Displaying 20 results from an estimated 24 matches for "cpu_16bit_stack_size".
2007 Apr 18
0
[PATCH 10/21] i386 Use protected segment for 16bit stack
...oid)
set_base(gdt[GDT_ENTRY_BAD_BIOS_CACHE], __va(BAD_BIOS_AREA));
/* Set up GDT entry for 16bit stack */
- *(__u64 *)(&gdt[GDT_ENTRY_ESPFIX_SS]) |=
- ((((__u64)stk16_off) << 16) & 0x000000ffffff0000ULL) |
- ((((__u64)stk16_off) << 32) & 0xff00000000000000ULL) |
- (CPU_16BIT_STACK_SIZE - 1);
+ prepare_protected_segment(cpu, GDT_ENTRY_ESPFIX_SS, (void *) stk16_off,
+ CPU_16BIT_STACK_SIZE);
cpu_gdt_descr[cpu].size = GDT_SIZE - 1;
cpu_gdt_descr[cpu].address = (unsigned long)gdt;
2007 Apr 18
0
[PATCH 10/21] i386 Use protected segment for 16bit stack
...oid)
set_base(gdt[GDT_ENTRY_BAD_BIOS_CACHE], __va(BAD_BIOS_AREA));
/* Set up GDT entry for 16bit stack */
- *(__u64 *)(&gdt[GDT_ENTRY_ESPFIX_SS]) |=
- ((((__u64)stk16_off) << 16) & 0x000000ffffff0000ULL) |
- ((((__u64)stk16_off) << 32) & 0xff00000000000000ULL) |
- (CPU_16BIT_STACK_SIZE - 1);
+ prepare_protected_segment(cpu, GDT_ENTRY_ESPFIX_SS, (void *) stk16_off,
+ CPU_16BIT_STACK_SIZE);
cpu_gdt_descr[cpu].size = GDT_SIZE - 1;
cpu_gdt_descr[cpu].address = (unsigned long)gdt;
2007 Apr 18
2
[PATCH 8/14] i386 / Add a per cpu gdt accessor
...6/desc.h 2005-08-10 20:41:03.000000000 -0700
@@ -39,6 +39,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table, _cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
Index: linux-2.6.13/include/asm-i386/mach-default/mach_desc.h
===================================================================
--- linux-2.6.13.orig/include/asm-i386/mach-default/mach_desc.h 2005-08-09 20:17:21.000000000 -0700
+++ linux-2.6.13/include/asm-i386/mach...
2007 Apr 18
2
[PATCH 8/14] i386 / Add a per cpu gdt accessor
...6/desc.h 2005-08-10 20:41:03.000000000 -0700
@@ -39,6 +39,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table, _cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
Index: linux-2.6.13/include/asm-i386/mach-default/mach_desc.h
===================================================================
--- linux-2.6.13.orig/include/asm-i386/mach-default/mach_desc.h 2005-08-09 20:17:21.000000000 -0700
+++ linux-2.6.13/include/asm-i386/mach...
2007 Apr 18
0
[PATCH 13/21] i386 Gdt page isolation
...000000000 -0800
@@ -15,9 +15,6 @@
#include <asm/mmu.h>
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
-
-#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
@@ -29,6 +26,11 @@ struct Xgt_desc_struct {
extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS];
+static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
+{
+ return ((struct desc_struct *)cpu_gdt_descr[cpu].address);
+}
+
#define load_TR_desc() __asm__ __vola...
2007 Apr 18
0
[PATCH 13/21] i386 Gdt page isolation
...000000000 -0800
@@ -15,9 +15,6 @@
#include <asm/mmu.h>
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
-
-#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
@@ -29,6 +26,11 @@ struct Xgt_desc_struct {
extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS];
+static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
+{
+ return ((struct desc_struct *)cpu_gdt_descr[cpu].address);
+}
+
#define load_TR_desc() __asm__ __vola...
2007 Apr 18
0
[PATCH 7/12] gdt-accessor
...6/desc.h 2005-08-08 17:16:07.000000000 -0700
@@ -21,6 +21,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table, _cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
@@ -68,7 +70,7 @@
static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr)
{
- _set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[entry], (int)addr,
+ _set_tssldt_desc(&get_cpu_gdt_table(cpu)[entry], (int)addr,
offsetof(struct ts...
2007 Apr 18
0
[PATCH 7/12] gdt-accessor
...6/desc.h 2005-08-08 17:16:07.000000000 -0700
@@ -21,6 +21,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table, _cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
@@ -68,7 +70,7 @@
static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr)
{
- _set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[entry], (int)addr,
+ _set_tssldt_desc(&get_cpu_gdt_table(cpu)[entry], (int)addr,
offsetof(struct ts...
2007 Apr 18
1
[PATCH 2/3] Gdt_accessor
...86/desc.h 2005-09-20 18:49:07.000000000 -0700
@@ -17,6 +17,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
@@ -60,7 +62,7 @@ __asm__ __volatile__ ("movw %w3,0(%2)\n\
static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr)
{
- _set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[entry], (int)addr,
+ _set_tssldt_desc(&get_cpu_gdt_table(c...
2007 Apr 18
1
[PATCH 2/3] Gdt_accessor
...86/desc.h 2005-09-20 18:49:07.000000000 -0700
@@ -17,6 +17,8 @@
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
+#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
+
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
struct Xgt_desc_struct {
@@ -60,7 +62,7 @@ __asm__ __volatile__ ("movw %w3,0(%2)\n\
static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr)
{
- _set_tssldt_desc(&per_cpu(cpu_gdt_table, cpu)[entry], (int)addr,
+ _set_tssldt_desc(&get_cpu_gdt_table(c...
2007 Apr 18
2
[PATCH 3/3] Gdt page isolation
...000000000 -0700
@@ -15,9 +15,6 @@
#include <asm/mmu.h>
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
-
-#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
@@ -29,6 +26,8 @@ struct Xgt_desc_struct {
extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS];
+#define get_cpu_gdt_table(_cpu) ((struct desc_struct *)cpu_gdt_descr[(_cpu)].address)
+
#define load_TR_desc() __asm__ __volatile__("ltr %w0"::"q" (GDT_ENTRY_T...
2007 Apr 18
2
[PATCH 3/3] Gdt page isolation
...000000000 -0700
@@ -15,9 +15,6 @@
#include <asm/mmu.h>
extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-DECLARE_PER_CPU(struct desc_struct, cpu_gdt_table[GDT_ENTRIES]);
-
-#define get_cpu_gdt_table(_cpu) (per_cpu(cpu_gdt_table,_cpu))
DECLARE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
@@ -29,6 +26,8 @@ struct Xgt_desc_struct {
extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS];
+#define get_cpu_gdt_table(_cpu) ((struct desc_struct *)cpu_gdt_descr[(_cpu)].address)
+
#define load_TR_desc() __asm__ __volatile__("ltr %w0"::"q" (GDT_ENTRY_T...
2007 Apr 18
1
[PATCH 0/7] Using %gs for per-cpu areas on x86
OK, here it is. Benchmarks still coming. This is against Andi's
2.6.18-rc7-git3 tree, and replaces the patches between (and not
including) i386-pda-asm-offsets and i386-early-fault.
One patch is identical, one is mildly modified, the rest are
re-implemented but inspired by Jeremy's PDA work.
Thanks,
Rusty.
--
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2007 Apr 18
1
[PATCH 0/7] Using %gs for per-cpu areas on x86
OK, here it is. Benchmarks still coming. This is against Andi's
2.6.18-rc7-git3 tree, and replaces the patches between (and not
including) i386-pda-asm-offsets and i386-early-fault.
One patch is identical, one is mildly modified, the rest are
re-implemented but inspired by Jeremy's PDA work.
Thanks,
Rusty.
--
Help! Save Australia from the worst of the DMCA: http://linux.org.au/law
2007 Apr 18
3
Per-cpu patches on top of PDA stuff...
Hi Jeremy, all,
Sorry this took so long, spent last week in Japan at OSDL conf then
netconf. After several false starts, I ended up with a very simple
implementation, which clashes significantly with your work since then
8(. I've pushed the patches anyway, but it's going to be significant
work for me to re-merge them, so I wanted your feedback first.
The first patch simply changes
2007 Apr 18
3
Per-cpu patches on top of PDA stuff...
Hi Jeremy, all,
Sorry this took so long, spent last week in Japan at OSDL conf then
netconf. After several false starts, I ended up with a very simple
implementation, which clashes significantly with your work since then
8(. I've pushed the patches anyway, but it's going to be significant
work for me to re-merge them, so I wanted your feedback first.
The first patch simply changes
2012 Jun 29
0
[PATCH] linux-2.6.18/x86: improve CR0 read/write handling
...l halfway frequently executed code paths.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/arch/i386/kernel/cpu/common-xen.c
+++ b/arch/i386/kernel/cpu/common-xen.c
@@ -32,6 +32,9 @@ EXPORT_PER_CPU_SYMBOL(cpu_gdt_descr);
#ifndef CONFIG_XEN
DEFINE_PER_CPU(unsigned char, cpu_16bit_stack[CPU_16BIT_STACK_SIZE]);
EXPORT_PER_CPU_SYMBOL(cpu_16bit_stack);
+#else
+DEFINE_PER_CPU(unsigned int, xen_x86_cr0);
+EXPORT_PER_CPU_SYMBOL(xen_x86_cr0);
#endif
static int cachesize_override __cpuinitdata = -1;
@@ -681,6 +684,7 @@ old_gdt:
cpu_gdt_descr->size = GDT_SIZE - 1;
cpu_gdt_descr->address = (unsi...
2007 Apr 18
0
[RFC, PATCH 11/24] i386 Vmi segment changes
...e16_off), ®s->eip, 20);
/* fill in the switch pointers */
switch16_ptr[0] = (regs->esp & 0xffff0000) | iret_frame16_off;
- switch16_ptr[1] = __ESPFIX_SS;
+ switch16_ptr[1] = __ESPFIX_SS | get_kernel_rpl();
switch32_ptr[0] = (unsigned long)stk + sizeof(struct pt_regs) +
8 - CPU_16BIT_STACK_SIZE;
- switch32_ptr[1] = __KERNEL_DS;
+ switch32_ptr[1] = __KERNEL_DS | get_kernel_rpl();
}
fastcall unsigned char * fixup_x86_bogus_stack(unsigned short sp)
2007 Apr 18
0
[RFC, PATCH 11/24] i386 Vmi segment changes
...e16_off), ®s->eip, 20);
/* fill in the switch pointers */
switch16_ptr[0] = (regs->esp & 0xffff0000) | iret_frame16_off;
- switch16_ptr[1] = __ESPFIX_SS;
+ switch16_ptr[1] = __ESPFIX_SS | get_kernel_rpl();
switch32_ptr[0] = (unsigned long)stk + sizeof(struct pt_regs) +
8 - CPU_16BIT_STACK_SIZE;
- switch32_ptr[1] = __KERNEL_DS;
+ switch32_ptr[1] = __KERNEL_DS | get_kernel_rpl();
}
fastcall unsigned char * fixup_x86_bogus_stack(unsigned short sp)
2007 Apr 18
2
[PATCH 3/6] i386 virtualization - Make ldt a desc struct
...asm-i386/desc.h
> ===================================================================
> --- 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)...