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Peter Anvin" Subject: Re: [PATCH v4 27/36] x86: Implement the new page table range API Message-ID: References: <20230315051444.3229621-1-willy@infradead.org> <20230315051444.3229621-28-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230315051444.3229621-28-willy@infradead.org> X-Rspamd-Queue-Id: D9A65120021 X-Rspamd-Server: rspam09 X-Rspam-User: X-Stat-Signature: 53qxye441jkjmd1gcyzqprh4trhqrqit X-HE-Tag: 1678875166-693313 X-HE-Meta: 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 qq6qJyyt wt4VHyzr6QXcvP3Olffoe9jBY3QKQp3KnqnjVNYbozEY7y4621paN6wt5XRQ61EU+PnMy32AOPz0NxZqkQOmZnA/RI4RdmAXDL0+orepyU9vDVTMDThI3J6AaxUi+3Q/iNAnaxoosWx2qQCUGtKmH3GkqNohU1wBoluTbGh1CZRvXoMtXjljrr9Efveor+yg876cqJktE97A/fhVvATCvoLgw8ldxfiOjl+OaD63owprifxQarn//mvvc0TGdIHpt94Y5Qu4vRaRGeDbrbMxERJnIYGH9lWh+m2Aa3lgBQMeHAvi3oTBwjAs//m/pxvCGleeGGh7PcHJ1/ntDbR5S/zbamqg4U2rFYLfUgm8MVzerojdQ/DIANrYoR6KteP8zzYfCTuJDm6dIC5+W2TKK5ZluTVFtGaY7+unxuUUpddS29vOspGQ85TVauowJun3MdOSLyYWJRhViYQXzQp6YmHKNDC3f1ULht1AjvqQlJc+01V39aJ1fPUKR1cOagsr2xpS8N6LSqNccg1nWrqaGn9JbCw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Mar 15, 2023 at 05:14:35AM +0000, Matthew Wilcox (Oracle) wrote: > Add PFN_PTE_SHIFT and a noop update_mmu_cache_range(). > > Signed-off-by: Matthew Wilcox (Oracle) > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Borislav Petkov > Cc: Dave Hansen > Cc: x86@kernel.org > Cc: "H. Peter Anvin" Acked-by: Mike Rapoport (IBM) > --- > arch/x86/include/asm/pgtable.h | 13 ++++++------- > 1 file changed, 6 insertions(+), 7 deletions(-) > > diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h > index 1031025730d0..b237878061c4 100644 > --- a/arch/x86/include/asm/pgtable.h > +++ b/arch/x86/include/asm/pgtable.h > @@ -184,6 +184,8 @@ static inline int pte_special(pte_t pte) > > static inline u64 protnone_mask(u64 val); > > +#define PFN_PTE_SHIFT PAGE_SHIFT > + > static inline unsigned long pte_pfn(pte_t pte) > { > phys_addr_t pfn = pte_val(pte); > @@ -1019,13 +1021,6 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp) > return res; > } > > -static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, > - pte_t *ptep, pte_t pte) > -{ > - page_table_check_ptes_set(mm, addr, ptep, pte, 1); > - set_pte(ptep, pte); > -} > - > static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr, > pmd_t *pmdp, pmd_t pmd) > { > @@ -1291,6 +1286,10 @@ static inline void update_mmu_cache(struct vm_area_struct *vma, > unsigned long addr, pte_t *ptep) > { > } > +static inline void update_mmu_cache_range(struct vm_area_struct *vma, > + unsigned long addr, pte_t *ptep, unsigned int nr) > +{ > +} > static inline void update_mmu_cache_pmd(struct vm_area_struct *vma, > unsigned long addr, pmd_t *pmd) > { > -- > 2.39.2 > > -- Sincerely yours, Mike.