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 5E244242D9D; Sat, 18 Jul 2026 02:20:16 +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=1784341217; cv=none; b=AoUywtlkv+XcEVrrhiskPtLLb9MZ47EqoZHj+uhX4XDJsaVQyc+AhkreBzYk0kgmOcqVzEjvjG18iGPwVMXRIpsyFJfX8TGfmz0trrWvaDwjgGNykUceEXppt31V+AbrWjFNduTukCMEukTIX29BBjRa5TNUm4PGr5THGJ3uIwA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784341217; c=relaxed/simple; bh=HteEkaSp4wVOVK9nw0E0kiL5yJI37zhJ2LZk6JsNuX8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BkizfGYIDSeCs9xcLV4fvD05HhbfuxXK7JLGoWozv/QSiVuLVKtUIN9NfAXNh4W+RJMl6AHaRcuMDG+67swnQKPd40uynHmUnciIdNYsS2SYOXGuEWmowh8SuZyRgW1NrZ6IkG2iG/DaZug0U5PIbiJsbnaiUTKnq5/LrrlNklM= 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=dSc2/Wzw; 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="dSc2/Wzw" Received: from mrdev.corp.microsoft.com (unknown [40.86.181.13]) by linux.microsoft.com (Postfix) with ESMTPSA id 6E66420B716C; Fri, 17 Jul 2026 19:20:04 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 6E66420B716C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1784341205; bh=hSQHhkvihXETyUD20dRGf5jzacsSTIZgqTCFlZVNEAI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dSc2/Wzwv52COrskPRmfHSb6gFoCIkvamBfZcOOh3PYM4NoZHa0tGN5lnlPNxsfhG euoKKerSVTcgrBXhR7nk6py0bCLi7U/qcxyCnJTI4GR5ZYLK4+66CY0v7GxUDO3XOP ZLf+GUNvwl6vGA0p3ufbpK2FhsvRt8C5y1cQQztI= From: Mukesh R To: hpa@zytor.com, robin.murphy@arm.com, robh@kernel.org, wei.liu@kernel.org, mrathor@linux.microsoft.com, mhklinux@outlook.com, muislam@microsoft.com, namjain@linux.microsoft.com, magnuskulke@linux.microsoft.com, anbelski@linux.microsoft.com, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, iommu@lists.linux.dev, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org Cc: kys@microsoft.com, haiyangz@microsoft.com, decui@microsoft.com, longli@microsoft.com, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, joro@8bytes.org, will@kernel.org, lpieralisi@kernel.org, kwilczynski@kernel.org, bhelgaas@google.com, arnd@arndb.de, jacob.pan@linux.microsoft.com Subject: [PATCH V4 6/9] PCI: hv: Export hv_build_devid_type_pci() and change return type Date: Fri, 17 Jul 2026 19:19:46 -0700 Message-ID: <20260718021949.926306-7-mrathor@linux.microsoft.com> X-Mailer: git-send-email 2.51.2.vfs.0.1 In-Reply-To: <20260718021949.926306-1-mrathor@linux.microsoft.com> References: <20260718021949.926306-1-mrathor@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: 8bit On Hyper-V, most hypercalls related to PCI passthru to map/unmap regions, interrupts, etc need a device ID as a parameter. This device ID refers to that specific device during the lifetime of passthru. So, make hv_build_devid_type_pci() public and change return type to u64 to enforce it's size. Signed-off-by: Mukesh R Reviewed-by: Souradeep Chakrabarti --- arch/x86/hyperv/irqdomain.c | 9 +++++---- arch/x86/include/asm/mshyperv.h | 6 ++++++ 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/x86/hyperv/irqdomain.c b/arch/x86/hyperv/irqdomain.c index b3ad50a874dc..8780573a4332 100644 --- a/arch/x86/hyperv/irqdomain.c +++ b/arch/x86/hyperv/irqdomain.c @@ -112,7 +112,7 @@ static int get_rid_cb(struct pci_dev *pdev, u16 alias, void *data) return 0; } -static union hv_device_id hv_build_devid_type_pci(struct pci_dev *pdev) +u64 hv_build_devid_type_pci(struct pci_dev *pdev) { int pos; union hv_device_id hv_devid; @@ -172,8 +172,9 @@ static union hv_device_id hv_build_devid_type_pci(struct pci_dev *pdev) } out: - return hv_devid; + return hv_devid.as_uint64; } +EXPORT_SYMBOL_GPL(hv_build_devid_type_pci); /* * hv_map_msi_interrupt() - Map the MSI IRQ in the hypervisor. @@ -196,7 +197,7 @@ int hv_map_msi_interrupt(struct irq_data *data, msidesc = irq_data_get_msi_desc(data); pdev = msi_desc_to_pci_dev(msidesc); - hv_devid = hv_build_devid_type_pci(pdev); + hv_devid.as_uint64 = hv_build_devid_type_pci(pdev); cpu = cpumask_first(irq_data_get_effective_affinity_mask(data)); return hv_map_interrupt(hv_devid, false, cpu, cfg->vector, @@ -271,7 +272,7 @@ static int hv_unmap_msi_interrupt(struct pci_dev *pdev, { union hv_device_id hv_devid; - hv_devid = hv_build_devid_type_pci(pdev); + hv_devid.as_uint64 = hv_build_devid_type_pci(pdev); return hv_unmap_interrupt(hv_devid.as_uint64, irq_entry); } diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index f64393e853ee..8ebbd1cb7c8c 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -248,6 +248,12 @@ void hv_crash_asm_end(void); static inline void hv_root_crash_init(void) {} #endif /* CONFIG_MSHV_ROOT && CONFIG_CRASH_DUMP */ +#ifdef CONFIG_PCI_MSI +u64 hv_build_devid_type_pci(struct pci_dev *pdev); +#else +static inline u64 hv_build_devid_type_pci(struct pci_dev *pdev) { return 0; } +#endif + #else /* CONFIG_HYPERV */ static inline void hyperv_init(void) {} static inline void hyperv_setup_mmu_ops(void) {} -- 2.51.2.vfs.0.1