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| author | Maxim Levitsky | 2021-11-11 12:06:04 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2021-12-10 09:47:18 +0100 |
| commit | fd2ddd168935690056a42b0ffe8f2480d8537751 (patch) | |
| tree | f7cf4de41f3071ff8b82bd110ef47b42482b1f9b /accel/kvm/kvm-all.c | |
| parent | gdbstub, kvm: let KVM report supported singlestep flags (diff) | |
| download | qemu-fd2ddd168935690056a42b0ffe8f2480d8537751.tar.gz qemu-fd2ddd168935690056a42b0ffe8f2480d8537751.tar.xz qemu-fd2ddd168935690056a42b0ffe8f2480d8537751.zip | |
kvm: add support for KVM_GUESTDBG_BLOCKIRQ
Use the KVM_GUESTDBG_BLOCKIRQ debug flag if supported.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
[Extracted from Maxim's patch into a separate commit. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211111110604.207376-6-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel/kvm/kvm-all.c')
| -rw-r--r-- | accel/kvm/kvm-all.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 2f5597572a..0e66ebb497 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -61,6 +61,10 @@ #endif #define PAGE_SIZE qemu_real_host_page_size +#ifndef KVM_GUESTDBG_BLOCKIRQ +#define KVM_GUESTDBG_BLOCKIRQ 0 +#endif + //#define DEBUG_KVM #ifdef DEBUG_KVM @@ -2574,6 +2578,15 @@ static int kvm_init(MachineState *ms) kvm_sstep_flags = 0; if (kvm_has_guest_debug) { kvm_sstep_flags = SSTEP_ENABLE; + +#if defined KVM_CAP_SET_GUEST_DEBUG2 + int guest_debug_flags = + kvm_check_extension(s, KVM_CAP_SET_GUEST_DEBUG2); + + if (guest_debug_flags & KVM_GUESTDBG_BLOCKIRQ) { + kvm_sstep_flags |= SSTEP_NOIRQ; + } +#endif } kvm_state = s; @@ -3205,6 +3218,10 @@ int kvm_update_guest_debug(CPUState *cpu, unsigned long reinject_trap) if (cpu->singlestep_enabled) { data.dbg.control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_SINGLESTEP; + + if (cpu->singlestep_enabled & SSTEP_NOIRQ) { + data.dbg.control |= KVM_GUESTDBG_BLOCKIRQ; + } } kvm_arch_update_guest_debug(cpu, &data.dbg); |