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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628642598; bh=o68pQKOkoMjqGvslTv9+5NhBcfzvevarzmfnV2WjK38=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i9E0moRAtyOyw9Sx7Ur777jymu/dOGX06mLGlJiV9J7UjMcNqnZWnrasSe3jnphZJ m+oAeup8cQVGK1bf56LRFIkx8Afv89ZYjAcP+0kpXROVmnN3s7OvB6IHo18pefNK/r xqrqgkMNIo/2uXAZMXCbo4FTNMGFWtrVIwuY3cLhAzJFHNFFX4bqFzm6uNgosWyKrL v8phW7+OpxKLP1YbUgtaCcUGwQDdZc7EJhMrrDN0UpaM8kwi3aZ9n9iEj68R/2sVMI +3zBgBaR0tjm1iv+IVAFceG3SkGbmKRRzSnLN8WcfL6xIs+dWiE0ZyoSB+RmCE4a4o d9YpYBgglc12A== From: Vineet Gupta To: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Anshuman Khandual , Mike Rapoport , Vineet Gupta Subject: [PATCH 04/18] ARC: mm: remove pgd_offset_fast Date: Tue, 10 Aug 2021 17:42:44 -0700 Message-Id: <20210811004258.138075-5-vgupta@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210811004258.138075-1-vgupta@kernel.org> References: <20210811004258.138075-1-vgupta@kernel.org> MIME-Version: 1.0 X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: E3783D006327 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=i9E0moRA; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of vgupta@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=vgupta@kernel.org X-Stat-Signature: 4i8s47pnxaxsq174z5zcisoqy3u3pg4n X-HE-Tag: 1628642598-527470 Content-Transfer-Encoding: quoted-printable 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: Signed-off-by: Vineet Gupta --- arch/arc/include/asm/pgtable.h | 23 ----------------------- arch/arc/mm/fault.c | 2 +- 2 files changed, 1 insertion(+), 24 deletions(-) diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtabl= e.h index 0c3e220bd2b4..80b57c14b430 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -284,29 +284,6 @@ static inline void set_pte_at(struct mm_struct *mm, = unsigned long addr, set_pte(ptep, pteval); } =20 -/* - * Macro to quickly access the PGD entry, utlising the fact that some - * arch may cache the pointer to Page Directory of "current" task - * in a MMU register - * - * Thus task->mm->pgd (3 pointer dereferences, cache misses etc simply - * becomes read a register - * - * ********CAUTION*******: - * Kernel code might be dealing with some mm_struct of NON "current" - * Thus use this macro only when you are certain that "current" is curre= nt - * e.g. when dealing with signal frame setup code etc - */ -#ifdef ARC_USE_SCRATCH_REG -#define pgd_offset_fast(mm, addr) \ -({ \ - pgd_t *pgd_base =3D (pgd_t *) read_aux_reg(ARC_REG_SCRATCH_DATA0); \ - pgd_base + pgd_index(addr); \ -}) -#else -#define pgd_offset_fast(mm, addr) pgd_offset(mm, addr) -#endif - extern pgd_t swapper_pg_dir[] __aligned(PAGE_SIZE); void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep); diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index f5657cb68e4f..41f154320964 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -33,7 +33,7 @@ noinline static int handle_kernel_vaddr_fault(unsigned = long address) pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; =20 - pgd =3D pgd_offset_fast(current->active_mm, address); + pgd =3D pgd_offset(current->active_mm, address); pgd_k =3D pgd_offset_k(address); =20 if (!pgd_present(*pgd_k)) --=20 2.25.1