On Fri, Aug 21, 2020 at 12:19:03PM +0200, pet...@infradead.org wrote:
> On Thu, Aug 20, 2020 at 04:28:28PM +0100, Daniel Thompson wrote:
>
> > Specifically I've entered the kdb in pretty much the simplest way
> > possible: a direct call to kgdb_breakpoint() from a task context. I
> > generate a ba
On Thu, Aug 20, 2020 at 04:28:28PM +0100, Daniel Thompson wrote:
> Specifically I've entered the kdb in pretty much the simplest way
> possible: a direct call to kgdb_breakpoint() from a task context. I
> generate a backtrace to illustrate this, just to give you a better
> understanding of what mi
On Thu, Aug 20, 2020 at 09:43:15AM -0700, Andy Lutomirski wrote:
> I’ve lost track of how many bugs QEMU and KVM have in this space.
> Let’s keep it as a warning, but a bug. But let’s get rid of the
> totally bogus TIF_SINGLESTEP manipulation.
OK, I've shuffled the series around to fix that orderi
On Thu, Aug 20, 2020 at 09:43:15AM -0700, Andy Lutomirski wrote:
>
>
> > On Aug 20, 2020, at 9:35 AM, pet...@infradead.org wrote:
> >
> > On Thu, Aug 20, 2020 at 11:17:29AM -0500, Josh Poimboeuf wrote:
> >> On Thu, Aug 20, 2020 at 05:21:11PM +0200, pet...@infradead.org wrote:
> >
> >>> qemu-gd
> On Aug 20, 2020, at 9:35 AM, pet...@infradead.org wrote:
>
> On Thu, Aug 20, 2020 at 11:17:29AM -0500, Josh Poimboeuf wrote:
>> On Thu, Aug 20, 2020 at 05:21:11PM +0200, pet...@infradead.org wrote:
>
>>> qemu-gdb stub should eat the event before it lands in the guest
>>
>> Are we sure abou
On Thu, Aug 20, 2020 at 11:17:29AM -0500, Josh Poimboeuf wrote:
> On Thu, Aug 20, 2020 at 05:21:11PM +0200, pet...@infradead.org wrote:
> > qemu-gdb stub should eat the event before it lands in the guest
>
> Are we sure about that? I triggered the warning just now, stepping
> through the debug h
On Thu, Aug 20, 2020 at 05:21:11PM +0200, pet...@infradead.org wrote:
> On Thu, Aug 20, 2020 at 10:16:59AM -0500, Josh Poimboeuf wrote:
> > On Thu, Aug 20, 2020 at 05:08:41PM +0200, pet...@infradead.org wrote:
> > > On Thu, Aug 20, 2020 at 10:45:12AM -0400, Brian Gerst wrote:
> > > > On Thu, Aug 20
On Thu, Aug 20, 2020 at 04:28:28PM +0100, Daniel Thompson wrote:
> On Thu, Aug 20, 2020 at 12:38:36PM +0200, Peter Zijlstra wrote:
> >
> > Signed-off-by: Peter Zijlstra (Intel)
> > ---
> > arch/x86/kernel/traps.c | 24
> > 1 file changed, 12 insertions(+), 12 deletions
On Thu, Aug 20, 2020 at 12:38:36PM +0200, Peter Zijlstra wrote:
>
> Signed-off-by: Peter Zijlstra (Intel)
> ---
> arch/x86/kernel/traps.c | 24
> 1 file changed, 12 insertions(+), 12 deletions(-)
>
> --- a/arch/x86/kernel/traps.c
> +++ b/arch/x86/kernel/traps.c
> @@ -
On Thu, Aug 20, 2020 at 10:16:59AM -0500, Josh Poimboeuf wrote:
> On Thu, Aug 20, 2020 at 05:08:41PM +0200, pet...@infradead.org wrote:
> > On Thu, Aug 20, 2020 at 10:45:12AM -0400, Brian Gerst wrote:
> > > On Thu, Aug 20, 2020 at 6:53 AM Peter Zijlstra
> > > wrote:
> > > >
> > > >
> > > > Signed
On Thu, Aug 20, 2020 at 05:08:41PM +0200, pet...@infradead.org wrote:
> On Thu, Aug 20, 2020 at 10:45:12AM -0400, Brian Gerst wrote:
> > On Thu, Aug 20, 2020 at 6:53 AM Peter Zijlstra wrote:
> > >
> > >
> > > Signed-off-by: Peter Zijlstra (Intel)
> > > ---
> > > arch/x86/kernel/traps.c | 24 ++
On Thu, Aug 20, 2020 at 10:45:12AM -0400, Brian Gerst wrote:
> On Thu, Aug 20, 2020 at 6:53 AM Peter Zijlstra wrote:
> >
> >
> > Signed-off-by: Peter Zijlstra (Intel)
> > ---
> > arch/x86/kernel/traps.c | 24
> > 1 file changed, 12 insertions(+), 12 deletions(-)
> >
>
On Thu, Aug 20, 2020 at 6:53 AM Peter Zijlstra wrote:
>
>
> Signed-off-by: Peter Zijlstra (Intel)
> ---
> arch/x86/kernel/traps.c | 24
> 1 file changed, 12 insertions(+), 12 deletions(-)
>
> --- a/arch/x86/kernel/traps.c
> +++ b/arch/x86/kernel/traps.c
> @@ -820,18 +8
Signed-off-by: Peter Zijlstra (Intel)
---
arch/x86/kernel/traps.c | 24
1 file changed, 12 insertions(+), 12 deletions(-)
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -820,18 +820,6 @@ static void handle_debug(struct pt_regs
goto out
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