xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

KVM: PPC: Remove page table walk helpers

Browse Source 
This patch remove helpers which we had used only once in the code.
Limiting page table walk variants help in ensuring that we won't
end up with code walking page table with wrong assumptions.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V
2015-03-30 10:39:13 +05:30
committed by Michael Ellerman
parent 5e1d44aef1
commit dac5657067
3 changed files with 28 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
arch/powerpc/include/asm/pgtable.h
View File

@@ -249,27 +249,6 @@ extern int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr,
#endif
pte_t *find_linux_pte_or_hugepte(pgd_t *pgdir, unsigned long ea,
unsigned *shift);
static inline pte_t *lookup_linux_ptep(pgd_t *pgdir, unsigned long hva,
unsigned long *pte_sizep)
{
pte_t *ptep;
unsigned long ps = *pte_sizep;
unsigned int shift;
ptep = find_linux_pte_or_hugepte(pgdir, hva, &shift);
if (!ptep)
return NULL;
if (shift)
*pte_sizep = 1ul << shift;
else
*pte_sizep = PAGE_SIZE;
if (ps > *pte_sizep)
return NULL;
return ptep;
}
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */