Re: [PATCH 1/3] x86: fix access_ok() and valid_user_address() using wrong USER_PTR_MAX in modules

[Borislav Petkov]

On Wed, Nov 05, 2025 at 09:50:51PM +0100, Mateusz Guzik wrote:
> For unrelated reasons I disassembled kmem_cache_free and the following
> goodies popped up:
> sub    0x18e033f(%rip),%rax        # ffffffff82f944d0 <page_offset_base>
> [..]
> add    0x18e031d(%rip),%rax        # ffffffff82f944c0 <vmemmap_base>
> [..]
> mov    0x2189e19(%rip),%rax        # ffffffff8383e010 <__pi_phys_base>
> 
> These are definitely worthwhile to get rid of.

Says which semi-respectable benchmark?

If none, why bother?

-- 
Regards/Gruss,
    Boris.

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