Displaying 6 results from an estimated 6 matches for "ldt_entries_per_page".
2007 Apr 18
2
[PATCH 3/6] i386 virtualization - Make ldt a desc struct
...--- linux-2.6.13.orig/include/asm-i386/desc.h 2005-08-15 11:16:59.000000000 -0700
> +++ linux-2.6.13/include/asm-i386/desc.h 2005-08-15 11:19:49.000000000 -0700
> @@ -6,6 +6,9 @@
>
> #define CPU_16BIT_STACK_SIZE 1024
>
> +/* The number of LDT entries per page */
> +#define LDT_ENTRIES_PER_PAGE (PAGE_SIZE / LDT_ENTRY_SIZE)
> +
> #ifndef __ASSEMBLY__
>
> #include <linux/preempt.h>
> @@ -30,7 +33,7 @@
> static inline unsigned long get_desc_base(struct desc_struct *desc)
> {
> unsigned long base;
> - base = ((desc->a >> 16) & 0x0000ffff)...
2007 Apr 18
2
[PATCH 3/6] i386 virtualization - Make ldt a desc struct
...--- linux-2.6.13.orig/include/asm-i386/desc.h 2005-08-15 11:16:59.000000000 -0700
> +++ linux-2.6.13/include/asm-i386/desc.h 2005-08-15 11:19:49.000000000 -0700
> @@ -6,6 +6,9 @@
>
> #define CPU_16BIT_STACK_SIZE 1024
>
> +/* The number of LDT entries per page */
> +#define LDT_ENTRIES_PER_PAGE (PAGE_SIZE / LDT_ENTRY_SIZE)
> +
> #ifndef __ASSEMBLY__
>
> #include <linux/preempt.h>
> @@ -30,7 +33,7 @@
> static inline unsigned long get_desc_base(struct desc_struct *desc)
> {
> unsigned long base;
> - base = ((desc->a >> 16) & 0x0000ffff)...
2007 Apr 18
0
[PATCH 20/21] i386 Ldt cleanups 3
...return -ENOMEM;
- if (oldsize)
- memcpy(newldt, pc->ldt, oldsize*LDT_ENTRY_SIZE);
+ if (old_pages)
+ memcpy(newldt, pc->ldt, old_pages*PAGE_SIZE);
oldldt = pc->ldt;
- memset(newldt+oldsize*LDT_ENTRY_SIZE, 0, (mincount-oldsize)*LDT_ENTRY_SIZE);
+ if (reload)
+ memset(newldt+old_pages*LDT_ENTRIES_PER_PAGE, 0, (new_pages-old_pages)*PAGE_SIZE);
pc->ldt = newldt;
wmb();
- pc->size = mincount;
+ pc->ldt_pages = new_pages;
wmb();
+ /*
+ * If updating an active LDT, must reload LDT on all processors
+ * where it could be active.
+ */
if (reload) {
#ifdef CONFIG_SMP
cpumask_t mask...
2007 Apr 18
0
[PATCH 20/21] i386 Ldt cleanups 3
...return -ENOMEM;
- if (oldsize)
- memcpy(newldt, pc->ldt, oldsize*LDT_ENTRY_SIZE);
+ if (old_pages)
+ memcpy(newldt, pc->ldt, old_pages*PAGE_SIZE);
oldldt = pc->ldt;
- memset(newldt+oldsize*LDT_ENTRY_SIZE, 0, (mincount-oldsize)*LDT_ENTRY_SIZE);
+ if (reload)
+ memset(newldt+old_pages*LDT_ENTRIES_PER_PAGE, 0, (new_pages-old_pages)*PAGE_SIZE);
pc->ldt = newldt;
wmb();
- pc->size = mincount;
+ pc->ldt_pages = new_pages;
wmb();
+ /*
+ * If updating an active LDT, must reload LDT on all processors
+ * where it could be active.
+ */
if (reload) {
#ifdef CONFIG_SMP
cpumask_t mask...
2007 Apr 18
0
[PATCH 17/21] i386 Ldt cleanups 1
...nclude/asm-i386/ldt.h 2005-10-27 17:02:08.000000000 -0700
+++ linux-2.6.14-zach-work/include/asm-i386/ldt.h 2005-11-04 18:22:07.000000000 -0800
@@ -10,6 +10,8 @@
#define LDT_ENTRIES 8192
/* The size of each LDT entry. */
#define LDT_ENTRY_SIZE 8
+/* The number of LDT entries per page */
+#define LDT_ENTRIES_PER_PAGE (PAGE_SIZE / LDT_ENTRY_SIZE)
#ifndef __ASSEMBLY__
struct user_desc {
2007 Apr 18
0
[PATCH 17/21] i386 Ldt cleanups 1
...nclude/asm-i386/ldt.h 2005-10-27 17:02:08.000000000 -0700
+++ linux-2.6.14-zach-work/include/asm-i386/ldt.h 2005-11-04 18:22:07.000000000 -0800
@@ -10,6 +10,8 @@
#define LDT_ENTRIES 8192
/* The size of each LDT entry. */
#define LDT_ENTRY_SIZE 8
+/* The number of LDT entries per page */
+#define LDT_ENTRIES_PER_PAGE (PAGE_SIZE / LDT_ENTRY_SIZE)
#ifndef __ASSEMBLY__
struct user_desc {