From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 608FE1F3D3F; Fri, 27 Dec 2024 18:31:57 +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=1735324318; cv=none; b=kUDEiDp7W2ts8WuOkIFvyrrkYJ6eI/ku/bSq0pHj/1eKrx8iXZvtbw2ajHavMYjB2dwG4wBpoluDbzCkvzPufaAXfFc+4rlsNZhM4a1wOBsk6+XNJVTH/mNnvwT9bkwwiDJMgG0QMUSepK6WPZrYl2HWnar9pno0D1tiovxm590= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735324318; c=relaxed/simple; bh=4Jyuc+ffyw2DPcfTMSQ1RAZin8tjZuGQZQsUwjg4JRM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mZl8NuqnOkd0sgkY2cYejZAr0BdBMKLTQeIgJm3+ocJ1kcT6Ap4zsy6ICDbxMOXals6li2gMR4J9NOBtYIzRpkhemWRCS+oh91ItOi+7awYM8LrYwanJd2vQRA6v46YSIpjBOo3fEXeHkdH/SNMq2VzIO+eN5WBmOPh+5ZOBZ8U= 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=kJ0UAyzL; 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="kJ0UAyzL" Received: from romank-3650.corp.microsoft.com (unknown [131.107.160.188]) by linux.microsoft.com (Postfix) with ESMTPSA id ABEDE203EC3C; Fri, 27 Dec 2024 10:31:56 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com ABEDE203EC3C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1735324316; bh=/ype7uZEpe5xHc678iTj/2AT9nHkiZEOccSLzIQb1I4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kJ0UAyzLCLcvujCLicUTafOri7Ih75fzDkcMoWY7zEZ4usZFibh+1wm8CIgH/uCnv SUHMbr5oTyt+tgMKlyUXhfQJsm7AZT7JwZPit0FlBfWKUTvH0jLOJQVcN7NGf3irBE q1698ABSjfOcovYfSvMloLgtoj9Ql9bQxCBxNgVw= 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 v4 1/5] hyperv: Define struct hv_output_get_vp_registers Date: Fri, 27 Dec 2024 10:31:51 -0800 Message-Id: <20241227183155.122827-2-romank@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241227183155.122827-1-romank@linux.microsoft.com> References: <20241227183155.122827-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 | 65 +++++++++++++++++++++++++++++++++++-- 1 file changed, 63 insertions(+), 2 deletions(-) diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h index db3d1aaf7330..c2f5cc231dce 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; +#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; +#endif + union hv_input_vtl { u8 as_uint8; struct { @@ -1068,6 +1072,41 @@ union hv_dispatch_suspend_register { } __packed; }; +#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; }; +#endif + union hv_register_value { struct hv_u128 reg128; u64 reg64; @@ -1098,13 +1139,33 @@ union hv_register_value { u16 reg16; u8 reg8; - 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; +#endif +#if 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_exception_event; +#endif +}; + +/* + * NOTE: Linux helper struct - NOT from Hyper-V code. + * DECLARE_FLEX_ARRAY() needs to be wrapped into + * a structure and have at least one more member besides + * DECLARE_FLEX_ARRAY. + */ +struct hv_output_get_vp_registers { + struct { + DECLARE_FLEX_ARRAY(union hv_register_value, values); + struct {} values_end; + }; }; #if defined(CONFIG_ARM64) -- 2.34.1