAL_DIRTY_LOG_PROTECT:
case KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2:
#endif
return 1;
#ifdef CONFIG_KVM_MMIO
@@ -3148,7 +3148,7 @@ static int kvm_vm_ioctl_enable_cap_generic(struct kvm *kvm,
{
switch (cap->cap) {
#ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT
case KVM_CAP_MANUAL_DIRTY_LOG_PROTECT:
case KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2:
if (cap->flags || (cap->args[0] & ~1))
return -EINVAL;
kvm->manual_dirty_log_protect = cap->args[0];