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From: <eagostini@nvidia.com>
To: <dev@dpdk.org>
CC: Elena Agostini <eagostini@nvidia.com>
Subject: [PATCH v2 1/2] gpudev: add GPU page_size to info
Date: Tue, 8 Mar 2022 23:59:47 +0000
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Errors-To: dev-bounces@dpdk.org
From: Elena Agostini <eagostini@nvidia.com>
Page alignment on the GPU can be different from
the CPU page alignment.
Fixes: 9b8cae4d991e ("gpudev: use CPU mapping in communication list")
Signed-off-by: Elena Agostini <eagostini@nvidia.com>
---
drivers/gpu/cuda/cuda.c | 4 ++++
lib/gpudev/rte_gpudev.h | 2 ++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/cuda/cuda.c b/drivers/gpu/cuda/cuda.c
index cf9e59535c..8505d39d64 100644
--- a/drivers/gpu/cuda/cuda.c
+++ b/drivers/gpu/cuda/cuda.c
@@ -523,6 +523,8 @@ cuda_dev_info_get(struct rte_gpu *dev, struct rte_gpu_info *info)
}
dev->mpshared->info.total_memory = parent_info.total_memory;
+ dev->mpshared->info.page_size = parent_info.page_size;
+
/*
* GPU Device private info
*/
@@ -1173,6 +1175,8 @@ cuda_gpu_probe(__rte_unused struct rte_pci_driver *pci_drv, struct rte_pci_devic
return -rte_errno;
}
+ dev->mpshared->info.page_size = (size_t)GPU_PAGE_SIZE;
+
/*
* GPU Device private info
*/
diff --git a/lib/gpudev/rte_gpudev.h b/lib/gpudev/rte_gpudev.h
index 7e2401a4b7..971aeacfff 100644
--- a/lib/gpudev/rte_gpudev.h
+++ b/lib/gpudev/rte_gpudev.h
@@ -61,6 +61,8 @@ struct rte_gpu_info {
size_t total_memory;
/* Local NUMA memory ID. -1 if unknown. */
int16_t numa_node;
+ /* Get GPU memory page size. */
+ size_t page_size;
};
/** Flags passed in notification callback. */
--
2.17.1