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5a169bf04c
No functional change; just reserve the feature bit for now so that VMMs can start to implement it. This will allow the host to indicate that MSI emulation supports 15-bit destination IDs, allowing up to 32768 CPUs without interrupt remapping. cf. https://patchwork.kernel.org/patch/11816693/ for qemu Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <4cd59bed05f4b7410d3d1ffd1e997ab53683874d.camel@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_ASM_X86_KVM_PARA_H
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#define _UAPI_ASM_X86_KVM_PARA_H
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#include <linux/types.h>
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/* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It
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* should be used to determine that a VM is running under KVM.
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*/
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#define KVM_CPUID_SIGNATURE 0x40000000
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/* This CPUID returns two feature bitmaps in eax, edx. Before enabling
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* a particular paravirtualization, the appropriate feature bit should
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* be checked in eax. The performance hint feature bit should be checked
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* in edx.
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*/
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#define KVM_CPUID_FEATURES 0x40000001
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#define KVM_FEATURE_CLOCKSOURCE 0
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#define KVM_FEATURE_NOP_IO_DELAY 1
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#define KVM_FEATURE_MMU_OP 2
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/* This indicates that the new set of kvmclock msrs
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* are available. The use of 0x11 and 0x12 is deprecated
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*/
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#define KVM_FEATURE_CLOCKSOURCE2 3
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#define KVM_FEATURE_ASYNC_PF 4
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#define KVM_FEATURE_STEAL_TIME 5
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#define KVM_FEATURE_PV_EOI 6
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#define KVM_FEATURE_PV_UNHALT 7
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#define KVM_FEATURE_PV_TLB_FLUSH 9
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#define KVM_FEATURE_ASYNC_PF_VMEXIT 10
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#define KVM_FEATURE_PV_SEND_IPI 11
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#define KVM_FEATURE_POLL_CONTROL 12
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#define KVM_FEATURE_PV_SCHED_YIELD 13
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#define KVM_FEATURE_ASYNC_PF_INT 14
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#define KVM_FEATURE_MSI_EXT_DEST_ID 15
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#define KVM_HINTS_REALTIME 0
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/* The last 8 bits are used to indicate how to interpret the flags field
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* in pvclock structure. If no bits are set, all flags are ignored.
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*/
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#define KVM_FEATURE_CLOCKSOURCE_STABLE_BIT 24
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#define MSR_KVM_WALL_CLOCK 0x11
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#define MSR_KVM_SYSTEM_TIME 0x12
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#define KVM_MSR_ENABLED 1
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/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
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#define MSR_KVM_WALL_CLOCK_NEW 0x4b564d00
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#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01
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#define MSR_KVM_ASYNC_PF_EN 0x4b564d02
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#define MSR_KVM_STEAL_TIME 0x4b564d03
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#define MSR_KVM_PV_EOI_EN 0x4b564d04
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#define MSR_KVM_POLL_CONTROL 0x4b564d05
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#define MSR_KVM_ASYNC_PF_INT 0x4b564d06
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#define MSR_KVM_ASYNC_PF_ACK 0x4b564d07
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struct kvm_steal_time {
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__u64 steal;
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__u32 version;
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__u32 flags;
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__u8 preempted;
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__u8 u8_pad[3];
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__u32 pad[11];
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};
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#define KVM_VCPU_PREEMPTED (1 << 0)
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#define KVM_VCPU_FLUSH_TLB (1 << 1)
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#define KVM_CLOCK_PAIRING_WALLCLOCK 0
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struct kvm_clock_pairing {
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__s64 sec;
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__s64 nsec;
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__u64 tsc;
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__u32 flags;
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__u32 pad[9];
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};
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#define KVM_STEAL_ALIGNMENT_BITS 5
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#define KVM_STEAL_VALID_BITS ((-1ULL << (KVM_STEAL_ALIGNMENT_BITS + 1)))
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#define KVM_STEAL_RESERVED_MASK (((1 << KVM_STEAL_ALIGNMENT_BITS) - 1 ) << 1)
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#define KVM_MAX_MMU_OP_BATCH 32
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#define KVM_ASYNC_PF_ENABLED (1 << 0)
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#define KVM_ASYNC_PF_SEND_ALWAYS (1 << 1)
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#define KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT (1 << 2)
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#define KVM_ASYNC_PF_DELIVERY_AS_INT (1 << 3)
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/* MSR_KVM_ASYNC_PF_INT */
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#define KVM_ASYNC_PF_VEC_MASK GENMASK(7, 0)
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/* Operations for KVM_HC_MMU_OP */
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#define KVM_MMU_OP_WRITE_PTE 1
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#define KVM_MMU_OP_FLUSH_TLB 2
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#define KVM_MMU_OP_RELEASE_PT 3
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/* Payload for KVM_HC_MMU_OP */
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struct kvm_mmu_op_header {
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__u32 op;
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__u32 pad;
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};
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struct kvm_mmu_op_write_pte {
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struct kvm_mmu_op_header header;
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__u64 pte_phys;
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__u64 pte_val;
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};
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struct kvm_mmu_op_flush_tlb {
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struct kvm_mmu_op_header header;
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};
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struct kvm_mmu_op_release_pt {
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struct kvm_mmu_op_header header;
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__u64 pt_phys;
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};
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#define KVM_PV_REASON_PAGE_NOT_PRESENT 1
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#define KVM_PV_REASON_PAGE_READY 2
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struct kvm_vcpu_pv_apf_data {
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/* Used for 'page not present' events delivered via #PF */
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__u32 flags;
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/* Used for 'page ready' events delivered via interrupt notification */
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__u32 token;
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__u8 pad[56];
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__u32 enabled;
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};
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#define KVM_PV_EOI_BIT 0
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#define KVM_PV_EOI_MASK (0x1 << KVM_PV_EOI_BIT)
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#define KVM_PV_EOI_ENABLED KVM_PV_EOI_MASK
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#define KVM_PV_EOI_DISABLED 0x0
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#endif /* _UAPI_ASM_X86_KVM_PARA_H */
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