Commit 05e12a69 authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'x86-fixes-for-linus' of...

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs()
  x86, bts: remove bad warning
  x86: add Dell XPS710 reboot quirk
  x86, math-emu: fix init_fpu for task != current
  x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP
  x86: fix DMI on EFI
parents cd3c1cde 73bf1b62
......@@ -37,8 +37,6 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
#else /* !CONFIG_X86_32 */
#define MAX_EFI_IO_PAGES 100
extern u64 efi_call0(void *fp);
extern u64 efi_call1(void *fp, u64 arg1);
extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);
......
......@@ -16,7 +16,6 @@
#include <asm/apicdef.h>
#include <asm/page.h>
#include <asm/vsyscall.h>
#include <asm/efi.h>
/*
* Here we define all the compile-time 'special' virtual
......@@ -43,9 +42,6 @@ enum fixed_addresses {
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
FIX_EFI_IO_MAP_LAST_PAGE,
FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
+ MAX_EFI_IO_PAGES - 1,
#ifdef CONFIG_PARAVIRT
FIX_PARAVIRT_BOOTMAP,
#endif
......
......@@ -172,7 +172,13 @@ static inline void __save_init_fpu(struct task_struct *tsk)
#else /* CONFIG_X86_32 */
extern void finit(void);
#ifdef CONFIG_MATH_EMULATION
extern void finit_task(struct task_struct *tsk);
#else
static inline void finit_task(struct task_struct *tsk)
{
}
#endif
static inline void tolerant_fwait(void)
{
......
......@@ -729,7 +729,7 @@ struct pebs_tracer *ds_request_pebs(struct task_struct *task,
spin_unlock_irqrestore(&ds_lock, irq);
ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_bts);
ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_pebs);
ds_resume_pebs(tracer);
return tracer;
......@@ -1029,5 +1029,4 @@ void ds_copy_thread(struct task_struct *tsk, struct task_struct *father)
void ds_exit_thread(struct task_struct *tsk)
{
WARN_ON(tsk->thread.ds_ctx);
}
......@@ -467,7 +467,7 @@ void __init efi_enter_virtual_mode(void)
efi_memory_desc_t *md;
efi_status_t status;
unsigned long size;
u64 end, systab, addr, npages;
u64 end, systab, addr, npages, end_pfn;
void *p, *va;
efi.systab = NULL;
......@@ -479,7 +479,10 @@ void __init efi_enter_virtual_mode(void)
size = md->num_pages << EFI_PAGE_SHIFT;
end = md->phys_addr + size;
if (PFN_UP(end) <= max_low_pfn_mapped)
end_pfn = PFN_UP(end);
if (end_pfn <= max_low_pfn_mapped
|| (end_pfn > (1UL << (32 - PAGE_SHIFT))
&& end_pfn <= max_pfn_mapped))
va = __va(md->phys_addr);
else
va = efi_ioremap(md->phys_addr, size);
......
......@@ -99,24 +99,11 @@ void __init efi_call_phys_epilog(void)
void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size)
{
static unsigned pages_mapped __initdata;
unsigned i, pages;
unsigned long offset;
unsigned long last_map_pfn;
pages = PFN_UP(phys_addr + size) - PFN_DOWN(phys_addr);
offset = phys_addr & ~PAGE_MASK;
phys_addr &= PAGE_MASK;
if (pages_mapped + pages > MAX_EFI_IO_PAGES)
last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size)
return NULL;
for (i = 0; i < pages; i++) {
__set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
phys_addr, PAGE_KERNEL);
phys_addr += PAGE_SIZE;
pages_mapped++;
}
return (void __iomem *)__fix_to_virt(FIX_EFI_IO_MAP_FIRST_PAGE - \
(pages_mapped - pages)) + offset;
return (void __iomem *)__va(phys_addr);
}
......@@ -136,7 +136,7 @@ int init_fpu(struct task_struct *tsk)
#ifdef CONFIG_X86_32
if (!HAVE_HWFP) {
memset(tsk->thread.xstate, 0, xstate_size);
finit();
finit_task(tsk);
set_stopped_child_used_math(tsk);
return 0;
}
......
......@@ -217,6 +217,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"),
},
},
{ /* Handle problems with rebooting on Dell XPS710 */
.callback = set_bios_reboot,
.ident = "Dell XPS710",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Dell XPS710"),
},
},
{ }
};
......
......@@ -770,6 +770,9 @@ void __init setup_arch(char **cmdline_p)
finish_e820_parsing();
if (efi_enabled)
efi_init();
dmi_scan_machine();
dmi_check_system(bad_bios_dmi_table);
......@@ -789,8 +792,6 @@ void __init setup_arch(char **cmdline_p)
insert_resource(&iomem_resource, &data_resource);
insert_resource(&iomem_resource, &bss_resource);
if (efi_enabled)
efi_init();
#ifdef CONFIG_X86_32
if (ppro_with_ram_bug()) {
......
......@@ -30,20 +30,29 @@ static void fclex(void)
}
/* Needs to be externally visible */
void finit(void)
void finit_task(struct task_struct *tsk)
{
control_word = 0x037f;
partial_status = 0;
top = 0; /* We don't keep top in the status word internally. */
fpu_tag_word = 0xffff;
struct i387_soft_struct *soft = &tsk->thread.xstate->soft;
struct address *oaddr, *iaddr;
soft->cwd = 0x037f;
soft->swd = 0;
soft->ftop = 0; /* We don't keep top in the status word internally. */
soft->twd = 0xffff;
/* The behaviour is different from that detailed in
Section 15.1.6 of the Intel manual */
operand_address.offset = 0;
operand_address.selector = 0;
instruction_address.offset = 0;
instruction_address.selector = 0;
instruction_address.opcode = 0;
no_ip_update = 1;
oaddr = (struct address *)&soft->foo;
oaddr->offset = 0;
oaddr->selector = 0;
iaddr = (struct address *)&soft->fip;
iaddr->offset = 0;
iaddr->selector = 0;
iaddr->opcode = 0;
soft->no_update = 1;
}
void finit(void)
{
finit_task(current);
}
/*
......
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