Remove sparse tree.

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>

1 files changed, 0 insertions, 111 deletions

diff --git a/patches/linux-2.6.18/pmd-shared.patch b/patches/linux-2.6.18/pmd-shared.patch
deleted file mode 100644
index 638a430d13..0000000000
--- a/patches/linux-2.6.18/pmd-shared.patch
+++ /dev/null
@@ -1,111 +0,0 @@
-diff -pruN ../orig-linux-2.6.18/arch/i386/mm/pageattr.c ./arch/i386/mm/pageattr.c
---- ../orig-linux-2.6.18/arch/i386/mm/pageattr.c	2006-09-20 04:42:06.000000000 +0100
-+++ ./arch/i386/mm/pageattr.c	2007-01-12 18:11:06.000000000 +0000
-@@ -84,7 +84,7 @@ static void set_pmd_pte(pte_t *kpte, uns
- 	unsigned long flags;
- 
- 	set_pte_atomic(kpte, pte); 	/* change init_mm */
--	if (PTRS_PER_PMD > 1)
-+	if (HAVE_SHARED_KERNEL_PMD)
- 		return;
- 
- 	spin_lock_irqsave(&pgd_lock, flags);
-diff -pruN ../orig-linux-2.6.18/arch/i386/mm/pgtable.c ./arch/i386/mm/pgtable.c
---- ../orig-linux-2.6.18/arch/i386/mm/pgtable.c	2006-09-20 04:42:06.000000000 +0100
-+++ ./arch/i386/mm/pgtable.c	2007-01-12 18:11:06.000000000 +0000
-@@ -214,9 +214,10 @@ void pgd_ctor(void *pgd, kmem_cache_t *c
- 		spin_lock_irqsave(&pgd_lock, flags);
- 	}
- 
--	clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
--			swapper_pg_dir + USER_PTRS_PER_PGD,
--			KERNEL_PGD_PTRS);
-+	if (PTRS_PER_PMD == 1 || HAVE_SHARED_KERNEL_PMD)
-+		clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
-+				swapper_pg_dir + USER_PTRS_PER_PGD,
-+				KERNEL_PGD_PTRS);
- 	if (PTRS_PER_PMD > 1)
- 		return;
- 
-@@ -248,6 +249,30 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
- 			goto out_oom;
- 		set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
- 	}
-+
-+	if (!HAVE_SHARED_KERNEL_PMD) {
-+		unsigned long flags;
-+
-+		for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+			pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
-+			if (!pmd)
-+				goto out_oom;
-+			set_pgd(&pgd[USER_PTRS_PER_PGD], __pgd(1 + __pa(pmd)));
-+		}
-+
-+		spin_lock_irqsave(&pgd_lock, flags);
-+		for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+			unsigned long v = (unsigned long)i << PGDIR_SHIFT;
-+			pgd_t *kpgd = pgd_offset_k(v);
-+			pud_t *kpud = pud_offset(kpgd, v);
-+			pmd_t *kpmd = pmd_offset(kpud, v);
-+			pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+			memcpy(pmd, kpmd, PAGE_SIZE);
-+		}
-+		pgd_list_add(pgd);
-+		spin_unlock_irqrestore(&pgd_lock, flags);
-+	}
-+
- 	return pgd;
- 
- out_oom:
-@@ -262,9 +287,23 @@ void pgd_free(pgd_t *pgd)
- 	int i;
- 
- 	/* in the PAE case user pgd entries are overwritten before usage */
--	if (PTRS_PER_PMD > 1)
--		for (i = 0; i < USER_PTRS_PER_PGD; ++i)
--			kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1));
-+	if (PTRS_PER_PMD > 1) {
-+		for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
-+			pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+			kmem_cache_free(pmd_cache, pmd);
-+		}
-+		if (!HAVE_SHARED_KERNEL_PMD) {
-+			unsigned long flags;
-+			spin_lock_irqsave(&pgd_lock, flags);
-+			pgd_list_del(pgd);
-+			spin_unlock_irqrestore(&pgd_lock, flags);
-+			for (i = USER_PTRS_PER_PGD; i < PTRS_PER_PGD; i++) {
-+				pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
-+				memset(pmd, 0, PTRS_PER_PMD*sizeof(pmd_t));
-+				kmem_cache_free(pmd_cache, pmd);
-+			}
-+		}
-+	}
- 	/* in the non-PAE case, free_pgtables() clears user pgd entries */
- 	kmem_cache_free(pgd_cache, pgd);
- }
-diff -pruN ../orig-linux-2.6.18/include/asm-i386/pgtable-2level-defs.h ./include/asm-i386/pgtable-2level-defs.h
---- ../orig-linux-2.6.18/include/asm-i386/pgtable-2level-defs.h	2006-09-20 04:42:06.000000000 +0100
-+++ ./include/asm-i386/pgtable-2level-defs.h	2007-01-12 18:11:06.000000000 +0000
-@@ -1,6 +1,8 @@
- #ifndef _I386_PGTABLE_2LEVEL_DEFS_H
- #define _I386_PGTABLE_2LEVEL_DEFS_H
- 
-+#define HAVE_SHARED_KERNEL_PMD 0
-+
- /*
-  * traditional i386 two-level paging structure:
-  */
-diff -pruN ../orig-linux-2.6.18/include/asm-i386/pgtable-3level-defs.h ./include/asm-i386/pgtable-3level-defs.h
---- ../orig-linux-2.6.18/include/asm-i386/pgtable-3level-defs.h	2006-09-20 04:42:06.000000000 +0100
-+++ ./include/asm-i386/pgtable-3level-defs.h	2007-01-12 18:11:06.000000000 +0000
-@@ -1,6 +1,8 @@
- #ifndef _I386_PGTABLE_3LEVEL_DEFS_H
- #define _I386_PGTABLE_3LEVEL_DEFS_H
- 
-+#define HAVE_SHARED_KERNEL_PMD 1
-+
- /*
-  * PGDIR_SHIFT determines what a top-level page table entry can map
-  */