From mboxrd@z Thu Jan 1 00:00:00 1970 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) From: Jon Doron Date: Thu, 2 May 2019 11:15:54 +0300 Message-Id: <20190502081554.5521-28-arilou@gmail.com> In-Reply-To: <20190502081554.5521-1-arilou@gmail.com> References: <20190502081554.5521-1-arilou@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v9 27/27] gdbstub: Add support to write a MSR for KVM target List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: alex.bennee@linaro.org, Jon Doron 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"); 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"); } 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); } +static void handle_set_kvm_write_msr(GdbCmdContext *gdb_ctx, void *user_ctx) +{ + 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[] = { /* Order is important if has same prefix */ { @@ -2302,6 +2323,12 @@ static GdbCmdParseEntry gdb_gen_set_table[] = { .cmd_startswith = 1, .schema = "l0" }, + { + .handler = handle_set_kvm_write_msr, + .cmd = "qemu.kvm.Wrmsr:", + .cmd_startswith = 1, + .schema = "l,L0" + }, }; static void handle_gen_query(GdbCmdContext *gdb_ctx, void *user_ctx) -- 2.20.1