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OpenCloudOS-Kernel
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86 

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: pit_clockevent can be static
  x86: EFI runtime code mapping enhancement
  x86: EFI: fix use of unitialized variable and the cache logic
  x86: CPA: fix gbpages support in try_preserve_large_page
  xen: unpin initial Xen pagetable once we're finished with it
  x86/early_ioremap: don't assume we're using swapper_pg_dir
  x86: fixup machine_ops reboot_{32|64}.c unification fallout
  x86: fix sigcontext.h user export
This commit is contained in:
Linus Torvalds 2008-02-13 08:20:31 -08:00
parent 282ea441e0 c2a9cc7e86
commit d7ab95f8c5
8 changed files with 129 additions and 39 deletions
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12
arch/x86/kernel/efi.c
View File

@ -384,9 +384,6 @@ static void __init runtime_code_page_mkexec(void)
efi_memory_desc_t *md;
void *p;
if (!(__supported_pte_mask & _PAGE_NX))
return;
/* Make EFI runtime service code area executable */
for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
md = p;
@ -428,9 +425,6 @@ void __init efi_enter_virtual_mode(void)
else
va = efi_ioremap(md->phys_addr, size);
if (md->attribute & EFI_MEMORY_WB)
set_memory_uc(md->virt_addr, size);
md->virt_addr = (u64) (unsigned long) va;
if (!va) {
@ -439,6 +433,9 @@ void __init efi_enter_virtual_mode(void)
continue;
}
if (!(md->attribute & EFI_MEMORY_WB))
set_memory_uc(md->virt_addr, size);
systab = (u64) (unsigned long) efi_phys.systab;
if (md->phys_addr <= systab && systab < end) {
systab += md->virt_addr - md->phys_addr;
@ -476,7 +473,8 @@ void __init efi_enter_virtual_mode(void)
efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count;
efi.reset_system = virt_efi_reset_system;
efi.set_virtual_address_map = virt_efi_set_virtual_address_map;
runtime_code_page_mkexec();
if (__supported_pte_mask & _PAGE_NX)
runtime_code_page_mkexec();
early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);
memmap.map = NULL;
}

30
arch/x86/kernel/efi_64.c
View File

@ -35,6 +35,7 @@
#include <asm/tlbflush.h>
#include <asm/proto.h>
#include <asm/efi.h>
#include <asm/cacheflush.h>
static pgd_t save_pgd __initdata;
static unsigned long efi_flags __initdata;
@ -43,22 +44,15 @@ static void __init early_mapping_set_exec(unsigned long start,
unsigned long end,
int executable)
{
pte_t *kpte;
unsigned int level;
unsigned long num_pages;
while (start < end) {
kpte = lookup_address((unsigned long)__va(start), &level);
BUG_ON(!kpte);
if (executable)
set_pte(kpte, pte_mkexec(*kpte));
else
set_pte(kpte, __pte((pte_val(*kpte) | _PAGE_NX) & \
__supported_pte_mask));
if (level == PG_LEVEL_4K)
start = (start + PAGE_SIZE) & PAGE_MASK;
else
start = (start + PMD_SIZE) & PMD_MASK;
}
start &= PMD_MASK;
end = (end + PMD_SIZE - 1) & PMD_MASK;
num_pages = (end - start) >> PAGE_SHIFT;
if (executable)
set_memory_x((unsigned long)__va(start), num_pages);
else
set_memory_nx((unsigned long)__va(start), num_pages);
}
static void __init early_runtime_code_mapping_set_exec(int executable)
@ -74,7 +68,7 @@ static void __init early_runtime_code_mapping_set_exec(int executable)
md = p;
if (md->type == EFI_RUNTIME_SERVICES_CODE) {
unsigned long end;
end = md->phys_addr + (md->num_pages << PAGE_SHIFT);
end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT);
early_mapping_set_exec(md->phys_addr, end, executable);
}
}
@ -84,8 +78,8 @@ void __init efi_call_phys_prelog(void)
{
unsigned long vaddress;
local_irq_save(efi_flags);
early_runtime_code_mapping_set_exec(1);
local_irq_save(efi_flags);
vaddress = (unsigned long)__va(0x0UL);
save_pgd = *pgd_offset_k(0x0UL);
set_pgd(pgd_offset_k(0x0UL), *pgd_offset_k(vaddress));
@ -98,9 +92,9 @@ void __init efi_call_phys_epilog(void)
* After the lock is released, the original page table is restored.
*/
set_pgd(pgd_offset_k(0x0UL), save_pgd);
early_runtime_code_mapping_set_exec(0);
__flush_tlb_all();
local_irq_restore(efi_flags);
early_runtime_code_mapping_set_exec(0);
}
void __init efi_reserve_bootmem(void)

2
arch/x86/kernel/i8253.c
View File

@ -95,7 +95,7 @@ static int pit_next_event(unsigned long delta, struct clock_event_device *evt)
* registered. This mechanism replaces the previous #ifdef LOCAL_APIC -
* !using_apic_timer decisions in do_timer_interrupt_hook()
*/
struct clock_event_device pit_clockevent = {
static struct clock_event_device pit_clockevent = {
.name = "pit",
.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
.set_mode = init_pit_timer,

46
arch/x86/kernel/reboot.c
View File

@ -326,7 +326,7 @@ static inline void kb_wait(void)
}
}
void machine_emergency_restart(void)
static void native_machine_emergency_restart(void)
{
int i;
@ -376,7 +376,7 @@ void machine_emergency_restart(void)
}
}
void machine_shutdown(void)
static void native_machine_shutdown(void)
{
/* Stop the cpus and apics */
#ifdef CONFIG_SMP
@ -420,7 +420,7 @@ void machine_shutdown(void)
#endif
}
void machine_restart(char *__unused)
static void native_machine_restart(char *__unused)
{
printk("machine restart\n");
@ -429,11 +429,11 @@ void machine_restart(char *__unused)
machine_emergency_restart();
}
void machine_halt(void)
static void native_machine_halt(void)
{
}
void machine_power_off(void)
static void native_machine_power_off(void)
{
if (pm_power_off) {
if (!reboot_force)
@ -443,9 +443,35 @@ void machine_power_off(void)
}
struct machine_ops machine_ops = {
.power_off = machine_power_off,
.shutdown = machine_shutdown,
.emergency_restart = machine_emergency_restart,
.restart = machine_restart,
.halt = machine_halt
.power_off = native_machine_power_off,
.shutdown = native_machine_shutdown,
.emergency_restart = native_machine_emergency_restart,
.restart = native_machine_restart,
.halt = native_machine_halt
};
void machine_power_off(void)
{
machine_ops.power_off();
}
void machine_shutdown(void)
{
machine_ops.shutdown();
}
void machine_emergency_restart(void)
{
machine_ops.emergency_restart();
}
void machine_restart(char *cmd)
{
machine_ops.restart(cmd);
}
void machine_halt(void)
{
machine_ops.halt();
}

4
arch/x86/mm/ioremap.c
View File

@ -265,7 +265,9 @@ static __initdata pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)]
static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
{
pgd_t *pgd = &swapper_pg_dir[pgd_index(addr)];
/* Don't assume we're using swapper_pg_dir at this point */
pgd_t *base = __va(read_cr3());
pgd_t *pgd = &base[pgd_index(addr)];
pud_t *pud = pud_offset(pgd, addr);
pmd_t *pmd = pmd_offset(pud, addr);

4
arch/x86/mm/pageattr.c
View File

@ -275,8 +275,8 @@ try_preserve_large_page(pte_t *kpte, unsigned long address,
break;
#ifdef CONFIG_X86_64
case PG_LEVEL_1G:
psize = PMD_PAGE_SIZE;
pmask = PMD_PAGE_MASK;
psize = PUD_PAGE_SIZE;
pmask = PUD_PAGE_MASK;
break;
#endif
default:

4
arch/x86/xen/enlighten.c
View File

@ -798,6 +798,10 @@ static __init void xen_pagetable_setup_start(pgd_t *base)
* added to the table can be prepared properly for Xen.
*/
xen_write_cr3(__pa(base));
/* Unpin initial Xen pagetable */
pin_pagetable_pfn(MMUEXT_UNPIN_TABLE,
PFN_DOWN(__pa(xen_start_info->pt_base)));
}
static __init void xen_pagetable_setup_done(pgd_t *base)

66
include/asm-x86/sigcontext.h
View File

@ -58,6 +58,7 @@ struct _fpstate {
#define X86_FXSR_MAGIC 0x0000
#ifdef __KERNEL__
struct sigcontext {
unsigned short gs, __gsh;
unsigned short fs, __fsh;
@ -82,6 +83,35 @@ struct sigcontext {
unsigned long oldmask;
unsigned long cr2;
};
#else /* __KERNEL__ */
/*
* User-space might still rely on the old definition:
*/
struct sigcontext {
unsigned short gs, __gsh;
unsigned short fs, __fsh;
unsigned short es, __esh;
unsigned short ds, __dsh;
unsigned long edi;
unsigned long esi;
unsigned long ebp;
unsigned long esp;
unsigned long ebx;
unsigned long edx;
unsigned long ecx;
unsigned long eax;
unsigned long trapno;
unsigned long err;
unsigned long eip;
unsigned short cs, __csh;
unsigned long eflags;
unsigned long esp_at_signal;
unsigned short ss, __ssh;
struct _fpstate __user * fpstate;
unsigned long oldmask;
unsigned long cr2;
};
#endif /* !__KERNEL__ */
#else /* __i386__ */
@ -102,6 +132,7 @@ struct _fpstate {
__u32 reserved2[24];
};
#ifdef __KERNEL__
struct sigcontext {
unsigned long r8;
unsigned long r9;
@ -132,6 +163,41 @@ struct sigcontext {
struct _fpstate __user *fpstate; /* zero when no FPU context */
unsigned long reserved1[8];
};
#else /* __KERNEL__ */
/*
* User-space might still rely on the old definition:
*/
struct sigcontext {
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r12;
unsigned long r13;
unsigned long r14;
unsigned long r15;
unsigned long rdi;
unsigned long rsi;
unsigned long rbp;
unsigned long rbx;
unsigned long rdx;
unsigned long rax;
unsigned long rcx;
unsigned long rsp;
unsigned long rip;
unsigned long eflags; /* RFLAGS */
unsigned short cs;
unsigned short gs;
unsigned short fs;
unsigned short __pad0;
unsigned long err;
unsigned long trapno;
unsigned long oldmask;
unsigned long cr2;
struct _fpstate __user *fpstate; /* zero when no FPU context */
unsigned long reserved1[8];
};
#endif /* !__KERNEL__ */
#endif /* !__i386__ */