diff options
| author | Alexander Potapenko <glider@google.com> | 2025-11-19 15:45:40 +0100 |
|---|---|---|
| committer | Alexander Potapenko <glider@google.com> | 2025-11-20 09:23:19 +0000 |
| commit | 5c74d2f73618084fe35322dbb04bf713f7d177f2 (patch) | |
| tree | 1c3b16cd8fa7e9a93adb462870551f6d99f04e72 /sys/linux/dev_kvm_amd64.txt | |
| parent | ec988b2fb6c4aada0b3afcd9739ad27ec64b8249 (diff) | |
executor: sys/linux: implement SYZOS_API_NESTED_VMRESUME
Provide the SYZOS API command to resume L2 execution after a VM exit,
using VMRESUME on Intel and VMRUN on AMD.
For testing purpose, implement basic handling of the INVD instruction:
- enable INVD interception on AMD (set all bits in VMCB 00Ch);
- map EXIT_REASON_INVD and VMEXIT_INVD into SYZOS_NESTED_EXIT_REASON_INVD;
- advance L2 RIP to skip to the next instruction.
While at it, perform minor refactorings of L2 exit reason handling.
sys/linux/test/amd64-syz_kvm_nested_vmresume tests the new command by
executing two instructions, INVD and HLT, in the nested VM.
Diffstat (limited to 'sys/linux/dev_kvm_amd64.txt')
| -rw-r--r-- | sys/linux/dev_kvm_amd64.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/linux/dev_kvm_amd64.txt b/sys/linux/dev_kvm_amd64.txt index cb116574d..d3dac2cf9 100644 --- a/sys/linux/dev_kvm_amd64.txt +++ b/sys/linux/dev_kvm_amd64.txt @@ -117,6 +117,7 @@ syzos_api_call$x86 [ nested_create_vm syzos_api$x86[301, syzos_api_vm_id] nested_load_code syzos_api$x86[302, syzos_api_nested_load_code] nested_vmlaunch syzos_api$x86[303, syzos_api_vm_id] + nested_vmresume syzos_api$x86[304, syzos_api_vm_id] ] [varlen] kvm_text_x86 [ |