LoongArch: mm: Add page table mapped mode support for virt_to_page()

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According to LoongArch documentations, there are two types of address
translation modes: direct mapped address translation mode (DMW mode) and
page table mapped address translation mode (TLB mode).

Currently, virt_to_page() only supports direct mapped mode. This patch
determines which mode is used, and adds corresponding handling functions
for both modes.

For more details on the two modes, see [1].

[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#virtual-address-space-and-address-translation-mode

Signed-off-by: Enze Li <lienze@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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This commit is contained in:

Enze Li 2023-09-06 22:53:55 +08:00 • committed by Huacai Chen

parent ec9fee79d4

commit 8b5cb1cbf3

3 changed files with 21 additions and 1 deletions

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7

arch/loongarch/include/asm/page.h

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3

arch/loongarch/include/asm/pgtable.h

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12

arch/loongarch/mm/pgtable.c

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