summaryrefslogtreecommitdiffstats
path: root/include/asm-i386/paravirt.h
diff options
context:
space:
mode:
authorJeremy Fitzhardinge <jeremy@goop.org>2007-05-02 19:27:15 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:15 +0200
commit4cdd9c8931767e1c56a51a1078d33a8c340f4405 (patch)
treebf8b49009011bb2dffe9683dffdcbfe3b90375f9 /include/asm-i386/paravirt.h
parent1a45b7aaa5051489b46afbc48509bd91f8b4a1ba (diff)
downloadop-kernel-dev-4cdd9c8931767e1c56a51a1078d33a8c340f4405.zip
op-kernel-dev-4cdd9c8931767e1c56a51a1078d33a8c340f4405.tar.gz
[PATCH] i386: PARAVIRT: drop unused ptep_get_and_clear
In shadow mode hypervisors, ptep_get_and_clear achieves the desired purpose of keeping the shadows in sync by issuing a native_get_and_clear, followed by a call to pte_update, which indicates the PTE has been modified. Direct mode hypervisors (Xen) have no need for this anyway, and will trap the update using writable pagetables. This means no hypervisor makes use of ptep_get_and_clear; there is no reason to have it in the paravirt-ops structure. Change confusing terminology about raw vs. native functions into consistent use of native_pte_xxx for operations which do not invoke paravirt-ops. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'include/asm-i386/paravirt.h')
-rw-r--r--include/asm-i386/paravirt.h13
1 files changed, 1 insertions, 12 deletions
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index 2ba1896..e2e7f98 100644
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -188,8 +188,6 @@ struct paravirt_ops
void (*pte_update_defer)(struct mm_struct *mm,
unsigned long addr, pte_t *ptep);
- pte_t (*ptep_get_and_clear)(pte_t *ptep);
-
#ifdef CONFIG_HIGHPTE
void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
#endif
@@ -859,12 +857,8 @@ static inline void pmd_clear(pmd_t *pmdp)
PVOP_VCALL1(pmd_clear, pmdp);
}
-static inline pte_t raw_ptep_get_and_clear(pte_t *p)
-{
- unsigned long long val = PVOP_CALL1(unsigned long long, ptep_get_and_clear, p);
- return (pte_t) { val, val >> 32 };
-}
#else /* !CONFIG_X86_PAE */
+
static inline pte_t __pte(unsigned long val)
{
return (pte_t) { PVOP_CALL1(unsigned long, make_pte, val) };
@@ -900,11 +894,6 @@ static inline void set_pmd(pmd_t *pmdp, pmd_t pmdval)
{
PVOP_VCALL2(set_pmd, pmdp, pmdval.pud.pgd.pgd);
}
-
-static inline pte_t raw_ptep_get_and_clear(pte_t *p)
-{
- return (pte_t) { PVOP_CALL1(unsigned long, ptep_get_and_clear, p) };
-}
#endif /* CONFIG_X86_PAE */
#define __HAVE_ARCH_ENTER_LAZY_CPU_MODE
OpenPOWER on IntegriCloud