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SubjectRe: hv_hypercall_pg page permissios
On Tue, Jun 16, 2020 at 12:40:32PM +0200, Peter Zijlstra wrote:
> On Tue, Jun 16, 2020 at 12:33:13PM +0200, Christoph Hellwig wrote:
> > sorry, s/ftrace/kprobes/. See my updated branch here:
> >
> > http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/module_alloc-cleanup
>
> Ah the insn slot page, yes. Didn't you just loose VM_FLUSH_RESET_PERMS
> there?

Yes, we did. vmalloc_exec had it, but given that module_alloc didn't
allocate executable on x86 it didn't. I guess we should make sure it
is set by the low-level vmalloc code if exec permissions are set to
sort this mess out.

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