lkml.org 
[lkml]   [2022]   [May]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v6 026/104] KVM: TDX: Make KVM_CAP_SET_IDENTITY_MAP_ADDR unsupported for TDX
Date
From: Isaku Yamahata <isaku.yamahata@intel.com>

Because TDX doesn't support KVM_SET_IDENTITY_MAP_ADDR. Return
KVM_CAP_SET_IDENTITY_MAP_ADDR as unsupported.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/kvm/x86.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 77e83e20180a..fd282e5efec1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4236,7 +4236,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_IOEVENTFD_NO_LENGTH:
case KVM_CAP_PIT2:
case KVM_CAP_PIT_STATE2:
- case KVM_CAP_SET_IDENTITY_MAP_ADDR:
case KVM_CAP_VCPU_EVENTS:
case KVM_CAP_HYPERV:
case KVM_CAP_HYPERV_VAPIC:
@@ -4389,6 +4388,12 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_DISABLE_QUIRKS2:
r = KVM_X86_VALID_QUIRKS;
break;
+ case KVM_CAP_SET_IDENTITY_MAP_ADDR:
+ if (kvm && kvm->arch.vm_type == KVM_X86_TDX_VM)
+ r = 0;
+ else
+ r = 1;
+ break;
case KVM_CAP_VM_TYPES:
r = BIT(KVM_X86_DEFAULT_VM);
if (static_call(kvm_x86_is_vm_type_supported)(KVM_X86_TDX_VM))
--
2.25.1
\
 
 \ /
  Last update: 2022-05-05 20:16    [W:0.623 / U:0.048 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site