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csky: Fixup update_mmu_cache called with user io mapping
authorGuo Ren <guoren@linux.alibaba.com>
Fri, 25 Dec 2020 06:37:08 +0000 (06:37 +0000)
committerGuo Ren <guoren@linux.alibaba.com>
Tue, 12 Jan 2021 01:52:41 +0000 (09:52 +0800)
commit3e455cf5f30f87bc871d5fe891841a2cefb29234
treed7d797cfcfd2e778d85aa4d70e6f1cbd6f87bdbatree
parent78bfa70b16e6db0144a27a10a57348ab967738b6commit | diff
csky: Fixup update_mmu_cache called with user io mapping

The function update_mmu_cache could be called by user-io mapping.
There is no space of struct page in mem_map for the pte. Just
ignore the user-io mmaping in update_mmu_cache.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
arch/csky/abiv2/cacheflush.c diff | blob | history
XArray, radix tree and IDR