From patchwork Thu Apr 23 13:56:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhenyu Ye X-Patchwork-Id: 11505753 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8A35481 for ; Thu, 23 Apr 2020 14:01:33 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 67F412077D for ; Thu, 23 Apr 2020 14:01:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WN6fUNC4" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 67F412077D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=GWWy4EA4h+fb8YrmCprvMSCHgzDXsfwv21X7f52CQMw=; b=WN6fUNC4nPbssi DDNdA4yOccxCg8aBNr59bRz2S6ZrSiLLnob+ZkdDnHWbGSlIwjQP4/8JqyLTKWNDRiXKi7o1mWLWr yHd3ZT9BDUFpxtBEOgONKFOyTeEfgPJEL5NhPPlDXSK3t6KTDL1pIQcjAljebSZSwOLLrkcy0UJyn Makn49NHH85OGqtRd2xD3nprJVbAbhP9x8Ytns+MllPG4lBF1Lj5Xk0Df3KagtzI/HXH886eVd10+ meg2AX83HlRW3J8kUNXJL/NaTUEZiysCh3qFA2EjzLFSVHE3ngM0omwaiHSnr7aP7dE0BhLLYJaOq PUHYNyJUvsqeN+SvrWgw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jRcPv-0001ly-Oo; Thu, 23 Apr 2020 14:01:27 +0000 Received: from szxga05-in.huawei.com ([45.249.212.191] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jRcOJ-0005EM-Iq for linux-arm-kernel@lists.infradead.org; Thu, 23 Apr 2020 13:59:51 +0000 Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id A941C624DFAC58D63055; Thu, 23 Apr 2020 21:59:36 +0800 (CST) Received: from DESKTOP-KKJBAGG.china.huawei.com (10.173.220.25) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.487.0; Thu, 23 Apr 2020 21:59:27 +0800 From: Zhenyu Ye To: , , , , , , , , , , , , , , , , Subject: [PATCH v2 5/6] mm: tlb: Provide flush_*_tlb_range wrappers Date: Thu, 23 Apr 2020 21:56:55 +0800 Message-ID: <20200423135656.2712-6-yezhenyu2@huawei.com> X-Mailer: git-send-email 2.22.0.windows.1 In-Reply-To: <20200423135656.2712-1-yezhenyu2@huawei.com> References: <20200423135656.2712-1-yezhenyu2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.173.220.25] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200423_065947_814753_4AEA61F1 X-CRM114-Status: UNSURE ( 8.93 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.191 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, yezhenyu2@huawei.com, linux-kernel@vger.kernel.org, xiexiangyou@huawei.com, zhangshaokun@hisilicon.com, linux-mm@kvack.org, arm@kernel.org, prime.zeng@hisilicon.com, kuhn.chenqun@huawei.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch provides flush_{pte|pmd|pud|p4d}_tlb_range() in generic code, which are expressed through the mmu_gather APIs. These interface set tlb->cleared_* and finally call tlb_flush(), so we can do the tlb invalidation according to the information in struct mmu_gather. Signed-off-by: Zhenyu Ye --- include/asm-generic/pgtable.h | 12 ++++++++++-- mm/pgtable-generic.c | 22 ++++++++++++++++++++++ 2 files changed, 32 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 329b8c8ca703..8c92122ded9b 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -1161,11 +1161,19 @@ static inline int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) * invalidate the entire TLB which is not desitable. * e.g. see arch/arc: flush_pmd_tlb_range */ -#define flush_pmd_tlb_range(vma, addr, end) flush_tlb_range(vma, addr, end) -#define flush_pud_tlb_range(vma, addr, end) flush_tlb_range(vma, addr, end) +extern void flush_pte_tlb_range(struct vm_area_struct *vma, + unsigned long addr, unsigned long end); +extern void flush_pmd_tlb_range(struct vm_area_struct *vma, + unsigned long addr, unsigned long end); +extern void flush_pud_tlb_range(struct vm_area_struct *vma, + unsigned long addr, unsigned long end); +extern void flush_p4d_tlb_range(struct vm_area_struct *vma, + unsigned long addr, unsigned long end); #else +#define flush_pte_tlb_range(vma, addr, end) BUILD_BUG() #define flush_pmd_tlb_range(vma, addr, end) BUILD_BUG() #define flush_pud_tlb_range(vma, addr, end) BUILD_BUG() +#define flush_p4d_tlb_range(vma, addr, end) BUILD_BUG() #endif #endif diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index 3d7c01e76efc..3eff199d3507 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -101,6 +101,28 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address, #ifdef CONFIG_TRANSPARENT_HUGEPAGE +#ifndef __HAVE_ARCH_FLUSH_PMD_TLB_RANGE + +#define FLUSH_Pxx_TLB_RANGE(_pxx) \ +void flush_##_pxx##_tlb_range(struct vm_area_struct *vma, \ + unsigned long addr, unsigned long end) \ +{ \ + struct mmu_gather tlb; \ + \ + tlb_gather_mmu(&tlb, vma->vm_mm, addr, end); \ + tlb_start_vma(&tlb, vma); \ + tlb_flush_##_pxx##_range(&tlb, addr, end - addr); \ + tlb_end_vma(&tlb, vma); \ + tlb_finish_mmu(&tlb, addr, end); \ +} + +FLUSH_Pxx_TLB_RANGE(pte) +FLUSH_Pxx_TLB_RANGE(pmd) +FLUSH_Pxx_TLB_RANGE(pud) +FLUSH_Pxx_TLB_RANGE(p4d) + +#endif /* __HAVE_ARCH_FLUSH_PMD_TLB_RANGE */ + #ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS int pmdp_set_access_flags(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp,