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| author |   Marc Zyngier <maz@kernel.org> | 2021-04-13 15:35:58 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-04-13 15:35:58 +0100 |
| commit | ad569b70aa02ffba1e86411b79570cbe4e6c7bb8 (patch) | |
| tree | e7cb9d5b58e9421d7a5840fe97fcb2f740de216d /Documentation/virt | |
| parent | Merge branch 'kvm-arm64/memslot-fixes' into kvmarm-master/next (diff) | |
| parent | KVM: arm64: Fully zero the vcpu state on reset (diff) | |
| download | linux-dev-ad569b70aa02ffba1e86411b79570cbe4e6c7bb8.tar.xz linux-dev-ad569b70aa02ffba1e86411b79570cbe4e6c7bb8.zip | |
Merge branch 'kvm-arm64/misc-5.13' into kvmarm-master/next
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index 62ffcb2dafee..b38f77bb74ae 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -3115,6 +3115,18 @@ 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. |