From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B26AAC433E4 for ; Tue, 21 Jul 2020 15:59:27 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 7EC6D2077D for ; Tue, 21 Jul 2020 15:59:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="cS12iOIv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7EC6D2077D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:49714 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jxufu-0003JM-Qu for qemu-devel@archiver.kernel.org; Tue, 21 Jul 2020 11:59:26 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60860) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jxufL-0002tW-E5 for qemu-devel@nongnu.org; Tue, 21 Jul 2020 11:58:51 -0400 Received: from mail-wr1-x443.google.com ([2a00:1450:4864:20::443]:43724) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jxufJ-0002uZ-PE for qemu-devel@nongnu.org; Tue, 21 Jul 2020 11:58:51 -0400 Received: by mail-wr1-x443.google.com with SMTP id a15so6778104wrh.10 for ; Tue, 21 Jul 2020 08:58:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:user-agent:from:to:cc:subject:in-reply-to:date :message-id:mime-version:content-transfer-encoding; bh=mEeTZ2cmAcR5i8hd1VKggd6XPfzprou2Ahc+7rPYaIg=; b=cS12iOIvlZVP378UA0qN9HWm6/XejSNTJRRxZb/j9ZgQWaZaHzImOy/ZT9CUCN94JE DuUc0bBlu1VLY4ubaLS3ceBzalC46bPsaIsHG4VMTcrUxgL8hNBgP8ZDDxDOItmxyusd GFHfW1qJNOM6kU3PvcW1B84BBjTyWI1WvO/rm95RxxwgH30UIhe4rlOQrqsxznNzPWeR 1v2JKnQP1DzsiEoHGt3cfvgxDfGYHmnIm4ch1xzvd6vx2aMeiEQfzhabKSJpPK78lqx1 kBchDRZFSs72zOrCarJAhpq+rt6gP+r0Xg4NF5aheXejIHLhdbIImRUao3bPR56edl9f YcNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version:content-transfer-encoding; bh=mEeTZ2cmAcR5i8hd1VKggd6XPfzprou2Ahc+7rPYaIg=; b=mhdvmVsI4dPikF5cPFLT8z1kz3oubDXXHNxYCEiRa/+wFpig4kEAlPMpxRUS49PYhr QLgjC0Q/IX/UMNG5/BJBPRGp7ZKNRJEx3ImmvawEQmTE6PBEjgYs+NoT84BGYcGNv6bu 8jwNUGhPyydn7QBp5DWZYNRzXZ+pcjLCz2ESUbCVSen3+Hzs5I/mI+Kh46vc/AedirZE zUnT1i6BtJnGsEw9Lb/iPpW8LuOmrNoqcZLzSYEE+yRkGjGogMkytq8fffu5kIOm2zXx 5rSD8N52FXsdVgRTaTKFsy5lLdxALcrQDyT8nTRzxhdp9bN6E60CBrahHewpCjYo5XGM r4Lg== X-Gm-Message-State: AOAM533lz5YOz1wzTHVTe3rwM+08m6JnzSzQ2vSyWOEp+2uZzEjcTDB8 XuQCBWfaNKO1STr+mo3qQE68ow== X-Google-Smtp-Source: ABdhPJyIFGbeRKKFjLZP6r3BW48QTK7HOQ27UT2os/kZ9GL7XoyqIN1OkQTCIjmqpcC+ijmzLjAGxA== X-Received: by 2002:adf:fe12:: with SMTP id n18mr10607714wrr.295.1595347127914; Tue, 21 Jul 2020 08:58:47 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id w7sm3775731wmc.32.2020.07.21.08.58.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2020 08:58:46 -0700 (PDT) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 309D11FF7E; Tue, 21 Jul 2020 16:58:39 +0100 (BST) References: <20200717105139.25293-1-alex.bennee@linaro.org> <20200717105139.25293-5-alex.bennee@linaro.org> User-agent: mu4e 1.5.5; emacs 28.0.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Richard Henderson Subject: Re: [PATCH v1 4/5] util: add qemu_get_host_physmem utility function In-reply-to: Date: Tue, 21 Jul 2020 16:58:39 +0100 Message-ID: <87h7u0vp00.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::443; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: fam@euphon.net, berrange@redhat.com, Stefan Weil , qemu-devel@nongnu.org, Christian Ehrhardt , f4bug@amsat.org, cota@braap.org, Paolo Bonzini , aurelien@aurel32.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Richard Henderson writes: > On 7/17/20 3:51 AM, Alex Benn=C3=A9e wrote: >> +size_t qemu_get_host_physmem(void) >> +{ >> +#ifdef _SC_PHYS_PAGES >> + long pages =3D sysconf(_SC_PHYS_PAGES); >> + if (pages > 0) { >> + return pages * qemu_real_host_page_size; >> + } >> +#endif >> + return 0; >> +} > > Is it worth examining our own RLIMIT_{AS,DATA} as well? We don't anywhere else in the code so for now I'd say not. > > I suppose that's not usually what is tweaked in the example of a ram-limi= ted > container... > > > r~ --=20 Alex Benn=C3=A9e