From nobody Mon Feb 9 09:10:13 2026 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3491C3B2BA; Mon, 26 Jan 2026 20:56:05 +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=1769460966; cv=none; b=gMlkkJNhD8xH1Z6WJ7y3V4LkDGYIXbSnYS094E2o5bbv6BKBaMlSodi1ntpQkECtaCPbbloLRbavEQhgDALMUwOjsaYeSOF7JcO16vgFFcZXZiCOWuK3i7cE6J3V96TlQB8dMyrTTUhXDTw/67NM6pyJHUDf5+VAvmqAzqDicGg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769460966; c=relaxed/simple; bh=HFNNVSweFvuB84DU2B4ROhCi6CUVW6aVVK9SMK14epw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dwYnAeuzlv/W2u85ajZ/JQz5fyPtusI8PpHHUxRRdGoj5Uh7w7c7+S0wTrKSflRf0Z5seAOdZHP6t/rpE4rTp4TApimG7gCZDraF5+68J+I5Fnq+XA0RKOUWuAgdN6NzcsiXLkA9y4bdomczSrfrTF4aOea8tVvot9R4gXWwPtk= 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=HIfKaWSU; 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="HIfKaWSU" Received: by linux.microsoft.com (Postfix, from userid 1032) id 190C620B7168; Mon, 26 Jan 2026 12:56:05 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 190C620B7168 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1769460965; bh=ARHwRQoJMl3xBLyBPZgcJm/EEXDHa34ijHjF+rMvoPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HIfKaWSUHNLUNFC9uBoTG5FWZsbeGhfrqL63aGFy6oLhLF+A+opBDEgnw1MYHS5s5 nu9gaArGr8ZfzmGC9C3XkWFvWj8OWfAEtAws8YUNu+wooUGOZxUY//ATOabtL9EhfP jZX2WjNKtMGa1R612KjdJXGoMVmg5scRiMTqiyoQ= From: Nuno Das Neves To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, mhklinux@outlook.com, skinsburskii@linux.microsoft.com Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, prapal@linux.microsoft.com, mrathor@linux.microsoft.com, paekkaladevi@linux.microsoft.com, Nuno Das Neves Subject: [PATCH v5 2/7] mshv: Use typed hv_stats_page pointers Date: Mon, 26 Jan 2026 12:55:58 -0800 Message-ID: <20260126205603.404655-3-nunodasneves@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260126205603.404655-1-nunodasneves@linux.microsoft.com> References: <20260126205603.404655-1-nunodasneves@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" From: Stanislav Kinsburskii Refactor all relevant functions to use struct hv_stats_page pointers instead of void pointers for stats page mapping and unmapping thus improving type safety and code clarity across the Hyper-V stats mapping APIs. Signed-off-by: Stanislav Kinsburskii Signed-off-by: Nuno Das Neves --- drivers/hv/mshv_root.h | 5 +++-- drivers/hv/mshv_root_hv_call.c | 12 +++++++----- drivers/hv/mshv_root_main.c | 8 ++++---- 3 files changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/hv/mshv_root.h b/drivers/hv/mshv_root.h index 3c1d88b36741..05ba1f716f9e 100644 --- a/drivers/hv/mshv_root.h +++ b/drivers/hv/mshv_root.h @@ -307,8 +307,9 @@ int hv_call_disconnect_port(u64 connection_partition_id, int hv_call_notify_port_ring_empty(u32 sint_index); int hv_map_stats_page(enum hv_stats_object_type type, const union hv_stats_object_identity *identity, - void **addr); -int hv_unmap_stats_page(enum hv_stats_object_type type, void *page_addr, + struct hv_stats_page **addr); +int hv_unmap_stats_page(enum hv_stats_object_type type, + struct hv_stats_page *page_addr, const union hv_stats_object_identity *identity); int hv_call_modify_spa_host_access(u64 partition_id, struct page **pages, u64 page_struct_count, u32 host_access, diff --git a/drivers/hv/mshv_root_hv_call.c b/drivers/hv/mshv_root_hv_call.c index 1f93b94d7580..daee036e48bc 100644 --- a/drivers/hv/mshv_root_hv_call.c +++ b/drivers/hv/mshv_root_hv_call.c @@ -890,9 +890,10 @@ hv_stats_get_area_type(enum hv_stats_object_type type, * caller should check for this case and instead fallback to the SELF area * alone. */ -static int hv_call_map_stats_page(enum hv_stats_object_type type, - const union hv_stats_object_identity *identity, - void **addr) +static int +hv_call_map_stats_page(enum hv_stats_object_type type, + const union hv_stats_object_identity *identity, + struct hv_stats_page **addr) { unsigned long flags; struct hv_input_map_stats_page *input; @@ -942,7 +943,7 @@ static int hv_call_map_stats_page(enum hv_stats_object_= type type, =20 int hv_map_stats_page(enum hv_stats_object_type type, const union hv_stats_object_identity *identity, - void **addr) + struct hv_stats_page **addr) { int ret; struct page *allocated_page =3D NULL; @@ -990,7 +991,8 @@ static int hv_call_unmap_stats_page(enum hv_stats_objec= t_type type, return hv_result_to_errno(status); } =20 -int hv_unmap_stats_page(enum hv_stats_object_type type, void *page_addr, +int hv_unmap_stats_page(enum hv_stats_object_type type, + struct hv_stats_page *page_addr, const union hv_stats_object_identity *identity) { int ret; diff --git a/drivers/hv/mshv_root_main.c b/drivers/hv/mshv_root_main.c index 1777778f84b8..be5ad0fbfbee 100644 --- a/drivers/hv/mshv_root_main.c +++ b/drivers/hv/mshv_root_main.c @@ -957,7 +957,7 @@ mshv_vp_release(struct inode *inode, struct file *filp) } =20 static void mshv_vp_stats_unmap(u64 partition_id, u32 vp_index, - void *stats_pages[]) + struct hv_stats_page *stats_pages[]) { union hv_stats_object_identity identity =3D { .vp.partition_id =3D partition_id, @@ -972,7 +972,7 @@ static void mshv_vp_stats_unmap(u64 partition_id, u32 v= p_index, } =20 static int mshv_vp_stats_map(u64 partition_id, u32 vp_index, - void *stats_pages[]) + struct hv_stats_page *stats_pages[]) { union hv_stats_object_identity identity =3D { .vp.partition_id =3D partition_id, @@ -1010,7 +1010,7 @@ mshv_partition_ioctl_create_vp(struct mshv_partition = *partition, struct mshv_create_vp args; struct mshv_vp *vp; struct page *intercept_msg_page, *register_page, *ghcb_page; - void *stats_pages[2]; + struct hv_stats_page *stats_pages[2]; long ret; =20 if (copy_from_user(&args, arg, sizeof(args))) @@ -1729,7 +1729,7 @@ static void destroy_partition(struct mshv_partition *= partition) =20 if (hv_scheduler_type =3D=3D HV_SCHEDULER_TYPE_ROOT) mshv_vp_stats_unmap(partition->pt_id, vp->vp_index, - (void **)vp->vp_stats_pages); + vp->vp_stats_pages); =20 if (vp->vp_register_page) { (void)hv_unmap_vp_state_page(partition->pt_id, --=20 2.34.1