From nobody Thu Dec 18 21:51:18 2025 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0EC03145FE0; Thu, 26 Dec 2024 20:30:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735245054; cv=none; b=PSn0z8wmRnuW8WTI7l7EWgk0EeqDLJZLIw2GM6HpT8lteMlH8OwfNwhfMiXV7vCy19WYCV/BPS0K3sEdoeWmIOL2VBCzkGA7CHMvz4K8fYzxbUGoowDx1pF9XwPDR19u7GFXLroBH3lvvUfY8jP3r3hR5Dz6TZPII19oVS7WXp0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735245054; c=relaxed/simple; bh=NRkCjRnkhySE+BcClf+onZvPISWdYGLXxqfdEBq6MW4=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=gYzLolvuahwskHQB+pJ109Ve/JEpNW7cAc80HjfQLJPVYva/WbP02R8FtDtnLJLSn57eck6NKnGSaKhZaEdvn8njEf0GmkB0x2Six3Brm3e9pV9HenWlC898iz0IaE16KeU3tXmYriGawm0qq4dcH3c1geZZupGreUcx1RxY8xI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=kWXnLmSd; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="kWXnLmSd" Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id 7908E203EC24; Thu, 26 Dec 2024 12:30:52 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 7908E203EC24 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1735245052; bh=ry0dde5x4r+6U0CVAjvuGCMTA9d6rF8pmhm+rOPKAfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kWXnLmSdDLLQhzu9vL74ileaK5i9Fuy0Y6/pZBPBtHgUX+GhKSTQEj6g/ySOecYdP fgLgriLtzp2Mmx8c8S8ijaOFdKYPLeMM5AH9W8xUqhNkYDzANXe6Q/Wg9IxslSEtk6 dhNpy55rV1n/SGOKZp+NVHQXiQh3c4GYSC9PJ8zw= From: Roman Kisel To: hpa@zytor.com, kys@microsoft.com, bp@alien8.de, dave.hansen@linux.intel.com, decui@microsoft.com, eahariha@linux.microsoft.com, haiyangz@microsoft.com, mingo@redhat.com, mhklinux@outlook.com, nunodasneves@linux.microsoft.com, tglx@linutronix.de, tiala@microsoft.com, wei.liu@kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Cc: apais@microsoft.com, benhill@microsoft.com, ssengar@microsoft.com, sunilmut@microsoft.com, vdso@hexbites.dev Subject: [PATCH v2 1/3] hyperv: Define struct hv_output_get_vp_registers Date: Thu, 26 Dec 2024 12:30:48 -0800 Message-Id: <20241226203050.800524-2-romank@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241226203050.800524-1-romank@linux.microsoft.com> References: <20241226203050.800524-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" There is no definition of the output structure for the GetVpRegisters hypercall. Hence, using the hypercall is not possible when the output value has some structure to it. Even getting a datum of a primitive type reads as ad-hoc without that definition. Define struct hv_output_get_vp_registers to enable using the GetVpRegisters hypercall. Make provisions for all supported architectures. No functional changes. Signed-off-by: Roman Kisel --- include/hyperv/hvgdk_mini.h | 58 +++++++++++++++++++++++++++++++++++-- 1 file changed, 56 insertions(+), 2 deletions(-) diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h index db3d1aaf7330..31c11550af73 100644 --- a/include/hyperv/hvgdk_mini.h +++ b/include/hyperv/hvgdk_mini.h @@ -781,6 +781,8 @@ struct hv_timer_message_payload { __u64 delivery_time; /* When the message was delivered */ } __packed; =20 +#if defined(CONFIG_X86) + struct hv_x64_segment_register { u64 base; u32 limit; @@ -807,6 +809,8 @@ struct hv_x64_table_register { u64 base; } __packed; =20 +#endif + union hv_input_vtl { u8 as_uint8; struct { @@ -1068,6 +1072,41 @@ union hv_dispatch_suspend_register { } __packed; }; =20 +#if defined(CONFIG_ARM64) + +union hv_arm64_pending_interruption_register { + u64 as_uint64; + struct { + u64 interruption_pending : 1; + u64 interruption_type : 1; + u64 reserved : 30; + u32 error_code; + } __packed; +}; + +union hv_arm64_interrupt_state_register { + u64 as_uint64; + struct { + u64 interrupt_shadow : 1; + u64 reserved : 63; + } __packed; +}; + +union hv_arm64_pending_synthetic_exception_event { + u64 as_uint64[2]; + struct { + u32 event_pending : 1; + u32 event_type : 3; + u32 reserved : 4; + u32 exception_type; + u64 context; + } __packed; +}; + +#endif + +#if defined(CONFIG_X86) + union hv_x64_interrupt_state_register { u64 as_uint64; struct { @@ -1091,6 +1130,8 @@ union hv_x64_pending_interruption_register { } __packed; }; =20 +#endif + union hv_register_value { struct hv_u128 reg128; u64 reg64; @@ -1098,13 +1139,26 @@ union hv_register_value { u16 reg16; u8 reg8; =20 - struct hv_x64_segment_register segment; - struct hv_x64_table_register table; union hv_explicit_suspend_register explicit_suspend; union hv_intercept_suspend_register intercept_suspend; union hv_dispatch_suspend_register dispatch_suspend; +#if defined(CONFIG_X86) + struct hv_x64_segment_register segment; + struct hv_x64_table_register table; union hv_x64_interrupt_state_register interrupt_state; union hv_x64_pending_interruption_register pending_interruption; +#elif defined(CONFIG_ARM64) + union hv_arm64_pending_interruption_register pending_interruption; + union hv_arm64_interrupt_state_register interrupt_state; + union hv_arm64_pending_synthetic_exception_event pending_synthetic_except= ion_event; +#else + #error "This architecture is not supported" +#endif +}; + +/* NOTE: Linux helper struct - NOT from Hyper-V code */ +struct hv_output_get_vp_registers { + DECLARE_FLEX_ARRAY(union hv_register_value, values); }; =20 #if defined(CONFIG_ARM64) --=20 2.34.1