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Enable compilation of module for Ubuntu 22.04 HWE kernels #62

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Merged
hpc-aulmamei merged 3 commits into from
Apr 17, 2026
Merged

Enable compilation of module for Ubuntu 22.04 HWE kernels #62

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03fc9fc
Fix vm_flags setting for kernel >=6.3.0
amd-vserbu Apr 16, 2026
a96d296
Remove incorrect __exit for slash_qdma_exit (called from __init code)
amd-vserbu Apr 16, 2026
185ec62
Updated MODULE_IMPORT_NS usage for kernel >=6.13
amd-vserbu Apr 16, 2026
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6 changes: 6 additions & 0 deletions driver/slash_dmabuf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,7 @@
#include <linux/pci.h>
#include <linux/printk.h>
#include <linux/slab.h>
#include <linux/version.h>

/**
* struct slash_bar_dmabuf_data - Private data attached to each BAR dma-buf.
Expand Down Expand Up @@ -180,8 +181,13 @@ static int slash_bar_dmabuf_mmap(struct dma_buf *dmabuf, struct vm_area_struct *
* VM_DONTCOPY — do not inherit across fork(); BAR register
* mappings should not be silently shared with children.
*/
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 3, 0)
vm_flags_set(vma, VM_PFNMAP | VM_IO | VM_DONTDUMP |
VM_DONTEXPAND | VM_DONTCOPY);
#else
vma->vm_flags |= VM_PFNMAP | VM_IO | VM_DONTDUMP |
VM_DONTEXPAND | VM_DONTCOPY;
#endif

wc = !!(pci_resource_flags(priv->pdev, priv->bar_number) & IORESOURCE_PREFETCH);
vma->vm_page_prot = wc ? pgprot_writecombine(vma->vm_page_prot)
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5 changes: 5 additions & 0 deletions driver/slash_main.c
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Expand Up @@ -49,6 +49,7 @@
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/printk.h>
#include <linux/version.h>

#include "slash_pcie.h"
#include "slash_hotplug_driver.h"
Expand Down Expand Up @@ -126,4 +127,8 @@ MODULE_LICENSE("GPL");
MODULE_AUTHOR("AMD Inc.");
MODULE_DESCRIPTION("SLASH/VRT module");
MODULE_VERSION("1.0");
#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 13, 0)
MODULE_IMPORT_NS("DMA_BUF");
#else
MODULE_IMPORT_NS(DMA_BUF);
#endif
2 changes: 1 addition & 1 deletion driver/slash_qdma.c
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Expand Up @@ -819,7 +819,7 @@ int __init slash_qdma_init(unsigned int num_threads, char *debugfs)
* (which triggers slash_qdma_remove() for each probed device) and then
* shuts down the libqdma library.
*/
void __exit slash_qdma_exit(void)
void slash_qdma_exit(void)
{
SLASH_QDMA_OP_LOG("exit start\n");

Expand Down
2 changes: 1 addition & 1 deletion driver/slash_qdma.h
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Expand Up @@ -59,6 +59,6 @@ int __init slash_qdma_init(unsigned int num_threads, char *debugfs);
* Must be called after slash_pcie_exit() to ensure the control
* function is cleaned up before the QDMA function.
*/
void __exit slash_qdma_exit(void);
void slash_qdma_exit(void);

#endif /* SLASH_QDMA_H */
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