From: <ankita@nvidia.com>
To: <ankita@nvidia.com>, <jgg@ziepe.ca>, <yishaih@nvidia.com>,
<skolothumtho@nvidia.com>, <kevin.tian@intel.com>,
<alex@shazbot.org>, <aniketa@nvidia.com>, <vsethi@nvidia.com>,
<mochs@nvidia.com>
Cc: <Yunxiang.Li@amd.com>, <yi.l.liu@intel.com>,
<zhangdongdong@eswincomputing.com>, <avihaih@nvidia.com>,
<bhelgaas@google.com>, <peterx@redhat.com>, <pstanner@redhat.com>,
<apopple@nvidia.com>, <kvm@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <cjia@nvidia.com>,
<kwankhede@nvidia.com>, <targupta@nvidia.com>, <zhiw@nvidia.com>,
<danw@nvidia.com>, <dnigam@nvidia.com>, <kjaju@nvidia.com>
Subject: [PATCH v2 4/6] vfio: export vfio_find_cap_start
Date: Tue, 18 Nov 2025 07:44:20 +0000 [thread overview]
Message-ID: <20251118074422.58081-5-ankita@nvidia.com> (raw)
In-Reply-To: <20251118074422.58081-1-ankita@nvidia.com>
From: Ankit Agrawal <ankita@nvidia.com>
Export vfio_find_cap_start to be used by the nvgrace-gpu module.
This would be used to determine GPU FLR requests.
Signed-off-by: Ankit Agrawal <ankita@nvidia.com>
---
drivers/vfio/pci/vfio_pci_config.c | 3 ++-
include/linux/vfio_pci_core.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index 333fd149c21a..50390189b586 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1114,7 +1114,7 @@ int __init vfio_pci_init_perm_bits(void)
return ret;
}
-static int vfio_find_cap_start(struct vfio_pci_core_device *vdev, int pos)
+int vfio_find_cap_start(struct vfio_pci_core_device *vdev, int pos)
{
u8 cap;
int base = (pos >= PCI_CFG_SPACE_SIZE) ? PCI_CFG_SPACE_SIZE :
@@ -1130,6 +1130,7 @@ static int vfio_find_cap_start(struct vfio_pci_core_device *vdev, int pos)
return pos;
}
+EXPORT_SYMBOL_GPL(vfio_find_cap_start);
static int vfio_msi_config_read(struct vfio_pci_core_device *vdev, int pos,
int count, struct perm_bits *perm,
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h
index 058acded858b..a097a66485b4 100644
--- a/include/linux/vfio_pci_core.h
+++ b/include/linux/vfio_pci_core.h
@@ -132,6 +132,7 @@ void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
int vfio_pci_core_setup_barmap(struct vfio_pci_core_device *vdev, int bar);
pci_ers_result_t vfio_pci_core_aer_err_detected(struct pci_dev *pdev,
pci_channel_state_t state);
+int vfio_find_cap_start(struct vfio_pci_core_device *vdev, int pos);
ssize_t vfio_pci_core_do_io_rw(struct vfio_pci_core_device *vdev, bool test_mem,
void __iomem *io, char __user *buf,
loff_t off, size_t count, size_t x_start,
--
2.34.1
next prev parent reply other threads:[~2025-11-18 7:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-18 7:44 [PATCH v2 0/6] vfio/nvgrace-gpu: Support huge PFNMAP and wait for GPU ready post reset ankita
2025-11-18 7:44 ` [PATCH v2 1/6] vfio/nvgrace-gpu: Use faults to map device memory ankita
2025-11-18 7:44 ` [PATCH v2 2/6] vfio: export function to map the VMA ankita
2025-11-18 7:44 ` [PATCH v2 3/6] vfio/nvgrace-gpu: Add support for huge pfnmap ankita
2025-11-18 7:44 ` ankita [this message]
2025-11-18 7:44 ` [PATCH v2 5/6] vfio/nvgrace-gpu: split the code to wait for GPU ready ankita
2025-11-18 7:44 ` [PATCH v2 6/6] vfio/nvgrace-gpu: wait for the GPU mem to be ready ankita
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