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| author | Alexei Starovoitov <ast@kernel.org> | 2024-03-08 09:12:54 -0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2024-03-11 16:58:10 +0100 |
| commit | d7bca9199a27b8690ae1c71dc11f825154af7234 (patch) | |
| tree | bab755c8891d6e8c5868a571a3270cc98c00b99f /drivers/pci | |
| parent | 96b0f5addc7a0d9ed1f4969ca85ed7513cb1ed25 (diff) | |
| download | lwn-d7bca9199a27b8690ae1c71dc11f825154af7234.tar.gz lwn-d7bca9199a27b8690ae1c71dc11f825154af7234.zip | |
mm: Introduce vmap_page_range() to map pages in PCI address space
ioremap_page_range() should be used for ranges within vmalloc range only.
The vmalloc ranges are allocated by get_vm_area(). PCI has "resource"
allocator that manages PCI_IOBASE, IO_SPACE_LIMIT address range, hence
introduce vmap_page_range() to be used exclusively to map pages
in PCI address space.
Fixes: 3e49a866c9dc ("mm: Enforce VM_IOREMAP flag and range in ioremap_page_range.")
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/bpf/CANiq72ka4rir+RTN2FQoT=Vvprp_Ao-CvoYEkSNqtSY+RZj+AA@mail.gmail.com
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index c3585229c12a..ccee56615f78 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -4353,8 +4353,8 @@ int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr) if (res->end > IO_SPACE_LIMIT) return -EINVAL; - return ioremap_page_range(vaddr, vaddr + resource_size(res), phys_addr, - pgprot_device(PAGE_KERNEL)); + return vmap_page_range(vaddr, vaddr + resource_size(res), phys_addr, + pgprot_device(PAGE_KERNEL)); #else /* * This architecture does not have memory mapped I/O space, |