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GET /api/patches/2196600/?format=api
{ "id": 2196600, "url": "http://patchwork.ozlabs.org/api/patches/2196600/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260215112543.4817-13-mohamed@unpredictable.fr/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "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": "<20260215112543.4817-13-mohamed@unpredictable.fr>", "list_archive_url": null, "date": "2026-02-15T11:25:41", "name": "[v10,12/14] target/arm: hvf: pass through CNTHCTL_EL2 and MDCCINT_EL1", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c372af22d215f63aeb977260439648276eb33ba2", "submitter": { "id": 91318, "url": "http://patchwork.ozlabs.org/api/people/91318/?format=api", "name": "Mohamed Mediouni", "email": "mohamed@unpredictable.fr" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260215112543.4817-13-mohamed@unpredictable.fr/mbox/", "series": [ { "id": 492211, "url": "http://patchwork.ozlabs.org/api/series/492211/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492211", "date": "2026-02-15T11:25:32", "name": "HVF: Add support for platform vGIC and nested virtualisation", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/492211/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196600/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196600/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=unpredictable.fr header.i=@unpredictable.fr\n header.a=rsa-sha256 header.s=sig1 header.b=S11rd9+B;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Sun, 15 Feb 2026 06:26:20 -0500", "from outbound.mr.icloud.com (unknown [127.0.0.2])\n by p00-icloudmta-asmtp-us-west-2a-100-percent-0 (Postfix) with ESMTPS id\n D465A1800164; Sun, 15 Feb 2026 11:26:15 +0000 (UTC)", "from localhost.localdomain (unknown [17.57.152.38])\n by p00-icloudmta-asmtp-us-west-2a-100-percent-0 (Postfix) with ESMTPSA id\n 8DF1B18004DB; Sun, 15 Feb 2026 11:26:13 +0000 (UTC)" ], "Dkim-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr;\n s=sig1; t=1771154776; x=1773746776;\n bh=Y6XyA1f2arTOnceFjb8L6hyLWH6tKlG/yXeOWw4vtXA=;\n h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:x-icloud-hme;\n b=S11rd9+BF5m0GHb+Ac/SsgZ/X5HpRoV+swSBmhYV7UooWSQUlrvjn3TN5elrBLZQinbpOPM64N2Td/QSAgG2W1Voye/APpD8NXu9VdbpJoENDg2fi/pAnzX7QzzyIzI1o6R+XIinkRPGDZL+05IgLMIgky+K1A/Ozu4IlX7HePS/zQDJ3Q7dsT8TJuGeb61bMfI55c3il3hMFrnAXf5dfJYJvoEWE2eq3V9OG/duusP+e0To5M+I2Ngw2Yu5kFEU493NJYyiLvXoQhzI4z8A9uGso/tnFK1v8TssfQkpkRqfTEkpB/4XzMTTNgIXEyqYySYiTnGb9N9gRRXyh8hQbg==", "mail-alias-created-date": "1752046281608", "From": "Mohamed Mediouni <mohamed@unpredictable.fr>", "To": "qemu-devel@nongnu.org", "Cc": "qemu-arm@nongnu.org, Peter Maydell <peter.maydell@linaro.org>,\n Mads Ynddal <mads@ynddal.dk>, Roman Bolshakov <rbolshakov@ddn.com>,\n Phil Dennis-Jordan <phil@philjordan.eu>, Alexander Graf <agraf@csgraf.de>,\n Paolo Bonzini <pbonzini@redhat.com>, Cameron Esfahani <dirty@apple.com>,\n Mohamed Mediouni <mohamed@unpredictable.fr>, =?utf-8?q?Philippe_Mathieu-Dau?=\n\t=?utf-8?q?d=C3=A9?= <philmd@linaro.org>", "Subject": "[PATCH v10 12/14] target/arm: hvf: pass through CNTHCTL_EL2 and\n MDCCINT_EL1", "Date": "Sun, 15 Feb 2026 12:25:41 +0100", "Message-ID": "<20260215112543.4817-13-mohamed@unpredictable.fr>", "X-Mailer": "git-send-email 2.50.1", "In-Reply-To": "<20260215112543.4817-1-mohamed@unpredictable.fr>", "References": "<20260215112543.4817-1-mohamed@unpredictable.fr>", "MIME-Version": "1.0", "Content-Type": "text/plain; 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helo=outbound.mr.icloud.com", "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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-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": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "HVF traps accesses to CNTHCTL_EL2. For nested guests, HVF traps accesses to MDCCINT_EL1.\nPass through those accesses to the Hypervisor.framework library.\n\nSigned-off-by: Mohamed Mediouni <mohamed@unpredictable.fr>\n\nReviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>\nTested-by: Philippe Mathieu-Daudé <philmd@linaro.org>\n---\n target/arm/hvf/hvf.c | 20 ++++++++++++++++++++\n 1 file changed, 20 insertions(+)", "diff": "diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c\nindex f286e6a014..8d537b6201 100644\n--- a/target/arm/hvf/hvf.c\n+++ b/target/arm/hvf/hvf.c\n@@ -296,6 +296,10 @@ void hvf_arm_init_debug(void)\n #define SYSREG_DBGWVR15_EL1 SYSREG(2, 0, 0, 15, 6)\n #define SYSREG_DBGWCR15_EL1 SYSREG(2, 0, 0, 15, 7)\n \n+/* EL2 registers */\n+#define SYSREG_CNTHCTL_EL2 SYSREG(3, 4, 14, 1, 0)\n+#define SYSREG_MDCCINT_EL1 SYSREG(2, 0, 0, 2, 0)\n+\n #define WFX_IS_WFE (1 << 0)\n \n #define TMR_CTL_ENABLE (1 << 0)\n@@ -1368,6 +1372,14 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint64_t *val)\n case SYSREG_OSDLR_EL1:\n /* Dummy register */\n return 0;\n+ case SYSREG_CNTHCTL_EL2:\n+ if (__builtin_available(macOS 15.0, *)) {\n+ assert_hvf_ok(hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTHCTL_EL2, val));\n+ }\n+ return 0;\n+ case SYSREG_MDCCINT_EL1:\n+ assert_hvf_ok(hv_vcpu_get_sys_reg(cpu->accel->fd, HV_SYS_REG_MDCCINT_EL1, val));\n+ return 0;\n case SYSREG_ICC_AP0R0_EL1:\n case SYSREG_ICC_AP0R1_EL1:\n case SYSREG_ICC_AP0R2_EL1:\n@@ -1656,6 +1668,14 @@ static int hvf_sysreg_write(CPUState *cpu, uint32_t reg, uint64_t val)\n case SYSREG_OSDLR_EL1:\n /* Dummy register */\n return 0;\n+ case SYSREG_CNTHCTL_EL2:\n+ if (__builtin_available(macOS 15.0, *)) {\n+ assert_hvf_ok(hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_CNTHCTL_EL2, val));\n+ }\n+ return 0;\n+ case SYSREG_MDCCINT_EL1:\n+ assert_hvf_ok(hv_vcpu_set_sys_reg(cpu->accel->fd, HV_SYS_REG_MDCCINT_EL1, val));\n+ return 0;\n case SYSREG_LORC_EL1:\n /* Dummy register */\n return 0;\n", "prefixes": [ "v10", "12/14" ] }