Re: [RFC PATCH 10/34] x86: mm: carve out the generic compile-time folded pgtable case in effective_prot()

Dave Hansen <[email protected]>
Newsgroups org.kernel.vger.linux-arch,dev.linux.lists.loongarch,org.infradead.lists.kvm-riscv,org.infradead.lists.linux-riscv,org.kernel.vger.linux-csky,org.kernel.vger.linux-kernel,org.kernel.vger.linux-m68k,org.kernel.vger.linux-mips,org.kernel.vger.linux-openrisc,org.kvack.linux-mm
Message-ID <[email protected]> 
On 7/13/26 14:17, David Hildenbrand (Arm) wrote:
>> To me, the double READ_ONCE() is a non-issue.
> To other arch maintainers, it is!

Ahh, so it seems like Christophe in ppc32 land was looking at this more
like a regression that needed to get fixed.

Christophe, just out of curiosity, was this something that was causing
you practical problems like measurable performance regressions, or was
it really just insane code generation that seems unacceptably suboptimal?
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