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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-04-17 18:29:16 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-04-21 23:12:40 +1000 |
| commit | 53ed7a5947de2e19c270a0bc0c29257c6d004b0f (patch) | |
| tree | c2620795b311304a368e193cde8fefe3bd609339 /arch/powerpc/include/asm/page.h | |
| parent | powerpc/mm: Validate address values against different region limits (diff) | |
| download | linux-dev-53ed7a5947de2e19c270a0bc0c29257c6d004b0f.tar.xz linux-dev-53ed7a5947de2e19c270a0bc0c29257c6d004b0f.zip | |
powerpc/mm: Drop the unnecessary region check
All the regions are now mapped with top nibble 0xc. Hence the region id
check is not needed for virt_addr_valid()
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/page.h')
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 918228f2205b..748f5db2e2b7 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -132,19 +132,7 @@ static inline bool pfn_valid(unsigned long pfn) #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#ifdef CONFIG_PPC_BOOK3S_64 -/* - * On hash the vmalloc and other regions alias to the kernel region when passed - * through __pa(), which virt_to_pfn() uses. That means virt_addr_valid() can - * return true for some vmalloc addresses, which is incorrect. So explicitly - * check that the address is in the kernel region. - */ -/* may be can drop get_region_id */ -#define virt_addr_valid(kaddr) (get_region_id((unsigned long)kaddr) == KERNEL_REGION_ID && \ - pfn_valid(virt_to_pfn(kaddr))) -#else #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr)) -#endif /* * On Book-E parts we need __va to parse the device tree and we can't |