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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-09-25 21:31:43 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-19 09:12:46 +0300 |
| commit | 8e9bd41e4ce1001f5b89e4c9a69f870f39d56c12 (patch) | |
| tree | 4cc316f8970edf22d0d6613f0848b2c0b5fc6e8a /arch/powerpc/mm | |
| parent | d20506d4728c3b7408e84d9aececbcb78c3061ee (diff) | |
| download | linux-8e9bd41e4ce1001f5b89e4c9a69f870f39d56c12.tar.xz | |
powerpc/nohash: Replace pte_user() by pte_read()
pte_user() is now only used in pte_access_permitted() to check
access on vmas. User flag is cleared to make a page unreadable.
So rename it pte_read() and remove pte_user() which isn't used
anymore.
For the time being it checks _PAGE_USER but in the near futur
all plateforms will be converted to _PAGE_READ so lets support
both for now.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/72cbb5be595e9ef884140def73815ed0b0b37010.1695659959.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/ioremap.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c index 7823c38f09de..7b0afcabd89f 100644 --- a/arch/powerpc/mm/ioremap.c +++ b/arch/powerpc/mm/ioremap.c @@ -50,10 +50,6 @@ void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long flags) if (pte_write(pte)) pte = pte_mkdirty(pte); - /* we don't want to let _PAGE_USER leak out */ - if (WARN_ON(pte_user(pte))) - return NULL; - if (iowa_is_active()) return iowa_ioremap(addr, size, pte_pgprot(pte), caller); return __ioremap_caller(addr, size, pte_pgprot(pte), caller); |