On Mon, 12 Apr 2021 17:41:01 +0800, Jisheng Zhang wrote:
> If instruction being single stepped caused a page fault, the kprobes
> is cancelled to let the page fault handler continue as a normal page
> fault. But the local irqflags are disabled so cpu will restore pstate
> with DAIF masked. After
On Mon, 12 Apr 2021 22:11:44 +0900
Masami Hiramatsu wrote:
> Hi Jisheng,
>
> On Mon, 12 Apr 2021 17:41:01 +0800
> Jisheng Zhang wrote:
>
> > If instruction being single stepped caused a page fault, the kprobes
> > is cancelled to let the page fault handler continue as a normal page
> > fault.
Hi Jisheng,
On Mon, 12 Apr 2021 17:41:01 +0800
Jisheng Zhang wrote:
> If instruction being single stepped caused a page fault, the kprobes
> is cancelled to let the page fault handler continue as a normal page
> fault. But the local irqflags are disabled so cpu will restore pstate
> with DAIF
If instruction being single stepped caused a page fault, the kprobes
is cancelled to let the page fault handler continue as a normal page
fault. But the local irqflags are disabled so cpu will restore pstate
with DAIF masked. After pagefault is serviced, the kprobes is
triggerred again, we
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