From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C8AB83769E2; Wed, 20 May 2026 07:40:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779262851; cv=none; b=RmyBiMv9Wblhxt+Ufrz6uEyPJovlMF82uvxGg9RoMf8//HdKDKotbA64sMnNtXjuKjrzvAnE6Aq5aSMm79G6bOHIo2v5+gs4DzJI1rx3/phQmsqs6jPw1IVtlVCOMJstFPRnaQ0OLhOVScFe/jC3aS6HlxGT4MWSAR6e3zlKQUk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779262851; c=relaxed/simple; bh=y+aXfo7MThsKoSTC11Hox/ISqSIaH/XtNE6H5rBLdx0=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=N+JjYxJ9J9Dd9pO1OUM8aW7SejatpOeR1KdLFBul1FpFPq1iG3BDdMs62HadEPlYa6GGkQJt12g32dbnSE+ZYXkIDJhRk9rXUMw8U278uoidS9P6+KO3Mxo7JarjNghJQAX1PFOtQCePa5HBe0LVTCHesUHmXK7QEck7nx3bOfU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KpJTeR+W; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KpJTeR+W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BF911F000E9; Wed, 20 May 2026 07:40:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779262850; bh=pzQwDfcQIVPJa3rxVTObv0nSnU3fQuUDtGie2NqZXmE=; h=From:To:Cc:Subject:Date; b=KpJTeR+WDCC8VRKlIi2uDbbRLokYhbq+GBO18djndOea0fM/iG0RBK0jrGlv81PFW ok2DBjR4RyWbbwo6UcfK6kIBb2jywTJomFYkY2hFRu/+sHEmwX0/92jOXrO1s/Lwox zRUt7+rqjucZ7mOJSFHaaBYuZBLhZx7Fe2eng32db37qfVQeXFvXW5tl7ErR8NNC8p hM7kkqh2quNSBtYXF20+SV/o1sCIywVMRtVwN10W8QaOwbEKJVw9jDJr6MkYvVQzI4 SCAphJAx2Mx1BsCRS+eZK1NyBpaQhmI6ztxRS8skNtFZnnAHVNJxaxnQ0DsmvKhkye ykzwfTEeRsKwA== From: Arnd Bergmann To: "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , "Anirudh Rayabharam (Microsoft)" , Jork Loeser , Stanislav Kinsburskii Cc: Arnd Bergmann , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] mshv: add vmbus dependency Date: Wed, 20 May 2026 09:40:12 +0200 Message-Id: <20260520074044.923728-1-arnd@kernel.org> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnd Bergmann When the vmbus driver is not part of the kernel, the mvhv_root driver now fails to link: ERROR: modpost: "hv_vmbus_exists" [drivers/hv/mshv_root.ko] undefined! Avoid this by adding an explicit Kconfig dependency. Note that stubbing out the hv_vmbus_exists() based on configuration would also work for some cases, but not with MSHV_ROOT=y and HYPERV_VMBUS=m. Fixes: f1a9e67c1138 ("mshv: limit SynIC management to MSHV-owned resources") Signed-off-by: Arnd Bergmann --- drivers/hv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig index 52af086fdeb2..21193b571a80 100644 --- a/drivers/hv/Kconfig +++ b/drivers/hv/Kconfig @@ -75,6 +75,7 @@ config MSHV_ROOT # e.g. When withdrawing memory, the hypervisor gives back 4k pages in # no particular order, making it impossible to reassemble larger pages depends on PAGE_SIZE_4KB + depends on HYPERV_VMBUS select EVENTFD select VIRT_XFER_TO_GUEST_WORK select HMM_MIRROR -- 2.39.5