The patch titled
i386: pte simplify ops
has been removed from the -mm tree. Its filename was
i386-pte-simplify-ops.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: i386: pte simplify ops
From: Zachary Amsden <zach@xxxxxxxxxx>
Add comment and condense code to make use of native_local_ptep_get_and_clear
function. Also, it turns out the 2-level and 3-level paging definitions were
identical, so move the common definition into pgtable.h
Signed-off-by: Zachary Amsden <zach@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-i386/pgtable-2level.h | 10 ----------
include/asm-i386/pgtable-3level.h | 10 ----------
include/asm-i386/pgtable.h | 17 +++++++++++++++--
3 files changed, 15 insertions(+), 22 deletions(-)
diff -puN include/asm-i386/pgtable-2level.h~i386-pte-simplify-ops include/asm-i386/pgtable-2level.h
--- a/include/asm-i386/pgtable-2level.h~i386-pte-simplify-ops
+++ a/include/asm-i386/pgtable-2level.h
@@ -41,16 +41,6 @@ static inline void native_pte_clear(stru
*xp = __pte(0);
}
-/* local pte updates need not use xchg for locking */
-static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
-{
- pte_t res;
-
- res = *ptep;
- native_pte_clear(NULL, 0, ptep);
- return res;
-}
-
#ifdef CONFIG_SMP
static inline pte_t native_ptep_get_and_clear(pte_t *xp)
{
diff -puN include/asm-i386/pgtable-3level.h~i386-pte-simplify-ops include/asm-i386/pgtable-3level.h
--- a/include/asm-i386/pgtable-3level.h~i386-pte-simplify-ops
+++ a/include/asm-i386/pgtable-3level.h
@@ -139,16 +139,6 @@ static inline void pud_clear (pud_t * pu
#define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \
pmd_index(address))
-/* local pte updates need not use xchg for locking */
-static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
-{
- pte_t res;
-
- res = *ptep;
- native_pte_clear(NULL, 0, ptep);
- return res;
-}
-
#ifdef CONFIG_SMP
static inline pte_t native_ptep_get_and_clear(pte_t *ptep)
{
diff -puN include/asm-i386/pgtable.h~i386-pte-simplify-ops include/asm-i386/pgtable.h
--- a/include/asm-i386/pgtable.h~i386-pte-simplify-ops
+++ a/include/asm-i386/pgtable.h
@@ -269,6 +269,16 @@ extern void vmalloc_sync_all(void);
#define pte_update_defer(mm, addr, ptep) do { } while (0)
#endif
+/* local pte updates need not use xchg for locking */
+static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep)
+{
+ pte_t res = *ptep;
+
+ /* Pure native function needs no input for mm, addr */
+ native_pte_clear(NULL, 0, ptep);
+ return res;
+}
+
/*
* We only update the dirty/accessed state if we set
* the dirty bit by hand in the kernel, since the hardware
@@ -343,8 +353,11 @@ static inline pte_t ptep_get_and_clear_f
{
pte_t pte;
if (full) {
- pte = *ptep;
- native_pte_clear(mm, addr, ptep);
+ /*
+ * Full address destruction in progress; paravirt does not
+ * care about updates and native needs no locking
+ */
+ pte = native_local_ptep_get_and_clear(ptep);
} else {
pte = ptep_get_and_clear(mm, addr, ptep);
}
_
Patches currently in -mm which might be from zach@xxxxxxxxxx are
git-acpi.patch
fix-buslogic-to-stop-using-check_region.patch
i386-map-enough-initial-memory-to-create-lowmem-mappings-fix.patch
i386-use-pte_update_defer-in-ptep_test_and_clear_dirtyyoung.patch
ignore-stolen-time-in-the-softlockup-watchdog.patch
ignore-stolen-time-in-the-softlockup-watchdog-fix.patch
-
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