On Mon, Mar 15, 2021 at 11:57:54AM -0500, madve...@linux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman"
>
> Apart from the task pt_regs, pt_regs is also created on the stack for other
> other cases:
>
> - EL1 exception. A pt_regs is created on the stack to save register
>
On 3/19/21 11:20 AM, Mark Brown wrote:
> On Fri, Mar 19, 2021 at 10:02:52AM -0500, Madhavan T. Venkataraman wrote:
>> On 3/19/21 9:40 AM, Madhavan T. Venkataraman wrote:
>
>>> Actually now I look again it's just not adding anything on EL2 entries
>>> at all, they use a separate set of macros wh
On Fri, Mar 19, 2021 at 10:02:52AM -0500, Madhavan T. Venkataraman wrote:
> On 3/19/21 9:40 AM, Madhavan T. Venkataraman wrote:
> > Actually now I look again it's just not adding anything on EL2 entries
> > at all, they use a separate set of macros which aren't updated - this
> > will only update
On 3/19/21 9:40 AM, Madhavan T. Venkataraman wrote:
>> Are you referring to ARMv8.1 VHE extension where the kernel can run
>> at EL2? Could you elaborate? I thought that EL2 was basically for
>> Hypervisors.
> KVM is the main case, yes - IIRC otherwise it's mainly error handlers
> but I might be
On 3/19/21 8:22 AM, Mark Brown wrote:
> On Thu, Mar 18, 2021 at 05:22:49PM -0500, Madhavan T. Venkataraman wrote:
>> On 3/18/21 12:40 PM, Mark Brown wrote:
>
>>> Unless I'm misreading what's going on here this is more trying to set a
>>> type for the stack as a whole than for a specific stack f
On Thu, Mar 18, 2021 at 05:22:49PM -0500, Madhavan T. Venkataraman wrote:
> On 3/18/21 12:40 PM, Mark Brown wrote:
> > Unless I'm misreading what's going on here this is more trying to set a
> > type for the stack as a whole than for a specific stack frame. I'm also
> > finding this a bit confusi
On 3/18/21 12:40 PM, Mark Brown wrote:
> On Mon, Mar 15, 2021 at 11:57:54AM -0500, madve...@linux.microsoft.com wrote:
>
>> To summarize, pt_regs->stackframe is used (or will be used) as a marker
>> frame in stack traces. To enable the unwinder to detect these frames, tag
>> each pt_regs->stack
On Mon, Mar 15, 2021 at 11:57:54AM -0500, madve...@linux.microsoft.com wrote:
> To summarize, pt_regs->stackframe is used (or will be used) as a marker
> frame in stack traces. To enable the unwinder to detect these frames, tag
> each pt_regs->stackframe with a type. To record the type, use the un
From: "Madhavan T. Venkataraman"
Apart from the task pt_regs, pt_regs is also created on the stack for other
other cases:
- EL1 exception. A pt_regs is created on the stack to save register
state. In addition, pt_regs->stackframe is set up for the
interrupted kernel f
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