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

x86/pvops: remove pte_flags pvop

Browse Source 
pte_flags() was introduced as a new pvop in order to extract just the
flags portion of a pte, which is a potentially cheaper operation than
extracting the page number as well.  It turns out this operation is
not needed, because simply using a mask to extract the flags from a
pte is sufficient for all current users.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jeremy Fitzhardinge
2009-01-22 14:24:16 -08:00
committed by Ingo Molnar
parent f3b8436ad9
commit ab897d2013
4 changed files with 1 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/x86/include/asm/paravirt.h
View File

@@ -279,7 +279,6 @@ struct pv_mmu_ops {
pte_t *ptep, pte_t pte);
pteval_t (*pte_val)(pte_t);
pteval_t (*pte_flags)(pte_t);
pte_t (*make_pte)(pteval_t pte);
pgdval_t (*pgd_val)(pgd_t);
@@ -1084,23 +1083,6 @@ static inline pteval_t pte_val(pte_t pte)
return ret;
}
static inline pteval_t pte_flags(pte_t pte)
{
pteval_t ret;
if (sizeof(pteval_t) > sizeof(long))
ret = PVOP_CALL2(pteval_t, pv_mmu_ops.pte_flags,
pte.pte, (u64)pte.pte >> 32);
else
ret = PVOP_CALL1(pteval_t, pv_mmu_ops.pte_flags,
pte.pte);
#ifdef CONFIG_PARAVIRT_DEBUG
BUG_ON(ret & PTE_PFN_MASK);
#endif
return ret;
}
static inline pgd_t __pgd(pgdval_t val)
{
pgdval_t ret;