mirror of
https://github.com/libvirt/libvirt.git
synced 2026-10-02 12:20:06 -05:00
Daniel P. Berrangé
62d14ba496
Querying existence of the 'tdx-guest' type merely tells us whether
QEMU has been compiled with TDX support, not whether it is usable
on the host. Thus QEMU was incorrectly reporting
<tdx supported='yes'/>
...
<launchSecurity supported='yes'>
<enum name='sectype'>
<value>tdx</value>
</enum>
</launchSecurity>
on every platform with new enough QEMU.
Unfortunately an earlier patch for a 'query-tdx-capabilities' QMP
command in QEMU was dropped, so there is no way to ask QEMU whether
it can launch a TDX guest. Libvirt must directly query the KVM
device and ask for supported VM types.
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "virhostcpu.h"
|
|
#include "virhostmem.h"
|
|
|
|
#if WITH_QEMU
|
|
# include "virmock.h"
|
|
# include "qemu/qemu_capabilities.h"
|
|
#endif
|
|
|
|
int
|
|
virHostCPUGetKVMMaxVCPUs(void)
|
|
{
|
|
return INT_MAX;
|
|
}
|
|
|
|
unsigned int
|
|
virHostCPUGetMicrocodeVersion(virArch hostArch G_GNUC_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
virHostCPUGetPhysAddrSize(const virArch hostArch,
|
|
unsigned int *size)
|
|
{
|
|
if (ARCH_IS_S390(hostArch))
|
|
*size = 0;
|
|
else
|
|
*size = 64;
|
|
return 0;
|
|
}
|
|
|
|
#if WITH_QEMU
|
|
bool
|
|
virQEMUCapsKVMSupportsVMTypeTDX(void)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static bool (*real_virQEMUCapsGetKVMSupportsSecureGuest)(virQEMUCaps *qemuCaps);
|
|
|
|
bool
|
|
virQEMUCapsGetKVMSupportsSecureGuest(virQEMUCaps *qemuCaps)
|
|
{
|
|
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_MACHINE_CONFIDENTAL_GUEST_SUPPORT) &&
|
|
(virQEMUCapsGet(qemuCaps, QEMU_CAPS_S390_PV_GUEST) ||
|
|
virQEMUCapsGet(qemuCaps, QEMU_CAPS_TDX_GUEST)))
|
|
return true;
|
|
|
|
if (!real_virQEMUCapsGetKVMSupportsSecureGuest)
|
|
VIR_MOCK_REAL_INIT(virQEMUCapsGetKVMSupportsSecureGuest);
|
|
|
|
return real_virQEMUCapsGetKVMSupportsSecureGuest(qemuCaps);
|
|
}
|
|
#endif
|
|
|
|
int
|
|
virHostMemGetTHPSize(unsigned long long *size)
|
|
{
|
|
/* Pretend Transparent Huge Page size is 2MiB. */
|
|
*size = 2048;
|
|
return 0;
|
|
}
|