{"id":818546,"url":"http://patchwork.ozlabs.org/api/patches/818546/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/150642389121.3900.12320775067244184010.stgit@Misha-PC.lan02.inno/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<150642389121.3900.12320775067244184010.stgit@Misha-PC.lan02.inno>","list_archive_url":null,"date":"2017-09-26T11:04:51","name":"[08/43] windbg: hook to wrmsr operation","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"9f71b665f0202e115c5b22345f67622b531d1ffc","submitter":{"id":71645,"url":"http://patchwork.ozlabs.org/api/people/71645/?format=json","name":"Mikhail Abakumov","email":"mikhail.abakumov@ispras.ru"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/150642389121.3900.12320775067244184010.stgit@Misha-PC.lan02.inno/mbox/","series":[{"id":5104,"url":"http://patchwork.ozlabs.org/api/series/5104/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=5104","date":"2017-09-26T11:04:06","name":"Windbg supporting","version":1,"mbox":"http://patchwork.ozlabs.org/series/5104/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/818546/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/818546/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3y1dc56NTVz9t3Z\n\tfor ;\n\tTue, 26 Sep 2017 21:13:25 +1000 (AEST)","from localhost ([::1]:46734 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1dwnnn-000226-R2\n\tfor incoming@patchwork.ozlabs.org; Tue, 26 Sep 2017 07:13:23 -0400","from eggs.gnu.org ([2001:4830:134:3::10]:58966)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1dwnfd-0003Pr-4Z\n\tfor qemu-devel@nongnu.org; Tue, 26 Sep 2017 07:05:01 -0400","from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from ) id 1dwnfZ-0000Cm-O0\n\tfor qemu-devel@nongnu.org; Tue, 26 Sep 2017 07:04:57 -0400","from mail.ispras.ru ([83.149.199.45]:51760)\n\tby eggs.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1dwnfZ-0000CS-Ey\n\tfor qemu-devel@nongnu.org; Tue, 26 Sep 2017 07:04:53 -0400","from Misha-PC.lan02.inno (unknown [85.142.117.226])\n\tby mail.ispras.ru (Postfix) with ESMTPSA id B534C540096;\n\tTue, 26 Sep 2017 14:04:52 +0300 (MSK)"],"From":"Mihail Abakumov ","To":"qemu-devel@nongnu.org","Date":"Tue, 26 Sep 2017 14:04:51 +0300","Message-ID":"<150642389121.3900.12320775067244184010.stgit@Misha-PC.lan02.inno>","In-Reply-To":"<150642384156.3900.3326424823772221077.stgit@Misha-PC.lan02.inno>","References":"<150642384156.3900.3326424823772221077.stgit@Misha-PC.lan02.inno>","User-Agent":"StGit/0.17.1-dirty","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","X-detected-operating-system":"by eggs.gnu.org: GNU/Linux 3.x [fuzzy]","X-Received-From":"83.149.199.45","Subject":"[Qemu-devel] [PATCH 08/43] windbg: hook to wrmsr operation","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"sw@weilnetz.de, lprosek@redhat.com, dovgaluk@ispras.ru,\n\trkagan@virtuozzo.com, pbonzini@redhat.com, den@openvz.org","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"Inserted hook to wrmsr operation. Windows Kernel put address on KPCR struct to fs/gs (x32/x64) register. Needs catch this moment and allow windbg server handle packets.\n\nSigned-off-by: Mihail Abakumov \nSigned-off-by: Pavel Dovgalyuk \nSigned-off-by: Dmitriy Koltunov \n---\n include/exec/windbgstub-utils.h | 3 +++\n include/exec/windbgstub.h | 1 +\n target/i386/misc_helper.c | 3 +++\n windbgstub-utils.c | 8 ++++++++\n windbgstub.c | 8 ++++++++\n 5 files changed, 23 insertions(+)","diff":"diff --git a/include/exec/windbgstub-utils.h b/include/exec/windbgstub-utils.h\nindex 65f336e4bf..90fb766839 100755\n--- a/include/exec/windbgstub-utils.h\n+++ b/include/exec/windbgstub-utils.h\n@@ -62,4 +62,7 @@\n _t; \\\n })\n \n+bool windbg_on_load(void);\n+void windbg_on_exit(void);\n+\n #endif\ndiff --git a/include/exec/windbgstub.h b/include/exec/windbgstub.h\nindex 703fc26b8f..2dbf1b1f13 100755\n--- a/include/exec/windbgstub.h\n+++ b/include/exec/windbgstub.h\n@@ -15,6 +15,7 @@\n #define WINDBG \"windbg\"\n #define WINDBG_DEBUG_ON false\n \n+void windbg_try_load(void);\n int windbg_server_start(const char *device);\n \n #endif\ndiff --git a/target/i386/misc_helper.c b/target/i386/misc_helper.c\nindex 628f64aad5..ec1fcd2899 100644\n--- a/target/i386/misc_helper.c\n+++ b/target/i386/misc_helper.c\n@@ -24,6 +24,7 @@\n #include \"exec/exec-all.h\"\n #include \"exec/cpu_ldst.h\"\n #include \"exec/address-spaces.h\"\n+#include \"exec/windbgstub.h\"\n \n void helper_outb(CPUX86State *env, uint32_t port, uint32_t data)\n {\n@@ -385,6 +386,8 @@ void helper_wrmsr(CPUX86State *env)\n /* XXX: exception? */\n break;\n }\n+\n+ windbg_try_load();\n }\n \n void helper_rdmsr(CPUX86State *env)\ndiff --git a/windbgstub-utils.c b/windbgstub-utils.c\nindex dc5e505c63..b5fb6db3f2 100755\n--- a/windbgstub-utils.c\n+++ b/windbgstub-utils.c\n@@ -10,3 +10,11 @@\n */\n \n #include \"exec/windbgstub-utils.h\"\n+\n+bool windbg_on_load(void)\n+{\n+ return false;\n+}\n+\n+void windbg_on_exit(void)\n+{}\ndiff --git a/windbgstub.c b/windbgstub.c\nindex 378d1b911f..99c3ef9b14 100755\n--- a/windbgstub.c\n+++ b/windbgstub.c\n@@ -39,8 +39,16 @@ static void windbg_chr_receive(void *opaque, const uint8_t *buf, int size)\n }\n }\n \n+void windbg_try_load(void)\n+{\n+ if (windbg_state && !windbg_state->is_loaded) {\n+ windbg_state->is_loaded = windbg_on_load();\n+ }\n+}\n+\n static void windbg_exit(void)\n {\n+ windbg_on_exit();\n g_free(windbg_state);\n }\n \n","prefixes":["08/43"]}