From nobody Sat Feb 7 08:53:47 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.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=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1556786562; cv=none; d=zoho.com; s=zohoarc; b=HhlxQLtcd/k40siDqVdrc9cjDT5J94+wbHIRbdsI5oq+/bksR1UfQnOZebroJstb7OZm09W6HVAc8iUXUG7me5jaHzEcG/IzFtcRO8ATWZVeGm7njZyLMn0OwieKMcxdvD6zuK8wTguVQF14wg1kGflltoicjFXzVU4KBhchUqE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1556786562; h=Content-Transfer-Encoding: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:ARC-Authentication-Results; bh=IQ+Z9R6NydncJMKRI0TwB1Gcuq7KLY744W/ZlSezhlU=; b=XrB2k9DSstje1Y3zoFQQgLrjpd1TtKIyU21apCrtZ6U4UKkcyz4OSabbwJKuVOsHFaR8bDzk4kTj4NC+dwKoJyqHx7vsQQNMdvXB8lay2D9CvJJ9EDeb7WYegE6EHOvS5AEmHtGwscK8dEKoosbs5HOf/uIi3O8Uu6IelSh0gkg= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 155678656289162.60718015876739; Thu, 2 May 2019 01:42:42 -0700 (PDT) Received: from localhost ([127.0.0.1]:47593 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hM7Ia-0001Dp-Ta for importer@patchew.org; Thu, 02 May 2019 04:42:36 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42978) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hM6tk-0003cY-Rb for qemu-devel@nongnu.org; Thu, 02 May 2019 04:16:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hM6th-0008Oo-Du for qemu-devel@nongnu.org; Thu, 02 May 2019 04:16:56 -0400 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]:35259) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hM6th-0008EY-1X for qemu-devel@nongnu.org; Thu, 02 May 2019 04:16:53 -0400 Received: by mail-wr1-x441.google.com with SMTP id f7so2034714wrs.2 for ; Thu, 02 May 2019 01:16:52 -0700 (PDT) Received: from localhost.localdomain ([176.230.64.186]) by smtp.gmail.com with ESMTPSA id d16sm44698367wra.54.2019.05.02.01.16.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 02 May 2019 01:16:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=IQ+Z9R6NydncJMKRI0TwB1Gcuq7KLY744W/ZlSezhlU=; b=gHWAX6VNFtWqbR/rCkEIGTs4FXbsFANrgE0ZljIZf4DSTjutF2IQsA2zA/17uDVPG+ NA2q/6Cg5bKcv42S6eDJZ8kcgnS+W9jLOcYdazQgw4tTQhZkqWmS6Mz2X1cylDVV8pTR Z9SXKFkI28fHudGv4DZSy+sAvVPSv/uq7BQN1/r6/DFjRq+9FtdE1ms+VrfNE2bltqOL VqVMJ5ygkTFOP7dT91o/+WLuWLDmLlEHWiXRhO2bUr3j5a/YKf5fLwZXA45NHWFkqODD kyD/MEi0fJuJZaVJRL96/0fEQc4h4/s54ID4W6Ym9riIWRuwEFs6SNDml1VWmgwWymkh EI7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=IQ+Z9R6NydncJMKRI0TwB1Gcuq7KLY744W/ZlSezhlU=; b=QC1ukT1k1DEK6NJRk00T8zLR/mSkXHw+Av1S06BS7oPA5coxWV9gOoFhsxqB+ElREu t9NUK6lOH+ZldFaUPlRE3jwq8kJxCoSzecjasbB+GS6eSK2KYbjOyoKVQSmL7jLm4/Qd y4bLNtP47/U1ZYeTxIg7bWimuAQyjdpARMHVkhYn+twlXkeyYbYEY30umZAcbgMFNqh8 Hws4mArXzWWmi/70mv4f8QQ7r5pgy/4ghzNAqIdBf7OadSSRgiJX4Dww1iN/XriZ3fiU EkArblD/Itj9k9Jk4K1aJuiziuAyZ1mnGo/FTlMRHXC3SRpb4uhYCGff/4AJwYJVhoP6 8Yew== X-Gm-Message-State: APjAAAXXzN38hCX4/67BmvnMQXMM+a/JVyWP0U679Vk3IFwoG7TPJ1S+ Vp4atDXT1qp22K0rKnd4diov0quU X-Google-Smtp-Source: APXvYqytfjUxf8Z1vZ0yv0EDziDtIlPnFjJOJPPleMUewruz/fwDuSv7KxIk9ilBAF9aDVl0bCFgYA== X-Received: by 2002:a5d:4dc1:: with SMTP id f1mr1753355wru.300.1556785010899; Thu, 02 May 2019 01:16:50 -0700 (PDT) From: Jon Doron To: qemu-devel@nongnu.org Date: Thu, 2 May 2019 11:15:54 +0300 Message-Id: <20190502081554.5521-28-arilou@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190502081554.5521-1-arilou@gmail.com> References: <20190502081554.5521-1-arilou@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::441 Subject: [Qemu-devel] [PATCH v9 27/27] gdbstub: Add support to write a MSR for KVM target X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, Jon Doron 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" gdb> maint packet Qqemu.kvm.Wrmsr:MsrIndex,Value Signed-off-by: Jon Doron --- gdbstub.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/gdbstub.c b/gdbstub.c index f48c3a2b5f..a434a3749e 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -2145,7 +2145,8 @@ static void handle_query_qemu_supported(GdbCmdContext= *gdb_ctx, void *user_ctx) "sstepbits;sstep;PhyMemMode"); =20 if (kvm_enabled()) { - pstrcat(gdb_ctx->str_buf, sizeof(gdb_ctx->str_buf), ";kvm.Rdmsr"); + pstrcat(gdb_ctx->str_buf, sizeof(gdb_ctx->str_buf), + ";kvm.Rdmsr;kvm.Wrmsr"); } =20 put_packet(gdb_ctx->s, gdb_ctx->str_buf); @@ -2196,6 +2197,26 @@ static void handle_query_kvm_read_msr(GdbCmdContext = *gdb_ctx, void *user_ctx) put_packet(gdb_ctx->s, gdb_ctx->str_buf); } =20 +static void handle_set_kvm_write_msr(GdbCmdContext *gdb_ctx, void *user_ct= x) +{ + if (!kvm_enabled()) { + return; + } + + if (gdb_ctx->num_params < 2) { + put_packet(gdb_ctx->s, "E22"); + return; + } + + if (kvm_arch_write_msr(gdbserver_state->c_cpu, gdb_ctx->params[0].val_= ul, + gdb_ctx->params[1].val_ull)) { + put_packet(gdb_ctx->s, "E00"); + return; + } + + put_packet(gdb_ctx->s, "OK"); +} + static GdbCmdParseEntry gdb_gen_query_set_common_table[] =3D { /* Order is important if has same prefix */ { @@ -2302,6 +2323,12 @@ static GdbCmdParseEntry gdb_gen_set_table[] =3D { .cmd_startswith =3D 1, .schema =3D "l0" }, + { + .handler =3D handle_set_kvm_write_msr, + .cmd =3D "qemu.kvm.Wrmsr:", + .cmd_startswith =3D 1, + .schema =3D "l,L0" + }, }; =20 static void handle_gen_query(GdbCmdContext *gdb_ctx, void *user_ctx) --=20 2.20.1