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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Get rid of more uses of batched mmu interface.
ChangeSet 1.1384.1.1, 2005/03/29 11:24:15+01:00, kaf24@xxxxxxxxxxxxxxxxxxxx
Get rid of more uses of batched mmu interface.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
linux-2.4.29-xen-sparse/arch/xen/kernel/traps.c | 1
linux-2.4.29-xen-sparse/include/asm-xen/desc.h | 11 ----
linux-2.4.29-xen-sparse/include/asm-xen/pgalloc.h | 12 +----
linux-2.4.29-xen-sparse/include/asm-xen/pgtable.h | 8 +--
linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c | 7 +-
linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c | 24
+++-------
linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h | 2
7 files changed, 22 insertions(+), 43 deletions(-)
diff -Nru a/linux-2.4.29-xen-sparse/arch/xen/kernel/traps.c
b/linux-2.4.29-xen-sparse/arch/xen/kernel/traps.c
--- a/linux-2.4.29-xen-sparse/arch/xen/kernel/traps.c 2005-03-29 06:03:45
-05:00
+++ b/linux-2.4.29-xen-sparse/arch/xen/kernel/traps.c 2005-03-29 06:03:45
-05:00
@@ -623,7 +623,6 @@
set_call_gate(&default_ldt[0],lcall7);
set_call_gate(&default_ldt[4],lcall27);
__make_page_readonly(&default_ldt[0]);
- flush_page_update_queue();
cpu_init();
}
diff -Nru a/linux-2.4.29-xen-sparse/include/asm-xen/desc.h
b/linux-2.4.29-xen-sparse/include/asm-xen/desc.h
--- a/linux-2.4.29-xen-sparse/include/asm-xen/desc.h 2005-03-29 06:03:45
-05:00
+++ b/linux-2.4.29-xen-sparse/include/asm-xen/desc.h 2005-03-29 06:03:45
-05:00
@@ -16,15 +16,6 @@
extern struct desc_struct default_ldt[];
-static inline void clear_LDT(void)
-{
- /*
- * NB. We load the default_ldt for lcall7/27 handling on demand, as
- * it slows down context switching. Noone uses it anyway.
- */
- queue_set_ldt(0, 0);
-}
-
static inline void load_LDT(mm_context_t *pc)
{
void *segments = pc->ldt;
@@ -33,7 +24,7 @@
if ( count == 0 )
segments = NULL;
- queue_set_ldt((unsigned long)segments, count);
+ xen_set_ldt((unsigned long)segments, count);
}
#endif /* __ASSEMBLY__ */
diff -Nru a/linux-2.4.29-xen-sparse/include/asm-xen/pgalloc.h
b/linux-2.4.29-xen-sparse/include/asm-xen/pgalloc.h
--- a/linux-2.4.29-xen-sparse/include/asm-xen/pgalloc.h 2005-03-29 06:03:45
-05:00
+++ b/linux-2.4.29-xen-sparse/include/asm-xen/pgalloc.h 2005-03-29 06:03:45
-05:00
@@ -79,8 +79,7 @@
init_mm.pgd + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
__make_page_readonly(pgd);
- queue_pgd_pin(__pa(pgd));
- flush_page_update_queue();
+ xen_pgd_pin(__pa(pgd));
}
return pgd;
}
@@ -110,9 +109,8 @@
free_page((unsigned long)__va(pgd_val(pgd[i])-1));
kmem_cache_free(pae_pgd_cachep, pgd);
#else
- queue_pgd_unpin(__pa(pgd));
+ xen_pgd_unpin(__pa(pgd));
__make_page_writable(pgd);
- flush_page_update_queue();
free_page((unsigned long)pgd);
#endif
}
@@ -135,8 +133,7 @@
{
clear_page(pte);
__make_page_readonly(pte);
- queue_pte_pin(__pa(pte));
- flush_page_update_queue();
+ xen_pte_pin(__pa(pte));
}
return pte;
@@ -155,9 +152,8 @@
static __inline__ void pte_free_slow(pte_t *pte)
{
- queue_pte_unpin(__pa(pte));
+ xen_pte_unpin(__pa(pte));
__make_page_writable(pte);
- flush_page_update_queue();
free_page((unsigned long)pte);
}
diff -Nru a/linux-2.4.29-xen-sparse/include/asm-xen/pgtable.h
b/linux-2.4.29-xen-sparse/include/asm-xen/pgtable.h
--- a/linux-2.4.29-xen-sparse/include/asm-xen/pgtable.h 2005-03-29 06:03:45
-05:00
+++ b/linux-2.4.29-xen-sparse/include/asm-xen/pgtable.h 2005-03-29 06:03:45
-05:00
@@ -300,7 +300,7 @@
pgd_t *pgd = pgd_offset_k((unsigned long)va);
pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
pte_t *pte = pte_offset(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)&~_PAGE_RW);
+ set_pte(pte, pte_wrprotect(*pte));
}
static inline void __make_page_writable(void *va)
@@ -308,7 +308,7 @@
pgd_t *pgd = pgd_offset_k((unsigned long)va);
pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
pte_t *pte = pte_offset(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)|_PAGE_RW);
+ set_pte(pte, pte_mkwrite(*pte));
}
static inline void make_page_readonly(void *va)
@@ -316,7 +316,7 @@
pgd_t *pgd = pgd_offset_k((unsigned long)va);
pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
pte_t *pte = pte_offset(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)&~_PAGE_RW);
+ set_pte(pte, pte_wrprotect(*pte));
if ( (unsigned long)va >= VMALLOC_START )
__make_page_readonly(machine_to_virt(
*(unsigned long *)pte&PAGE_MASK));
@@ -327,7 +327,7 @@
pgd_t *pgd = pgd_offset_k((unsigned long)va);
pmd_t *pmd = pmd_offset(pgd, (unsigned long)va);
pte_t *pte = pte_offset(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)|_PAGE_RW);
+ set_pte(pte, pte_mkwrite(*pte));
if ( (unsigned long)va >= VMALLOC_START )
__make_page_writable(machine_to_virt(
*(unsigned long *)pte&PAGE_MASK));
diff -Nru a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c
b/linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c 2005-03-29 06:03:45
-05:00
+++ b/linux-2.6.11-xen-sparse/arch/xen/i386/mm/init.c 2005-03-29 06:03:45
-05:00
@@ -355,11 +355,12 @@
*/
memcpy(new_pgd, old_pgd, PTRS_PER_PGD_NO_HV*sizeof(pgd_t));
make_page_readonly(new_pgd);
- queue_pgd_pin(__pa(new_pgd));
+ xen_pgd_pin(__pa(new_pgd));
load_cr3(new_pgd);
- queue_pgd_unpin(__pa(old_pgd));
+ flush_page_update_queue();
+ xen_pgd_unpin(__pa(old_pgd));
make_page_writable(old_pgd);
- __flush_tlb_all(); /* implicit flush */
+ __flush_tlb_all();
free_bootmem(__pa(old_pgd), PAGE_SIZE);
kernel_physical_mapping_init(new_pgd);
diff -Nru a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c
b/linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c
--- a/linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c 2005-03-29
06:03:45 -05:00
+++ b/linux-2.6.11-xen-sparse/arch/xen/i386/mm/pgtable.c 2005-03-29
06:03:45 -05:00
@@ -193,10 +193,8 @@
pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
{
pte_t *pte = (pte_t
*)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
- if (pte) {
+ if (pte)
make_page_readonly(pte);
- flush_page_update_queue();
- }
return pte;
}
@@ -208,8 +206,7 @@
clear_page(pte);
make_page_readonly(pte);
- queue_pte_pin(__pa(pte));
- flush_page_update_queue();
+ xen_pte_pin(__pa(pte));
}
void pte_dtor(void *pte, kmem_cache_t *cache, unsigned long unused)
@@ -217,9 +214,8 @@
struct page *page = virt_to_page(pte);
ClearPageForeign(page);
- queue_pte_unpin(__pa(pte));
+ xen_pte_unpin(__pa(pte));
make_page_writable(pte);
- flush_page_update_queue();
}
struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
@@ -316,8 +312,7 @@
memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
out:
make_page_readonly(pgd);
- queue_pgd_pin(__pa(pgd));
- flush_page_update_queue();
+ xen_pgd_pin(__pa(pgd));
}
/* never called when PTRS_PER_PMD > 1 */
@@ -325,9 +320,8 @@
{
unsigned long flags; /* can be called from interrupt context */
- queue_pgd_unpin(__pa(pgd));
+ xen_pgd_unpin(__pa(pgd));
make_page_writable(pgd);
- flush_page_update_queue();
if (PTRS_PER_PMD > 1)
return;
@@ -378,7 +372,7 @@
pud_t *pud = pud_offset(pgd, (unsigned long)va);
pmd_t *pmd = pmd_offset(pud, (unsigned long)va);
pte_t *pte = pte_offset_kernel(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)&~_PAGE_RW);
+ set_pte(pte, pte_wrprotect(*pte));
}
void make_lowmem_page_writable(void *va)
@@ -387,7 +381,7 @@
pud_t *pud = pud_offset(pgd, (unsigned long)va);
pmd_t *pmd = pmd_offset(pud, (unsigned long)va);
pte_t *pte = pte_offset_kernel(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)|_PAGE_RW);
+ set_pte(pte, pte_mkwrite(*pte));
}
void make_page_readonly(void *va)
@@ -396,7 +390,7 @@
pud_t *pud = pud_offset(pgd, (unsigned long)va);
pmd_t *pmd = pmd_offset(pud, (unsigned long)va);
pte_t *pte = pte_offset_kernel(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)&~_PAGE_RW);
+ set_pte(pte, pte_wrprotect(*pte));
if ( (unsigned long)va >= (unsigned long)high_memory )
{
unsigned long phys;
@@ -414,7 +408,7 @@
pud_t *pud = pud_offset(pgd, (unsigned long)va);
pmd_t *pmd = pmd_offset(pud, (unsigned long)va);
pte_t *pte = pte_offset_kernel(pmd, (unsigned long)va);
- queue_l1_entry_update(pte, (*(unsigned long *)pte)|_PAGE_RW);
+ set_pte(pte, pte_mkwrite(*pte));
if ( (unsigned long)va >= (unsigned long)high_memory )
{
unsigned long phys;
diff -Nru a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h
b/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h
--- a/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h
2005-03-29 06:03:45 -05:00
+++ b/linux-2.6.11-xen-sparse/include/asm-xen/asm-i386/pgtable-2level.h
2005-03-29 06:03:45 -05:00
@@ -16,8 +16,6 @@
#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
#define set_pte_atomic(pteptr, pteval) set_pte(pteptr,pteval)
#define set_pmd(pmdptr, pmdval) xen_l2_entry_update((pmdptr), (pmdval))
-#define set_pte_batched(pteptr, pteval) \
- queue_l1_entry_update(pteptr, (pteval).pte_low)
#define ptep_get_and_clear(xp) __pte_ma(xchg(&(xp)->pte_low, 0))
#define pte_same(a, b) ((a).pte_low == (b).pte_low)
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