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kdb: use kmap_local_page()

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Use kmap_local_page() instead of kmap_atomic() which has been deprecated.

Signed-off-by: Zhang Heng <zhangheng@kylinos.cn>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20241223085420.1815930-1-zhangheng@kylinos.cn
Signed-off-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
This commit is contained in:
Zhang Heng 2024-12-23 16:54:20 +08:00 • committed by Daniel Thompson (RISCstar)
parent 9d89551994
commit 36975ec3a2
1 changed files with 3 additions and 3 deletions
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6
kernel/debug/kdb/kdb_support.c
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@ -305,7 +305,7 @@ int kdb_putarea_size(unsigned long addr, void *res, size_t size)
/*
* kdb_getphys - Read data from a physical address. Validate the
* address is in range, use kmap_atomic() to get data
* address is in range, use kmap_local_page() to get data
* similar to kdb_getarea() - but for phys addresses
* Inputs:
* res Pointer to the word to receive the result
@ -324,9 +324,9 @@ static int kdb_getphys(void *res, unsigned long addr, size_t size)
if (!pfn_valid(pfn))
return 1;
page = pfn_to_page(pfn);
vaddr = kmap_atomic(page);
vaddr = kmap_local_page(page);
memcpy(res, vaddr + (addr & (PAGE_SIZE - 1)), size);
kunmap_atomic(vaddr);
kunmap_local(vaddr);
return 0;
}