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target/i386/mshv: Register MSRs with MSHV

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Build and register the guest vCPU's model-specific registers using
the MSHV interface.

Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
Link: https://lore.kernel.org/r/20250916164847.77883-20-magnuskulke@linux.microsoft.com
[mshv.h/mshv_int.h split. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Magnus Kulke
2025-10-08 19:17:31 +02:00
committed by Paolo Bonzini
parent 4fa04dd162
commit f38e2a63e5
5 changed files with 428 additions and 0 deletions
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include/system/mshv_int.h
+17
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@@ -14,6 +14,8 @@
#ifndef QEMU_MSHV_INT_H
#define QEMU_MSHV_INT_H
#define MSHV_MSR_ENTRIES_COUNT 64
typedef struct hyperv_message hv_message;
struct AccelCPUState {
@@ -102,6 +104,21 @@ typedef struct MshvMemoryRegion {
void mshv_set_phys_mem(MshvMemoryListener *mml, MemoryRegionSection *section,
bool add);
/* msr */
typedef struct MshvMsrEntry {
uint32_t index;
uint32_t reserved;
uint64_t data;
} MshvMsrEntry;
typedef struct MshvMsrEntries {
MshvMsrEntry entries[MSHV_MSR_ENTRIES_COUNT];
uint32_t nmsrs;
} MshvMsrEntries;
int mshv_configure_msr(const CPUState *cpu, const MshvMsrEntry *msrs,
size_t n_msrs);
/* interrupt */
void mshv_init_msicontrol(void);
int mshv_reserve_ioapic_msi_routes(int vm_fd);