On Tue, May 05, 2026 at 09:50:24PM +0300, Doru Blânzeanu wrote: > Define the `hv_vp_register_page` structure that the linux kernel uses > to allow access to vcpu registers. > > This structure is going to be used in later patches to access vcpu > registers. > > Signed-off-by: Doru Blânzeanu <[email protected]> > --- > include/hw/hyperv/hvgdk.h | 2 + > include/hw/hyperv/hvhdk.h | 105 ++++++++++++++++++++++++++++++++++++++ > 2 files changed, 107 insertions(+) > > diff --git a/include/hw/hyperv/hvgdk.h b/include/hw/hyperv/hvgdk.h > index 71161f477c..e4be861716 100644 > --- a/include/hw/hyperv/hvgdk.h > +++ b/include/hw/hyperv/hvgdk.h > @@ -9,6 +9,8 @@ > #ifndef HW_HYPERV_HVGDK_H > #define HW_HYPERV_HVGDK_H > > +#include "hvgdk_mini.h" > + > #define HVGDK_H_VERSION (25125) > > enum hv_unimplemented_msr_action { > diff --git a/include/hw/hyperv/hvhdk.h b/include/hw/hyperv/hvhdk.h > index 41af743847..4a3b543893 100644 > --- a/include/hw/hyperv/hvhdk.h > +++ b/include/hw/hyperv/hvhdk.h > @@ -9,7 +9,11 @@ > #ifndef HW_HYPERV_HVHDK_H > #define HW_HYPERV_HVHDK_H > > +#include "hvgdk.h" > +#include "hvhdk_mini.h" > + > #define HV_PARTITION_SYNTHETIC_PROCESSOR_FEATURES_BANKS 1 > +#define HV_VP_REGISTER_PAGE_MAX_VECTOR_COUNT 7 > > struct hv_input_set_partition_property { > uint64_t partition_id; > @@ -246,4 +250,105 @@ typedef struct hv_input_register_intercept_result { > union hv_register_intercept_result_parameters parameters; > } QEMU_PACKED hv_input_register_intercept_result; > > +/* Flags for dirty mask of hv_vp_register_page */ > +enum hv_x64_register_class_type { > + HV_X64_REGISTER_CLASS_GENERAL = 0, > + HV_X64_REGISTER_CLASS_IP = 1, > + HV_X64_REGISTER_CLASS_XMM = 2, > + HV_X64_REGISTER_CLASS_SEGMENT = 3, > + HV_X64_REGISTER_CLASS_FLAGS = 4, > +}; > + > +union hv_vp_register_page_interrupt_vectors { > + uint64_t as_uint64; > + struct { > + uint8_t vector_count; > + uint8_t vector[HV_VP_REGISTER_PAGE_MAX_VECTOR_COUNT]; > + }; > +}; > + > +struct hv_vp_register_page { > + uint16_t version; > + uint8_t isvalid; > + uint8_t rsvdz; > + uint32_t dirty; > + > + union { > + struct { > + /* General purpose registers (HV_X64_REGISTER_CLASS_GENERAL) */ > + union { > + struct { > + uint64_t rax; > + uint64_t rcx; > + uint64_t rdx; > + uint64_t rbx; > + uint64_t rsp; > + uint64_t rbp; > + uint64_t rsi; > + uint64_t rdi; > + uint64_t r8; > + uint64_t r9; > + uint64_t r10; > + uint64_t r11; > + uint64_t r12; > + uint64_t r13; > + uint64_t r14; > + uint64_t r15; > + } QEMU_PACKED; > + > + uint64_t gp_registers[16]; > + }; > + /* Instruction pointer (HV_X64_REGISTER_CLASS_IP) */ > + uint64_t rip; > + /* Flags (HV_X64_REGISTER_CLASS_FLAGS) */ > + uint64_t rflags; > + } QEMU_PACKED; > + > + uint64_t registers[18]; > + }; > + uint8_t reserved[8]; > + /* Volatile XMM registers (HV_X64_REGISTER_CLASS_XMM) */ > + union { > + struct { > + struct hv_u128 xmm0; > + struct hv_u128 xmm1; > + struct hv_u128 xmm2; > + struct hv_u128 xmm3; > + struct hv_u128 xmm4; > + struct hv_u128 xmm5; > + } QEMU_PACKED; > + > + struct hv_u128 xmm_registers[6]; > + }; > + /* Segment registers (HV_X64_REGISTER_CLASS_SEGMENT) */ > + union { > + struct { > + struct hv_x64_segment_register es; > + struct hv_x64_segment_register cs; > + struct hv_x64_segment_register ss; > + struct hv_x64_segment_register ds; > + struct hv_x64_segment_register fs; > + struct hv_x64_segment_register gs; > + } QEMU_PACKED; > + > + struct hv_x64_segment_register segment_registers[6]; > + }; > + /* Misc. control registers (cannot be set via this interface) */ > + uint64_t cr0; > + uint64_t cr3; > + uint64_t cr4; > + uint64_t cr8; > + uint64_t efer; > + uint64_t dr7; > + union hv_x64_pending_interruption_register pending_interruption; > + union hv_x64_interrupt_state_register interrupt_state; > + uint64_t instruction_emulation_hints; > + uint64_t xfem; > + > + uint8_t reserved1[0x100]; > + > + /* Interrupts injected as part of HvCallDispatchVp. */ > + union hv_vp_register_page_interrupt_vectors interrupt_vectors; > +} QEMU_PACKED; > + > #endif /* HW_HYPERV_HVHDK_H */ > -- > 2.53.0
Reviewed-by: Magnus Kulke <[email protected]>
