On 1/28/21 7:20 PM, Peter Zijlstra wrote:
>
> Tom reported that one of the GDB test-cases failed, and Boris bisected
> it to commit:
>
> d53d9bc0cf78 ("x86/debug: Change thread.debugreg6 to thread.virtual_dr6")
>
> The debugging session led us to commit:
>
> 6c0aca288e72 ("x86: Ignore trap
On 28/01/2021 18:20, Peter Zijlstra wrote:
> --- a/arch/x86/kernel/hw_breakpoint.c
> +++ b/arch/x86/kernel/hw_breakpoint.c
> @@ -496,9 +496,32 @@ static int hw_breakpoint_handler(struct
> dr6_p = (unsigned long *)ERR_PTR(args->err);
> dr6 = *dr6_p;
>
> - /* If it's a single step,
Tom reported that one of the GDB test-cases failed, and Boris bisected
it to commit:
d53d9bc0cf78 ("x86/debug: Change thread.debugreg6 to thread.virtual_dr6")
The debugging session led us to commit:
6c0aca288e72 ("x86: Ignore trap bits on single step exceptions")
Which describes a nice
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