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Support GDB on AArch64 #4355

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wants to merge 7 commits into from
Closed

Support GDB on AArch64 #4355

wants to merge 7 commits into from

Commits on Aug 12, 2022

  1. vmm: Use temporary gdbstub_arch for test 

    This is only for test purpose before `gdbstub_arch` modification is
upstreamed.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 12, 2022
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  2. hypervisor: Update kvm-ioctls to main branch 

    Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 12, 2022
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  3. 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 12, 2022
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  4. 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 12, 2022
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  5. hypervisor: Enable gdb HW breakpoint on AArch64 

    Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 12, 2022
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  6. vmm: Enable GDB HW Watchpoint 

    This commit setup the skeleton of HW watchpoint support.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 12, 2022
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  7. hypervisor: Implement GDB HW Watchpoint on AArch64 

    Note: This is a temporary commit.
Now there is problem, still testing.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
    @michael2012z
    michael2012z committed Aug 12, 2022
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