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Thu, 08 Dec 2022 11:39:18 -0800 (PST) Date: Thu, 8 Dec 2022 11:38:27 -0800 In-Reply-To: <20221208193857.4090582-1-dmatlack@google.com> Mime-Version: 1.0 References: <20221208193857.4090582-1-dmatlack@google.com> X-Mailer: git-send-email 2.39.0.rc1.256.g54fd8350bd-goog Message-ID: <20221208193857.4090582-8-dmatlack@google.com> Subject: [RFC PATCH 07/37] mm: Introduce architecture-neutral PG_LEVEL macros From: David Matlack To: Paolo Bonzini Cc: Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose , Oliver Upton , Huacai Chen , Aleksandar Markovic , Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Sean Christopherson , Andrew Morton , David Matlack , Anshuman Khandual , Nadav Amit , "Matthew Wilcox (Oracle)" , Vlastimil Babka , "Liam R. Howlett" , Suren Baghdasaryan , Peter Xu , xu xin , Arnd Bergmann , Yu Zhao , Colin Cross , Hugh Dickins , Ben Gardon , Mingwei Zhang , Krish Sadhukhan , Ricardo Koller , Jing Zhang , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221208_193920_690929_6FBD497D X-CRM114-Status: GOOD ( 11.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce architecture-neutral versions of the x86 macros PG_LEVEL_4K, PG_LEVEL_2M, etc. The x86 macros are used extensively by KVM/x86's page table management code. Introducing architecture-neutral version of these macros paves the way for porting KVM/x86's page table management code to architecture-neutral code. Signed-off-by: David Matlack --- arch/x86/include/asm/pgtable_types.h | 12 ++++-------- include/linux/mm_types.h | 9 +++++++++ 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index aa174fed3a71..bdf41325f089 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -518,14 +518,10 @@ extern void native_pagetable_init(void); struct seq_file; extern void arch_report_meminfo(struct seq_file *m); -enum pg_level { - PG_LEVEL_NONE, - PG_LEVEL_4K, - PG_LEVEL_2M, - PG_LEVEL_1G, - PG_LEVEL_512G, - PG_LEVEL_NUM -}; +#define PG_LEVEL_4K PG_LEVEL_PTE +#define PG_LEVEL_2M PG_LEVEL_PMD +#define PG_LEVEL_1G PG_LEVEL_PUD +#define PG_LEVEL_512G PG_LEVEL_P4D #ifdef CONFIG_PROC_FS extern void update_page_count(int level, unsigned long pages); diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 500e536796ca..0445d0673afe 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -1003,4 +1003,13 @@ enum fault_flag { typedef unsigned int __bitwise zap_flags_t; +enum pg_level { + PG_LEVEL_NONE, + PG_LEVEL_PTE, + PG_LEVEL_PMD, + PG_LEVEL_PUD, + PG_LEVEL_P4D, + PG_LEVEL_NUM +}; + #endif /* _LINUX_MM_TYPES_H */