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d=hostedemail.com; s=arc-20220608; t=1735581409; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dHsoEyJZ5XLC7JY7dTW5E1So6h81yzYLCyPTrStsqgs=; b=hYOaqm0ZRkEwY74aTk7r4C/zFQecOwOAyp6YnY5XQqY2gyWwbX45S29Nc7g2ZZI8Ii/Uib AH0urqZd1K8hmNboAIRUaLDNMfgLj0KvcZZNgDUZfCvlnIDH1DVobnStn4YQosNbcLldRR zPs7lGmXvrVS1WZkU63qPeVkJX3UYes= Received: from fangorn.home.surriel.com ([10.0.13.7]) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1tSJzc-000000008Lf-37RI; Mon, 30 Dec 2024 12:55:52 -0500 From: Rik van Riel To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, akpm@linux-foundation.org, nadav.amit@gmail.com, zhengqi.arch@bytedance.com, linux-mm@kvack.org, Rik van Riel Subject: [PATCH 02/12] x86/mm: remove pv_ops.mmu.tlb_remove_table call Date: Mon, 30 Dec 2024 12:53:03 -0500 Message-ID: <20241230175550.4046587-3-riel@surriel.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241230175550.4046587-1-riel@surriel.com> References: <20241230175550.4046587-1-riel@surriel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 7taabjqw5gw1ojh4upcjhbmyarfc4su7 X-Rspam-User: X-Rspamd-Queue-Id: 44E0E40012 X-Rspamd-Server: rspam08 X-HE-Tag: 1735581410-558139 X-HE-Meta: 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 3S0tRZ17 cdkgJvYmJbHAZub+tGr056OqlPMU9Z5gf7m9zlQ5MaAc8qIMTp08lau8oe264hdpwilZQsT4cdEG/4POxCgHWKxHoDqF7Bmp7vz2dkDm1wd8P1rlXUixL0LvdVGY2uP60KftjO2Ys/qouEp/NIi4Gq6Pb15bf5leZnGPym6Gqd8fZrA5AEPx4LfhhEEwQh1Nvqzg3Cx/NFXXh62SKVmxIagWVTL3mnXMqF3TDRJcRIn1WevQobKVCJpCyIEiAegRMzhiwKI2zZjxz8TUrXhYgE3js3vNXYLMblodBwJnPzQBWwJgO67ZvFkxq9eHIltYNA7iExXsePtwylkglg7PIB1cs2dkeYQUmSuSCLp8ocVTExbBp0rApi5iF7JfSLhSQVa22K78Zsx+kdw8LdSAzWU2mevhyiFsk7BgQwLsGL4i7QqonIWurxTlSWH9fXRfGZaowrp4JdBE1ej0= 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: List-Subscribe: List-Unsubscribe: Every pv_ops.mmu.tlb_remove_table call ends up calling tlb_remove_table. Get rid of the indirection by simply calling tlb_remove_table directly, and not going through the paravirt function pointers. Signed-off-by: Rik van Riel Suggested-by: Qi Zheng --- arch/x86/hyperv/mmu.c | 1 - arch/x86/include/asm/paravirt.h | 5 ----- arch/x86/include/asm/paravirt_types.h | 2 -- arch/x86/kernel/kvm.c | 1 - arch/x86/kernel/paravirt.c | 1 - arch/x86/mm/pgtable.c | 16 ++++------------ arch/x86/xen/mmu_pv.c | 1 - 7 files changed, 4 insertions(+), 23 deletions(-) diff --git a/arch/x86/hyperv/mmu.c b/arch/x86/hyperv/mmu.c index 1cc113200ff5..cbe6c71e17c1 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -240,5 +240,4 @@ void hyperv_setup_mmu_ops(void) pr_info("Using hypercall for remote TLB flush\n"); pv_ops.mmu.flush_tlb_multi = hyperv_flush_tlb_multi; - pv_ops.mmu.tlb_remove_table = tlb_remove_table; } diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index d4eb9e1d61b8..794ba3647c6c 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -91,11 +91,6 @@ static inline void __flush_tlb_multi(const struct cpumask *cpumask, PVOP_VCALL2(mmu.flush_tlb_multi, cpumask, info); } -static inline void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table) -{ - PVOP_VCALL2(mmu.tlb_remove_table, tlb, table); -} - static inline void paravirt_arch_exit_mmap(struct mm_struct *mm) { PVOP_VCALL1(mmu.exit_mmap, mm); diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 8d4fbe1be489..13405959e4db 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -136,8 +136,6 @@ struct pv_mmu_ops { void (*flush_tlb_multi)(const struct cpumask *cpus, const struct flush_tlb_info *info); - void (*tlb_remove_table)(struct mmu_gather *tlb, void *table); - /* Hook for intercepting the destruction of an mm_struct. */ void (*exit_mmap)(struct mm_struct *mm); void (*notify_page_enc_status_changed)(unsigned long pfn, int npages, bool enc); diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 7a422a6c5983..3be9b3342c67 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -838,7 +838,6 @@ static void __init kvm_guest_init(void) #ifdef CONFIG_SMP if (pv_tlb_flush_supported()) { pv_ops.mmu.flush_tlb_multi = kvm_flush_tlb_multi; - pv_ops.mmu.tlb_remove_table = tlb_remove_table; pr_info("KVM setup pv remote TLB flush\n"); } diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 2b78a6b466ed..c019771e0123 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -186,7 +186,6 @@ struct paravirt_patch_template pv_ops = { .mmu.flush_tlb_kernel = native_flush_tlb_global, .mmu.flush_tlb_one_user = native_flush_tlb_one_user, .mmu.flush_tlb_multi = native_flush_tlb_multi, - .mmu.tlb_remove_table = tlb_remove_table, .mmu.exit_mmap = paravirt_nop, .mmu.notify_page_enc_status_changed = paravirt_nop, diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5745a354a241..3dc4af1f7868 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -18,14 +18,6 @@ EXPORT_SYMBOL(physical_mask); #define PGTABLE_HIGHMEM 0 #endif -#ifndef CONFIG_PARAVIRT -static inline -void paravirt_tlb_remove_table(struct mmu_gather *tlb, void *table) -{ - tlb_remove_page(tlb, table); -} -#endif - gfp_t __userpte_alloc_gfp = GFP_PGTABLE_USER | PGTABLE_HIGHMEM; pgtable_t pte_alloc_one(struct mm_struct *mm) @@ -54,7 +46,7 @@ void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) { pagetable_pte_dtor(page_ptdesc(pte)); paravirt_release_pte(page_to_pfn(pte)); - paravirt_tlb_remove_table(tlb, pte); + tlb_remove_table(tlb, pte); } #if CONFIG_PGTABLE_LEVELS > 2 @@ -70,7 +62,7 @@ void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) tlb->need_flush_all = 1; #endif pagetable_pmd_dtor(ptdesc); - paravirt_tlb_remove_table(tlb, ptdesc_page(ptdesc)); + tlb_remove_table(tlb, ptdesc_page(ptdesc)); } #if CONFIG_PGTABLE_LEVELS > 3 @@ -80,14 +72,14 @@ void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) pagetable_pud_dtor(ptdesc); paravirt_release_pud(__pa(pud) >> PAGE_SHIFT); - paravirt_tlb_remove_table(tlb, virt_to_page(pud)); + tlb_remove_table(tlb, virt_to_page(pud)); } #if CONFIG_PGTABLE_LEVELS > 4 void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d) { paravirt_release_p4d(__pa(p4d) >> PAGE_SHIFT); - paravirt_tlb_remove_table(tlb, virt_to_page(p4d)); + tlb_remove_table(tlb, virt_to_page(p4d)); } #endif /* CONFIG_PGTABLE_LEVELS > 4 */ #endif /* CONFIG_PGTABLE_LEVELS > 3 */ diff --git a/arch/x86/xen/mmu_pv.c b/arch/x86/xen/mmu_pv.c index 55a4996d0c04..041e17282af0 100644 --- a/arch/x86/xen/mmu_pv.c +++ b/arch/x86/xen/mmu_pv.c @@ -2137,7 +2137,6 @@ static const typeof(pv_ops) xen_mmu_ops __initconst = { .flush_tlb_kernel = xen_flush_tlb, .flush_tlb_one_user = xen_flush_tlb_one_user, .flush_tlb_multi = xen_flush_tlb_multi, - .tlb_remove_table = tlb_remove_table, .pgd_alloc = xen_pgd_alloc, .pgd_free = xen_pgd_free, -- 2.47.1