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Peter Anvin" , Johannes Weiner , Michal Hocko , qi.zheng@linux.dev, Shakeel Butt , Kairui Song , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , Anshuman Khandual , Yang Shi , chaitanyas.prakash@arm.com, Ard Biesheuvel , guoren , yang.li85200@gmail.com, Alexander Viro , Dinh Nguyen , "schuster.simon@siemens-energy.com" , Vivian Wang , junhui.liu@pigmoral.tech, Muchun Song , "Vishal Moola (Oracle)" , Nam Cao , Pavel Machek , djbw@kernel.org, yu-cheng.yu@intel.com, Baolu Lu , Jonathan Cameron , Coiby Xu , Andreas Larsson , "Liam R. Howlett" , "Vlastimil Babka (SUSE)" , Suren Baghdasaryan , Michal Hocko , Geert Uytterhoeven , Stafford Horne , Jonas Bonn , Stefan Kristiansson Subject: Re: [RFC PATCH 02/34] ARM: mm: make 2-level pgd_t a scalar Message-ID: References: <20260713135614.1618183-1-yeoreum.yun@arm.com> <20260713135614.1618183-3-yeoreum.yun@arm.com> <4a0f9161-961e-47f9-8672-9a06e52fefea@app.fastmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4a0f9161-961e-47f9-8672-9a06e52fefea@app.fastmail.com> X-Rspam-User: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 1ED1A100008 X-Stat-Signature: s1rf5fj7xz7e13ddsppqg3e5suqak1yz X-HE-Tag: 1784199435-959511 X-HE-Meta: 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 EcKDOcWt oiVtKnutHEW9TVBC2TauygaYIhQ2GzIwvL+e8QViU2K4xI3onq4mcRvLEOYfZlf0eTypzwFRQzIne8/ZK/Z0u/97JWQhiyNydF4NXD34H35VNKbXGNz5b17LpZpNZHl8esXpKRbSXuIvbdrOOSyjhoeM+ARjSHhVbUX+NgojB2HSV0Vzp4m3fYk6sUxuMVJ1Yi2hvIRC5d7xCJaKc5qdtAtR7NZli2FkmeJeaniYDS7iCri6/6yR8Tr7D86Aq0zgFBTe4Tr6V6ltP4rOFLhHNN0OKS1N7kn5iwg/4WyXxBxy/IOmgcVGInFPRjbwbJjJYEqRFc4QpIWLpSFDoI3ynUHXGtpfxo4++j/M08LU8Lmc/zYhT0/s9MS1x9CF86DvKfZJ1qii81bsSnAM= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, > On Mon, Jul 13, 2026, at 15:55, Yeoreum Yun wrote: > > > typedef pteval_t pte_t; > > typedef pmdval_t pmd_t; > > -typedef pmdval_t pgd_t[2]; > > +typedef pgdval_t pgd_t; > > typedef pteval_t pgprot_t; > > > > Just noticed one more issue here, I think this will break these > two macros that now access four entries instead of two: > > #define copy_pmd(pmdpd,pmdps) \ > do { \ > pmdpd[0] = pmdps[0]; \ > pmdpd[1] = pmdps[1]; \ > flush_pmd_entry(pmdpd); \ > } while (0) > > #define pmd_clear(pmdp) \ > do { \ > pmdp[0] = __pmd(0); \ > pmdp[1] = __pmd(0); \ > clean_pmd_entry(pmdp); \ > } while (0) > > Arnd I don't this this change wouldn't affect for this macros since both of them still uses *pmd_t* which is u32. So it still only changes tow entries. -- Sincerely, Yeoreum Yun