From nobody Fri Apr 3 06:26:52 2026 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6659E22D4DC; Wed, 18 Feb 2026 14:19:35 +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=1771424376; cv=none; b=JMgv0F+WfyIi9wjhdCVNAtJN33vHm8jHFQTYRe4FzBw/5CYGJc7yxmkP7kvgsslq85qD/kxZARyH9LshYhtqt+IsJVt2qrkqFMdGBydI7F10vgVA1oYjHGyuRSsg8QZajDtptwMTciPLvmW2gxuMh3TTpEVxrYwxmaQrx1gZHbc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771424376; c=relaxed/simple; bh=S6h2Z6sUOywlDn7IJuN9Y5s0WcCM6im/R9HDxeq7vqk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=qSYUuANIeHXpLqJUtILaSVxSTt8e+OmTeUMmHH0OBVjpISSCWUzTRlsmowLkFtTuP5j1vopGc03xbgjyURF7LJT9mEw7hBappwLgM9r7BrGCVtZ9xdpgOZj/ACyN96O7z2cu/eGkxZiL0iQGGnBXsDoFnTWFxcOJvxusP0irQqY= 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=LsUkIxIj; 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="LsUkIxIj" Received: from DESKTOP-TUU1E5L.localdomain (unknown [167.220.208.56]) by linux.microsoft.com (Postfix) with ESMTPSA id 06A4D20B6F00; Wed, 18 Feb 2026 06:19:32 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 06A4D20B6F00 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1771424374; bh=EwcGjp87EUVkv+YxE50a+yvbnnXMcjBmV8/MsL4EDp8=; h=From:To:Cc:Subject:Date:From; b=LsUkIxIjqFbreiybDZRoPdcsgH2rXcD/431VVuZRKmlzKi3k9bpBuXg+BlItzA0T/ WrZsQvhY9KP+sKYBv+pEN+VDRj/gZD0onK5Fc4RnSuDaQV4NJLqi/+TKvzXqmlh2pG jw8re7flIbmfMRoZ+5re+nx7w7GPzG2vye4uS3W8= From: Magnus Kulke To: wei.liu@kernel.org, haiyangz@microsoft.com, kys@microsoft.com, decui@microsoft.com, linux-hyperv@vger.kernel.org Cc: skinsburskii@linux.microsoft.com, magnuskulke@microsoft.com, linux-kernel@vger.kernel.org, Magnus Kulke Subject: [PATCH] mshv: expose hv_call_scrub_partition Date: Wed, 18 Feb 2026 15:19:11 +0100 Message-Id: <20260218141911.555592-1-magnuskulke@linux.microsoft.com> X-Mailer: git-send-email 2.34.1 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" This hv call needs to be exposed for VMMs to be able to soft-reboot guests. It will reset APIC and state of para-virtualized devices like SynIC. Signed-off-by: Magnus Kulke --- drivers/hv/mshv_root_main.c | 1 + include/hyperv/hvgdk_mini.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c index cb2729f99e2c5..7c13d5f36437c 100644 --- a/drivers/hv/mshv_root_main.c +++ b/drivers/hv/mshv_root_main.c @@ -143,6 +143,7 @@ static u16 mshv_passthru_hvcalls[] =3D { HVCALL_READ_GPA, HVCALL_WRITE_GPA, HVCALL_CLEAR_VIRTUAL_INTERRUPT, + HVCALL_SCRUB_PARTITION, HVCALL_REGISTER_INTERCEPT_RESULT, HVCALL_ASSERT_VIRTUAL_INTERRUPT, HVCALL_GET_GPA_PAGES_ACCESS_STATES, diff --git a/include/hyperv/hvgdk_mini.h b/include/hyperv/hvgdk_mini.h index f98eb41342d40..9120fcf0161a4 100644 --- a/include/hyperv/hvgdk_mini.h +++ b/include/hyperv/hvgdk_mini.h @@ -501,6 +501,7 @@ union hv_vp_assist_msr_contents { /* HV_REGISTER_VP_AS= SIST_PAGE */ #define HVCALL_ENTER_SLEEP_STATE 0x0084 #define HVCALL_NOTIFY_PARTITION_EVENT 0x0087 #define HVCALL_NOTIFY_PORT_RING_EMPTY 0x008b +#define HVCALL_SCRUB_PARTITION 0x008d #define HVCALL_REGISTER_INTERCEPT_RESULT 0x0091 #define HVCALL_ASSERT_VIRTUAL_INTERRUPT 0x0094 #define HVCALL_CREATE_PORT 0x0095 --=20 2.34.1