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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, Muhammad Usama Anjum X-Mailer: b4 0.16.0 X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 4E8B84000A X-Stat-Signature: 7nh9ukn18dxxo51ghcrz8b4sc6e6rtej X-HE-Tag: 1790098382-560042 X-HE-Meta: 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 AdQNeogS KgZNIo1HMrm/SST2i7NAXg7H9cuj/CmHlhN5bGSyY+FjQ5KQ6T/g5/WTE8agP6SP42ujlSFNsQr2O8ZDx3bhlJJ2SQ1/cpPm0mSDFQl5kGI6Krynm0yWFBplRJ1/GWCt6g91KOSvLoKLY+3MlfRGEYupkwdGgZVSR/kz8GnLERNo7IjNmMdRV+cbpj/bu2GztxJ2jil9I1hL+o0OxJiCwClic2s+pxSHnNN6Jt8icjmyawHZjrP38+io9d6Z3kC7nKCAJv3XRtsFbPMC0eLqxGUxMAPhaipCTuUG2HhnDM7DbYa6oeCYwugC8c5jnCcNx5HNYWYCxUCvfNQjdvsf+f3jYVIa4DXtromSXUxTJKaF7k0rnqULDu1VEmg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: __ptep_get() returns a SW PTE value, while __set_pte_nosync() accepts one. When HW PTE storage uses a distinct hw_pte_t, reading or writing *ptep as a pte_t no longer satisfies those interfaces. Use hw_pte_val() to expose the pteval_t stored in either the hw_pte_t wrapper or its pte_t alias. __set_pte_nosync() writes pte_val(pte) to that storage, while __ptep_get() reads it and reconstructs a pte_t with __pte(). This avoids imposing a generic conversion interface between HW and SW PTE representations, which may require architecture-specific context in the future. Signed-off-by: Muhammad Usama Anjum --- arch/arm64/include/asm/pgtable.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 4768ec59de555..ce6580ab63128 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -360,7 +360,7 @@ static inline pte_t pte_clear_uffd(pte_t pte) static inline void __set_pte_nosync(hw_pte_t *ptep, pte_t pte) { - WRITE_ONCE(*ptep, pte); + WRITE_ONCE(hw_pte_val(*ptep), pte_val(pte)); } static inline void __set_pte_complete(pte_t pte) @@ -381,7 +381,7 @@ static inline void __set_pte(hw_pte_t *ptep, pte_t pte) static inline pte_t __ptep_get(hw_pte_t *ptep) { - return READ_ONCE(*ptep); + return __pte(READ_ONCE(hw_pte_val(*ptep))); } extern void __sync_icache_dcache(pte_t pteval); -- 2.47.3