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Enable GDB support on AArch64 #4519

Merged
merged 5 commits into from Aug 21, 2022
Merged

Enable GDB support on AArch64 #4519

merged 5 commits into from Aug 21, 2022

Commits on Aug 20, 2022

  1. Cargo.lock: Update kvm-ioctls 

    Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 20, 2022
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  2. vmm: Enable gdbstub on AArch64 

    The `gva_translate` function is still missing, it will be added with a
separate commit.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 20, 2022
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  3. vmm: Implement translate_gva on AArch64 

    On AArch64, `translate_gva` API is not provided by KVM. We implemented
it in VMM by walking through translation tables.

Address translation is big topic, here we only focus the scenario that
happens in VMM while debugging kernel. This `translate_gva`
implementation is restricted to:
 - Exception Level 1
 - Translate high address range only (kernel space)

This implementation supports following Arm-v8a features related to
address translation:
 - FEAT_LPA
 - FEAT_LVA
 - FEAT_LPA2

The implementation supports page sizes of 4KiB, 16KiB and 64KiB.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 20, 2022
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  4. hypervisor: Enable gdb HW breakpoint on AArch64 

    Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 20, 2022
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  5. vmm: Extend seccomp rules for GDB 

    Add 'KVM_SET_GUEST_DEBUG' ioctl to seccomp filter rules.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 20, 2022
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