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 5C1DF1E0E1F; Thu, 9 Oct 2025 19:22:41 +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=1760037762; cv=none; b=JC7/jEgRGdruvD2hz+zn5pUqyqEqdWTHrf7DYD72N8j8mjTmu5TSmUOMSmg3fXi2GGXIixhlgdOy+I4wR8nb8sN+arR4eUNT9pPToWWo3P+GLhSj1pkflIXQ5+IVQebzpXs7Webtfm348izCFG36FIciwyq0DfaZkRwHirtke90= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760037762; c=relaxed/simple; bh=Fk9cSATlVh21jfOWJypHKa1pvdY171ZyTYISHIUTdRM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=KhYCkQIS6x7/DZ7lg9x/CqAn7CfEAlDy49LFCNnwzdIs//sGywr7RS74nveaSfYSG3h15l+2PTynFc73EZP6Am9dlu8WDMCcX77tt3HU8dCso8G8KJ3iksGP8skGbSyQU5YDIifBAJFTlmrutLiqCCkvNMSz8mY1domVXlJJ8ic= 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=Gkmh54JQ; 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="Gkmh54JQ" Received: from [100.64.193.78] (unknown [40.65.108.177]) by linux.microsoft.com (Postfix) with ESMTPSA id 5C6F32038B77; Thu, 9 Oct 2025 12:22:40 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 5C6F32038B77 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1760037760; bh=9iGJljTf82FVEBJBrTnWOZAa2x8x399u8WqlqZg1Nts=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Gkmh54JQE50kAWCVp2RcNolcOBgrFEggJQqobf1OqmweT2aWs9VuBnqzWZ9hRW1NJ cyvqBlHM7P24Qv/q5kClXCzZqV8uZ88gck25RFkoN4jLuUHiLSW1gmn9A5jamrTLm5 +Jbr3mEu3Hy4VafO+ARm+dOKrMq5urbw+669DuXo= Message-ID: Date: Thu, 9 Oct 2025 12:22:39 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] hyperv: Add definitions for MSHV sleep state configuration To: Praveen K Paladugu , kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, tglx@linutronix.de, mingo@redhat.com, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, arnd@arndb.de Cc: anbelski@linux.microsoft.com References: <20251009160501.6356-1-prapal@linux.microsoft.com> <20251009160501.6356-2-prapal@linux.microsoft.com> Content-Language: en-US From: Nuno Das Neves In-Reply-To: <20251009160501.6356-2-prapal@linux.microsoft.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/9/2025 8:58 AM, Praveen K Paladugu wrote: > Add the definitions required to configure sleep states in mshv hypervsior. > > Signed-off-by: Praveen K Paladugu > Co-developed-by: Anatol Belski > Signed-off-by: Anatol Belski > --- > include/hyperv/hvgdk_mini.h | 4 +++- > include/hyperv/hvhdk_mini.h | 33 +++++++++++++++++++++++++++++++++ > 2 files changed, 36 insertions(+), 1 deletion(-) > > diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h > index 77abddfc750e..943df5d292f2 100644 > --- a/include/hyperv/hvgdk_mini.h > +++ b/include/hyperv/hvgdk_mini.h > @@ -464,18 +464,20 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_ASSIST_PAGE */ > #define HVCALL_RESET_DEBUG_SESSION 0x006b > #define HVCALL_MAP_STATS_PAGE 0x006c > #define HVCALL_UNMAP_STATS_PAGE 0x006d > +#define HVCALL_SET_SYSTEM_PROPERTY 0x006f > #define HVCALL_ADD_LOGICAL_PROCESSOR 0x0076 > #define HVCALL_GET_SYSTEM_PROPERTY 0x007b > #define HVCALL_MAP_DEVICE_INTERRUPT 0x007c > #define HVCALL_UNMAP_DEVICE_INTERRUPT 0x007d > #define HVCALL_RETARGET_INTERRUPT 0x007e > +#define HVCALL_ENTER_SLEEP_STATE 0x0084 > #define HVCALL_NOTIFY_PORT_RING_EMPTY 0x008b > #define HVCALL_REGISTER_INTERCEPT_RESULT 0x0091 > #define HVCALL_ASSERT_VIRTUAL_INTERRUPT 0x0094 > #define HVCALL_CREATE_PORT 0x0095 > #define HVCALL_CONNECT_PORT 0x0096 > #define HVCALL_START_VP 0x0099 > -#define HVCALL_GET_VP_INDEX_FROM_APIC_ID 0x009a > +#define HVCALL_GET_VP_INDEX_FROM_APIC_ID 0x009a > #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af > #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0 > #define HVCALL_SIGNAL_EVENT_DIRECT 0x00c0 > diff --git a/include/hyperv/hvhdk_mini.h b/include/hyperv/hvhdk_mini.h > index 858f6a3925b3..8fa86c014c25 100644 > --- a/include/hyperv/hvhdk_mini.h > +++ b/include/hyperv/hvhdk_mini.h > @@ -114,10 +114,24 @@ enum hv_snp_status { > > enum hv_system_property { > /* Add more values when needed */ > + HV_SYSTEM_PROPERTY_SLEEP_STATE = 3, > HV_SYSTEM_PROPERTY_SCHEDULER_TYPE = 15, > HV_DYNAMIC_PROCESSOR_FEATURE_PROPERTY = 21, > }; > > +enum hv_sleep_state { > + HV_SLEEP_STATE_S1 = 1, > + HV_SLEEP_STATE_S2 = 2, > + HV_SLEEP_STATE_S3 = 3, > + HV_SLEEP_STATE_S4 = 4, > + HV_SLEEP_STATE_S5 = 5, > + /* > + * After hypervisor has received this, any follow up sleep > + * state registration requests will be rejected. > + */ > + HV_SLEEP_STATE_LOCK = 6 > +}; > + > enum hv_dynamic_processor_feature_property { > /* Add more values when needed */ > HV_X64_DYNAMIC_PROCESSOR_FEATURE_MAX_ENCRYPTED_PARTITIONS = 13, > @@ -145,6 +159,25 @@ struct hv_output_get_system_property { > }; > } __packed; > > +struct hv_sleep_state_info { > + u32 sleep_state; /* enum hv_sleep_state */ > + u8 pm1a_slp_typ; > + u8 pm1b_slp_typ; > +} __packed; > + > +struct hv_input_set_system_property { > + u32 property_id; /* enum hv_system_property */ > + u32 reserved; > + union { > + /* More fields to be filled in when needed */ > + struct hv_sleep_state_info set_sleep_state_info; > + }; > +} __packed; > + > +struct hv_input_enter_sleep_state { /* HV_INPUT_ENTER_SLEEP_STATE */ > + u32 sleep_state; /* enum hv_sleep_state */ > +} __packed; > + > struct hv_input_map_stats_page { > u32 type; /* enum hv_stats_object_type */ > u32 padding; Reviewed-by: Nuno Das Neves