xemu/target/i386/kvm/kvm-stub.c
Vitaly Kuznetsov 071ce4b03b i386: expand Hyper-V features during CPU feature expansion time
To make Hyper-V features appear in e.g. QMP query-cpu-model-expansion we
need to expand and set the corresponding CPUID leaves early. Modify
x86_cpu_get_supported_feature_word() to call newly intoduced Hyper-V
specific kvm_hv_get_supported_cpuid() instead of
kvm_arch_get_supported_cpuid(). We can't use kvm_arch_get_supported_cpuid()
as Hyper-V specific CPUID leaves intersect with KVM's.

Note, early expansion will only happen when KVM supports system wide
KVM_GET_SUPPORTED_HV_CPUID ioctl (KVM_CAP_SYS_HYPERV_CPUID).

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210608120817.1325125-6-vkuznets@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-07-13 09:13:29 -04:00

47 lines
886 B
C

/*
* QEMU KVM x86 specific function stubs
*
* Copyright Linaro Limited 2012
*
* Author: Peter Maydell <peter.maydell@linaro.org>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "kvm_i386.h"
#ifndef __OPTIMIZE__
bool kvm_has_smm(void)
{
return 1;
}
bool kvm_enable_x2apic(void)
{
return false;
}
/* This function is only called inside conditionals which we
* rely on the compiler to optimize out when CONFIG_KVM is not
* defined.
*/
uint32_t kvm_arch_get_supported_cpuid(KVMState *env, uint32_t function,
uint32_t index, int reg)
{
abort();
}
#endif
bool kvm_hv_vpindex_settable(void)
{
return false;
}
bool kvm_hyperv_expand_features(X86CPU *cpu, Error **errp)
{
abort();
}