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Diffstat (limited to 'Documentation/virt/kvm/api.rst')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 56c6fca6219f..94804c2f45ac 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -3116,6 +3116,18 @@ optional features it should have. This will cause a reset of the cpu registers to their initial values. If this is not called, KVM_RUN will return ENOEXEC for that vcpu. +The initial values are defined as: + - Processor state: + * AArch64: EL1h, D, A, I and F bits set. All other bits + are cleared. + * AArch32: SVC, A, I and F bits set. All other bits are + cleared. + - General Purpose registers, including PC and SP: set to 0 + - FPSIMD/NEON registers: set to 0 + - SVE registers: set to 0 + - System registers: Reset to their architecturally defined + values as for a warm reset to EL1 (resp. SVC) + Note that because some registers reflect machine topology, all vcpus should be created before this ioctl is invoked. @@ -3335,7 +3347,8 @@ The top 16 bits of the control field are architecture specific control flags which can include the following: - KVM_GUESTDBG_USE_SW_BP: using software breakpoints [x86, arm64] - - KVM_GUESTDBG_USE_HW_BP: using hardware breakpoints [x86, s390, arm64] + - KVM_GUESTDBG_USE_HW_BP: using hardware breakpoints [x86, s390] + - KVM_GUESTDBG_USE_HW: using hardware debug events [arm64] - KVM_GUESTDBG_INJECT_DB: inject DB type exception [x86] - KVM_GUESTDBG_INJECT_BP: inject BP type exception [x86] - KVM_GUESTDBG_EXIT_PENDING: trigger an immediate guest exit [s390] @@ -6869,3 +6882,12 @@ they will get passed on to user space. So user space still has to have an implementation for these despite the in kernel acceleration. This capability is always enabled. + +8.32 KVM_CAP_PTP_KVM +-------------------- + +:Architectures: arm64 + +This capability indicates that the KVM virtual PTP service is +supported in the host. A VMM can check whether the service is +available to the guest on migration. |