Searched hist:"18 e780b4e6ab89a3a10f46d151971863562c1c91" (Results 1 – 2 of 2) sorted by relevance
| /linux/mm/ |
| H A D | ioremap.c | diff 18e780b4e6ab89a3a10f46d151971863562c1c91 Tue Jun 07 14:50:25 CEST 2022 Kefeng Wang <wangkefeng.wang@huawei.com> mm: ioremap: Add ioremap/iounmap_allowed()
Add special hook for architecture to verify addr, size or prot
when ioremap() or iounmap(), which will make the generic ioremap
more useful.
ioremap_allowed() return a bool,
- true means continue to remap
- false means skip remap and return directly
iounmap_allowed() return a bool,
- true means continue to vunmap
- false code means skip vunmap and return directly
Meanwhile, only vunmap the address when it is in vmalloc area
as the generic ioremap only returns vmalloc addresses.
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Baoquan He <bhe@redhat.com>
Link: https://lore.kernel.org/r/20220607125027.44946-5-wangkefeng.wang@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
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| /linux/include/asm-generic/ |
| H A D | io.h | diff 18e780b4e6ab89a3a10f46d151971863562c1c91 Tue Jun 07 14:50:25 CEST 2022 Kefeng Wang <wangkefeng.wang@huawei.com> mm: ioremap: Add ioremap/iounmap_allowed()
Add special hook for architecture to verify addr, size or prot
when ioremap() or iounmap(), which will make the generic ioremap
more useful.
ioremap_allowed() return a bool,
- true means continue to remap
- false means skip remap and return directly
iounmap_allowed() return a bool,
- true means continue to vunmap
- false code means skip vunmap and return directly
Meanwhile, only vunmap the address when it is in vmalloc area
as the generic ioremap only returns vmalloc addresses.
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Baoquan He <bhe@redhat.com>
Link: https://lore.kernel.org/r/20220607125027.44946-5-wangkefeng.wang@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
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