From nobody Wed Nov 19 01:41:59 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1613921501; cv=none; d=zohomail.com; s=zohoarc; b=iDird/3uEhW7L1pSrHkCai48XjU6+9kBufPgoJyqyVfIQ1ipL5081UxMt6pA4sAGe7kGwdWozmPLvuCtg3z6X2NcrSzGVKkCArtHw8HUYGL6dzAL5gDnmBcvsCIGkBucsECY61cxWWBhup/XRmm8j1mN2WZV8LEHUKCsTVsfWrw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1613921501; h=Content-Type:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=lczgGvFiS2buguKodiHZL9mlIFs+SxVE3vXJ/CK9d4k=; b=Df7qYOvbBQHN502Rz+NqDazpiIrU/lgDRt05tXSwB6txgeaeJ5HF7DOmeXnggpXpXGEHxpx5MZS1K0lTJee2wan5XJvjw6XW2FU1q94oRM1a2+Dt9A7i9E3vI28y6fof9V/41bCRNI5TgoOjWYvm47fRvmpkI5w0PKEgYULcs78= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 161392150129937.8938178386951; Sun, 21 Feb 2021 07:31:41 -0800 (PST) Received: from localhost ([::1]:33690 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lDqhv-0001tB-EM for importer@patchew.org; Sun, 21 Feb 2021 10:31:39 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:56034) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lDpJv-0005nb-30; Sun, 21 Feb 2021 09:02:47 -0500 Received: from atcsqr.andestech.com ([60.248.187.195]:10499) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lDpJr-0005Az-5e; Sun, 21 Feb 2021 09:02:46 -0500 Received: from mail.andestech.com (atcpcs16.andestech.com [10.0.1.222]) by ATCSQR.andestech.com with ESMTP id 11LDuwh4062723; Sun, 21 Feb 2021 21:56:58 +0800 (GMT-8) (envelope-from cwshu@andestech.com) Received: from ubuntu1604.andestech.com (10.0.12.177) by ATCPCS16.andestech.com (10.0.1.222) with Microsoft SMTP Server id 14.3.487.0; Sun, 21 Feb 2021 22:02:27 +0800 From: Jim Shu To: , Subject: [PATCH 3/3] target/riscv: flush TLB pages if PMP permission has been changed Date: Sun, 21 Feb 2021 22:01:22 +0800 Message-ID: <1613916082-19528-4-git-send-email-cwshu@andestech.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1613916082-19528-1-git-send-email-cwshu@andestech.com> References: <1613916082-19528-1-git-send-email-cwshu@andestech.com> MIME-Version: 1.0 X-Originating-IP: [10.0.12.177] X-DNSRBL: X-MAIL: ATCSQR.andestech.com 11LDuwh4062723 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=60.248.187.195; envelope-from=cwshu@andestech.com; helo=ATCSQR.andestech.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Sun, 21 Feb 2021 10:29:58 -0500 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alistair Francis , Palmer Dabbelt , Jim Shu , Sagar Karandikar , Bastian Koppelmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" If PMP permission of any address has been changed by updating PMP entry, flush all TLB pages to prevent from getting old permission. Signed-off-by: Jim Shu Reviewed-by: Alistair Francis --- target/riscv/pmp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c index ebd874cde3..cff020122a 100644 --- a/target/riscv/pmp.c +++ b/target/riscv/pmp.c @@ -28,6 +28,7 @@ #include "qapi/error.h" #include "cpu.h" #include "trace.h" +#include "exec/exec-all.h" =20 static void pmp_write_cfg(CPURISCVState *env, uint32_t addr_index, uint8_t val); @@ -347,6 +348,9 @@ void pmpcfg_csr_write(CPURISCVState *env, uint32_t reg_= index, cfg_val =3D (val >> 8 * i) & 0xff; pmp_write_cfg(env, (reg_index * 4) + i, cfg_val); } + + /* If PMP permission of any addr has been changed, flush TLB pages. */ + tlb_flush(env_cpu(env)); } =20 =20 --=20 2.30.1