On 26.08.20 20:53, Thomas Gleixner wrote:
On Wed, Aug 26 2020 at 20:30, Thomas Gleixner wrote:
And it does not solve the issue that we abuse orig_ax which Andy
mentioned.
Ha! After staring some more, it's not required at all, which is the most
elegant solution.
The vector check is
On Wed, Aug 26 2020 at 20:30, Thomas Gleixner wrote:
> And it does not solve the issue that we abuse orig_ax which Andy
> mentioned.
Ha! After staring some more, it's not required at all, which is the most
elegant solution.
The vector check is pointless in that condition because there is never a
On Wed, Aug 26 2020 at 18:33, Alexander Graf wrote:
> On 26.08.20 16:27, Thomas Gleixner wrote:
>> The below nasty hack cures it, but I hate it with a passion. I'll look
>> deeper for a sane variant.
>
> An alternative (that doesn't make the code easier to read, but would fix
> the issue at hand)
> Am 26.08.2020 um 20:03 schrieb Andy Lutomirski :
>
>> On Wed, Aug 26, 2020 at 10:47 AM Thomas Gleixner wrote:
>>
>> Andy,
>>
>>> On Wed, Aug 26 2020 at 09:13, Andy Lutomirski wrote:
>>> On Wed, Aug 26, 2020 at 7:27 AM Thomas Gleixner wrote:
The below nasty hack cures it, but I hate
On Wed, Aug 26, 2020 at 10:47 AM Thomas Gleixner wrote:
>
> Andy,
>
> On Wed, Aug 26 2020 at 09:13, Andy Lutomirski wrote:
> > On Wed, Aug 26, 2020 at 7:27 AM Thomas Gleixner wrote:
> >> The below nasty hack cures it, but I hate it with a passion. I'll look
> >> deeper for a sane variant.
> >>
>
Andy,
On Wed, Aug 26 2020 at 09:13, Andy Lutomirski wrote:
> On Wed, Aug 26, 2020 at 7:27 AM Thomas Gleixner wrote:
>> The below nasty hack cures it, but I hate it with a passion. I'll look
>> deeper for a sane variant.
>>
> Fundamentally, the way we overload orig_ax is problematic. I have a
>
On 26.08.20 16:27, Thomas Gleixner wrote:
On Wed, Aug 26 2020 at 13:53, Alexander Graf wrote:
Commit 633260fa143 ("x86/irq: Convey vector as argument and not in ptregs")
changed the handover logic of the vector identifier from ~vector in orig_ax
to purely register based. Unfortunately, this
On Wed, Aug 26, 2020 at 7:27 AM Thomas Gleixner wrote:
>
> On Wed, Aug 26 2020 at 13:53, Alexander Graf wrote:
> > Commit 633260fa143 ("x86/irq: Convey vector as argument and not in ptregs")
> > changed the handover logic of the vector identifier from ~vector in orig_ax
> > to purely register
On Wed, Aug 26 2020 at 13:53, Alexander Graf wrote:
> Commit 633260fa143 ("x86/irq: Convey vector as argument and not in ptregs")
> changed the handover logic of the vector identifier from ~vector in orig_ax
> to purely register based. Unfortunately, this field has another consumer
> in the APIC
On 26.08.20 15:22, Josh Poimboeuf wrote:
On Wed, Aug 26, 2020 at 01:53:57PM +0200, Alexander Graf wrote:
-.macro idtentry_body cfunc has_error_code:req
+.macro idtentry_body cfunc has_error_code:req preserve_error_code:req
callerror_entry
UNWIND_HINT_REGS
@@ -328,7 +328,9
On Wed, Aug 26, 2020 at 01:53:57PM +0200, Alexander Graf wrote:
> -.macro idtentry_body cfunc has_error_code:req
> +.macro idtentry_body cfunc has_error_code:req preserve_error_code:req
>
> callerror_entry
> UNWIND_HINT_REGS
> @@ -328,7 +328,9 @@ SYM_CODE_END(ret_from_fork)
>
>
Commit 633260fa143 ("x86/irq: Convey vector as argument and not in ptregs")
changed the handover logic of the vector identifier from ~vector in orig_ax
to purely register based. Unfortunately, this field has another consumer
in the APIC code which the commit did not touch. The net result was that
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