[PATCH] arm64: uprobes: Optimize cache flushes for xol slot
Oleg Nesterov
oleg at redhat.com
Thu Sep 26 09:08:24 PDT 2024
On 09/26, Liao, Chang wrote:
>
> 在 2024/9/23 18:52, Oleg Nesterov 写道:
> > On 09/23, Will Deacon wrote:
> >>
> >> However, we should use __GFP_ZERO anyway
> >> because I don't think it's a good idea to map an uninitialised page into
> >> userspace.
> >
> > Agreed, and imo this even needs a separate "fix info leak" patch.
>
> Do you mean to fill the entire page with CPU specific illegal instructions
> in this patch?
Hmm. Why?? No... OK, I'll write the changelog and send the trivial patch
in a minute.
Oleg.
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