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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6affcbedca
kvm_skip_emulated_instruction calls both kvm_x86_ops->skip_emulated_instruction and kvm_vcpu_check_singlestep, skipping the emulated instruction and generating a trap if necessary. Replacing skip_emulated_instruction calls with kvm_skip_emulated_instruction is straightforward, except for: - ICEBP, which is already inside a trap, so avoid triggering another trap. - Instructions that can trigger exits to userspace, such as the IO insns, MOVs to CR8, and HALT. If kvm_skip_emulated_instruction does trigger a KVM_GUESTDBG_SINGLESTEP exit, and the handling code for IN/OUT/MOV CR8/HALT also triggers an exit to userspace, the latter will take precedence. The singlestep will be triggered again on the next instruction, which is the current behavior. - Task switch instructions which would require additional handling (e.g. the task switch bit) and are instead left alone. - Cases where VMLAUNCH/VMRESUME do not proceed to the next instruction, which do not trigger singlestep traps as mentioned previously. Signed-off-by: Kyle Huey <khuey@kylehuey.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| entry | ||
| events | ||
| ia32 | ||
| include | ||
| kernel | ||
| kvm | ||
| lguest | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| oprofile | ||
| pci | ||
| platform | ||
| power | ||
| purgatory | ||
| ras | ||
| realmode | ||
| tools | ||
| um | ||
| video | ||
| xen | ||
| .gitignore | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.cpu | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile_32.cpu | ||
| Makefile.um | ||