From nobody Tue Feb 10 07:22:13 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 162376542105561.79624272836361; Tue, 15 Jun 2021 06:57:01 -0700 (PDT) Received: from localhost ([::1]:34554 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lt9Yp-0000vf-UC for importer@patchew.org; Tue, 15 Jun 2021 09:56:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59406) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lt9Hh-0005to-5Q for qemu-devel@nongnu.org; Tue, 15 Jun 2021 09:39:17 -0400 Received: from mail-ej1-x62a.google.com ([2a00:1450:4864:20::62a]:34644) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lt9Hf-0002mD-L6 for qemu-devel@nongnu.org; Tue, 15 Jun 2021 09:39:16 -0400 Received: by mail-ej1-x62a.google.com with SMTP id g8so22656446ejx.1 for ; Tue, 15 Jun 2021 06:39:15 -0700 (PDT) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id r17sm11843769edt.33.2021.06.15.06.39.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Jun 2021 06:39:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=VfdzGHWM1V4e3ocZC9Ld1RwC+NetqD/RU7bcXjAcddc=; b=iE4flkm9oxpBzzyPKR6z0u5mLtEAmDJtHvqgYcofQWoZXj+9MJLmfVe3i5z3J4pDdk TnjHW9XELCHqsqBKwM5I7EkjdIxBn6sMM3iHLDB1Gm8fR0zYCjZm/3gvmOpaISZNFkR8 PfT5fRjvLQZ1WCsOcaaImXcfsf3PTpTWqfkPkKHgtZfj+h3o+V2SdJzY7cRM7crsQl/o HIkV2bti2RSHmeImc2v6TbScXYhJUWZ3waKIWMpy3lWuqtCnR68AeWpQ9tNrHbkzr5y+ aWL+17RBLNtZvl9z3nUhYxYILX0B9VvLy1rsq7szjZ7Q6grespohNkh8IHK0mknN42wj D3qA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=VfdzGHWM1V4e3ocZC9Ld1RwC+NetqD/RU7bcXjAcddc=; b=QdanTjh1zs1qSf15eGd+Ez4gzaSQHanFO4710zzTMi/z6+mWID6A+Bn0XIDk1P2o2y xVErVd1zCNZDI3LyoCVJQOwnw3BOYp1vBy5QiozES1Lf82cMidOYXFU/4cmsgxt4Z/JX vvQBArA8z0i1ANc6AooGDgl456rdhsYsL4w1pDiM7tIt5nUoijfCtT5sphx45/VeYZTd YGFaVeMVZTZEGHbYQ3IHteSDjl5j822xU5nztxCKkuHdYWfrNEWmA8wrdLPgC3mQ2ohq a7NCyPgKiXSp8W+ANQ2DFvhj0aeXh20eIYJmQDjHQZgT4ceZcEv88T+GFOipDYZSWFli uRSQ== X-Gm-Message-State: AOAM532VGuF5swUMwFoB/VkFnH/RGsvyGk5nED81+EGWAyq2KQD5TMIU E5tvAd87fxCH89rY4/gARFFo6hWAjPI= X-Google-Smtp-Source: ABdhPJzAe6IE75tHSFewqbOXFPcJjhpj9sRkgWy8O5ehVb6izNVYwc7mwG/NX9gNfEK9BolUwHy3Zw== X-Received: by 2002:a17:906:7c4d:: with SMTP id g13mr21052035ejp.216.1623764353778; Tue, 15 Jun 2021 06:39:13 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 17/33] softmmu/physmem: Fix qemu_ram_remap() to handle shared anonymous memory Date: Tue, 15 Jun 2021 15:38:39 +0200 Message-Id: <20210615133855.775687-18-pbonzini@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210615133855.775687-1-pbonzini@redhat.com> References: <20210615133855.775687-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::62a; envelope-from=paolo.bonzini@gmail.com; helo=mail-ej1-x62a.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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: Peter Xu , David Hildenbrand Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" From: David Hildenbrand RAM_SHARED now also properly indicates shared anonymous memory. Let's check that flag for anonymous memory as well, to restore the proper mapping. Fixes: 06329ccecfa0 ("mem: add share parameter to memory-backend-ram") Reviewed-by: Peter Xu Signed-off-by: David Hildenbrand Message-Id: <20210406080126.24010-4-david@redhat.com> Signed-off-by: Paolo Bonzini --- softmmu/physmem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/softmmu/physmem.c b/softmmu/physmem.c index b417f9c282..2f106d0680 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -2243,13 +2243,13 @@ void qemu_ram_remap(ram_addr_t addr, ram_addr_t len= gth) abort(); } else { flags =3D MAP_FIXED; + flags |=3D block->flags & RAM_SHARED ? + MAP_SHARED : MAP_PRIVATE; if (block->fd >=3D 0) { - flags |=3D (block->flags & RAM_SHARED ? - MAP_SHARED : MAP_PRIVATE); area =3D mmap(vaddr, length, PROT_READ | PROT_WRITE, flags, block->fd, offset); } else { - flags |=3D MAP_PRIVATE | MAP_ANONYMOUS; + flags |=3D MAP_ANONYMOUS; area =3D mmap(vaddr, length, PROT_READ | PROT_WRITE, flags, -1, 0); } --=20 2.31.1