Huacai Chen b7a2750ef2 LoongArch: Add ARCH_HAS_PTE_DEVMAP support ...

In order for things like get_user_pages() to work on ZONE_DEVICE memory,
we need a software PTE bit to identify device-backed PFNs.  Hook this up
along with the relevant helpers to join in with ARCH_HAS_PTE_DEVMAP.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

2024-07-20 22:40:59 +08:00

4.3 KiB

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