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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>
This commit is contained in:
Aneesh Kumar K.V 2019-04-17 18:29:16 +05:30 committed by Michael Ellerman
parent e09093927e
commit 53ed7a5947
1 changed files with 0 additions and 12 deletions
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12
arch/powerpc/include/asm/page.h
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@ -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