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

Browse source 
Pull x86 fixes from Ingo Molnar.

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/nmi: Fix section mismatch warnings on 32-bit
  x86/uv: Fix UV2 BAU legacy mode
  x86/mm: Only add extra pages count for the first memory range during pre-allocation early page table space
  x86, efi stub: Add .reloc section back into image
  x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs
  x86/reboot: Fix a warning message triggered by stop_other_cpus()
  x86/intel/moorestown: Change intel_scu_devices_create() to __devinit
  x86/numa: Set numa_nodes_parsed at acpi_numa_memory_affinity_init()
  x86/gart: Fix kmemleak warning
  x86: mce: Add the dropped timer interval init back
  x86/mce: Fix the MCE poll timer logic
This commit is contained in:
Linus Torvalds 2012-06-08 09:26:55 -07:00
commit 0b35d326f8
13 changed files with 168 additions and 91 deletions
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42
arch/x86/boot/header.S
View file

@ -94,10 +94,10 @@ bs_die:
.section ".bsdata", "a"
bugger_off_msg:
.ascii "Direct booting from floppy is no longer supported.\r\n"
.ascii "Please use a boot loader program instead.\r\n"
.ascii "Direct floppy boot is not supported. "
.ascii "Use a boot loader program instead.\r\n"
.ascii "\n"
.ascii "Remove disk and press any key to reboot . . .\r\n"
.ascii "Remove disk and press any key to reboot ...\r\n"
.byte 0
#ifdef CONFIG_EFI_STUB
@ -111,7 +111,7 @@ coff_header:
#else
.word 0x8664 # x86-64
#endif
.word 2 # nr_sections
.word 3 # nr_sections
.long 0 # TimeDateStamp
.long 0 # PointerToSymbolTable
.long 1 # NumberOfSymbols
@ -158,8 +158,8 @@ extra_header_fields:
#else
.quad 0 # ImageBase
#endif
.long 0x1000 # SectionAlignment
.long 0x200 # FileAlignment
.long 0x20 # SectionAlignment
.long 0x20 # FileAlignment
.word 0 # MajorOperatingSystemVersion
.word 0 # MinorOperatingSystemVersion
.word 0 # MajorImageVersion
@ -200,8 +200,10 @@ extra_header_fields:
# Section table
section_table:
.ascii ".text"
.byte 0
#
# The offset & size fields are filled in by build.c.
#
.ascii ".setup"
.byte 0
.byte 0
.long 0
@ -217,9 +219,8 @@ section_table:
#
# The EFI application loader requires a relocation section
# because EFI applications must be relocatable. But since
# we don't need the loader to fixup any relocs for us, we
# just create an empty (zero-length) .reloc section header.
# because EFI applications must be relocatable. The .reloc
# offset & size fields are filled in by build.c.
#
.ascii ".reloc"
.byte 0
@ -233,6 +234,25 @@ section_table:
.word 0 # NumberOfRelocations
.word 0 # NumberOfLineNumbers
.long 0x42100040 # Characteristics (section flags)
#
# The offset & size fields are filled in by build.c.
#
.ascii ".text"
.byte 0
.byte 0
.byte 0
.long 0
.long 0x0 # startup_{32,64}
.long 0 # Size of initialized data
# on disk
.long 0x0 # startup_{32,64}
.long 0 # PointerToRelocations
.long 0 # PointerToLineNumbers
.word 0 # NumberOfRelocations
.word 0 # NumberOfLineNumbers
.long 0x60500020 # Characteristics (section flags)
#endif /* CONFIG_EFI_STUB */
# Kernel attributes; used by setup. This is part 1 of the

172
arch/x86/boot/tools/build.c
View file

@ -50,6 +50,8 @@ typedef unsigned int u32;
u8 buf[SETUP_SECT_MAX*512];
int is_big_kernel;
#define PECOFF_RELOC_RESERVE 0x20
/*----------------------------------------------------------------------*/
static const u32 crctab32[] = {
@ -133,11 +135,103 @@ static void usage(void)
die("Usage: build setup system [> image]");
}
#ifdef CONFIG_EFI_STUB
static void update_pecoff_section_header(char *section_name, u32 offset, u32 size)
{
unsigned int pe_header;
unsigned short num_sections;
u8 *section;
pe_header = get_unaligned_le32(&buf[0x3c]);
num_sections = get_unaligned_le16(&buf[pe_header + 6]);
#ifdef CONFIG_X86_32
section = &buf[pe_header + 0xa8];
#else
section = &buf[pe_header + 0xb8];
#endif
while (num_sections > 0) {
if (strncmp((char*)section, section_name, 8) == 0) {
/* section header size field */
put_unaligned_le32(size, section + 0x8);
/* section header vma field */
put_unaligned_le32(offset, section + 0xc);
/* section header 'size of initialised data' field */
put_unaligned_le32(size, section + 0x10);
/* section header 'file offset' field */
put_unaligned_le32(offset, section + 0x14);
break;
}
section += 0x28;
num_sections--;
}
}
static void update_pecoff_setup_and_reloc(unsigned int size)
{
u32 setup_offset = 0x200;
u32 reloc_offset = size - PECOFF_RELOC_RESERVE;
u32 setup_size = reloc_offset - setup_offset;
update_pecoff_section_header(".setup", setup_offset, setup_size);
update_pecoff_section_header(".reloc", reloc_offset, PECOFF_RELOC_RESERVE);
/*
* Modify .reloc section contents with a single entry. The
* relocation is applied to offset 10 of the relocation section.
*/
put_unaligned_le32(reloc_offset + 10, &buf[reloc_offset]);
put_unaligned_le32(10, &buf[reloc_offset + 4]);
}
static void update_pecoff_text(unsigned int text_start, unsigned int file_sz)
{
unsigned int pe_header;
unsigned int text_sz = file_sz - text_start;
pe_header = get_unaligned_le32(&buf[0x3c]);
/* Size of image */
put_unaligned_le32(file_sz, &buf[pe_header + 0x50]);
/*
* Size of code: Subtract the size of the first sector (512 bytes)
* which includes the header.
*/
put_unaligned_le32(file_sz - 512, &buf[pe_header + 0x1c]);
#ifdef CONFIG_X86_32
/*
* Address of entry point.
*
* The EFI stub entry point is +16 bytes from the start of
* the .text section.
*/
put_unaligned_le32(text_start + 16, &buf[pe_header + 0x28]);
#else
/*
* Address of entry point. startup_32 is at the beginning and
* the 64-bit entry point (startup_64) is always 512 bytes
* after. The EFI stub entry point is 16 bytes after that, as
* the first instruction allows legacy loaders to jump over
* the EFI stub initialisation
*/
put_unaligned_le32(text_start + 528, &buf[pe_header + 0x28]);
#endif /* CONFIG_X86_32 */
update_pecoff_section_header(".text", text_start, text_sz);
}
#endif /* CONFIG_EFI_STUB */
int main(int argc, char ** argv)
{
#ifdef CONFIG_EFI_STUB
unsigned int file_sz, pe_header;
#endif
unsigned int i, sz, setup_sectors;
int c;
u32 sys_size;
@ -163,6 +257,12 @@ int main(int argc, char ** argv)
die("Boot block hasn't got boot flag (0xAA55)");
fclose(file);
#ifdef CONFIG_EFI_STUB
/* Reserve 0x20 bytes for .reloc section */
memset(buf+c, 0, PECOFF_RELOC_RESERVE);
c += PECOFF_RELOC_RESERVE;
#endif
/* Pad unused space with zeros */
setup_sectors = (c + 511) / 512;
if (setup_sectors < SETUP_SECT_MIN)
@ -170,6 +270,10 @@ int main(int argc, char ** argv)
i = setup_sectors*512;
memset(buf+c, 0, i-c);
#ifdef CONFIG_EFI_STUB
update_pecoff_setup_and_reloc(i);
#endif
/* Set the default root device */
put_unaligned_le16(DEFAULT_ROOT_DEV, &buf[508]);
@ -194,66 +298,8 @@ int main(int argc, char ** argv)
put_unaligned_le32(sys_size, &buf[0x1f4]);
#ifdef CONFIG_EFI_STUB
file_sz = sz + i + ((sys_size * 16) - sz);
pe_header = get_unaligned_le32(&buf[0x3c]);
/* Size of image */
put_unaligned_le32(file_sz, &buf[pe_header + 0x50]);
/*
* Subtract the size of the first section (512 bytes) which
* includes the header and .reloc section. The remaining size
* is that of the .text section.
*/
file_sz -= 512;
/* Size of code */
put_unaligned_le32(file_sz, &buf[pe_header + 0x1c]);
#ifdef CONFIG_X86_32
/*
* Address of entry point.
*
* The EFI stub entry point is +16 bytes from the start of
* the .text section.
*/
put_unaligned_le32(i + 16, &buf[pe_header + 0x28]);
/* .text size */
put_unaligned_le32(file_sz, &buf[pe_header + 0xb0]);
/* .text vma */
put_unaligned_le32(0x200, &buf[pe_header + 0xb4]);
/* .text size of initialised data */
put_unaligned_le32(file_sz, &buf[pe_header + 0xb8]);
/* .text file offset */
put_unaligned_le32(0x200, &buf[pe_header + 0xbc]);
#else
/*
* Address of entry point. startup_32 is at the beginning and
* the 64-bit entry point (startup_64) is always 512 bytes
* after. The EFI stub entry point is 16 bytes after that, as
* the first instruction allows legacy loaders to jump over
* the EFI stub initialisation
*/
put_unaligned_le32(i + 528, &buf[pe_header + 0x28]);
/* .text size */
put_unaligned_le32(file_sz, &buf[pe_header + 0xc0]);
/* .text vma */
put_unaligned_le32(0x200, &buf[pe_header + 0xc4]);
/* .text size of initialised data */
put_unaligned_le32(file_sz, &buf[pe_header + 0xc8]);
/* .text file offset */
put_unaligned_le32(0x200, &buf[pe_header + 0xcc]);
#endif /* CONFIG_X86_32 */
#endif /* CONFIG_EFI_STUB */
update_pecoff_text(setup_sectors * 512, sz + i + ((sys_size * 16) - sz));
#endif
crc = partial_crc32(buf, i, crc);
if (fwrite(buf, 1, i, stdout) != i)

14
arch/x86/include/asm/nmi.h
View file

@ -54,6 +54,20 @@ struct nmiaction {
__register_nmi_handler((t), &fn##_na); \
})
/*
* For special handlers that register/unregister in the
* init section only. This should be considered rare.
*/
#define register_nmi_handler_initonly(t, fn, fg, n) \
({ \
static struct nmiaction fn##_na __initdata = { \
.handler = (fn), \
.name = (n), \
.flags = (fg), \
}; \
__register_nmi_handler((t), &fn##_na); \
})
int __register_nmi_handler(unsigned int, struct nmiaction *);
void unregister_nmi_handler(unsigned int, const char *);

1
arch/x86/include/asm/uv/uv_bau.h
View file

@ -149,7 +149,6 @@
/* 4 bits of software ack period */
#define UV2_ACK_MASK 0x7UL
#define UV2_ACK_UNITS_SHFT 3
#define UV2_LEG_SHFT UV2H_LB_BAU_MISC_CONTROL_USE_LEGACY_DESCRIPTOR_FORMATS_SHFT
#define UV2_EXT_SHFT UV2H_LB_BAU_MISC_CONTROL_ENABLE_EXTENDED_SB_STATUS_SHFT
/*

6
arch/x86/kernel/aperture_64.c
View file

@ -20,7 +20,6 @@
#include <linux/bitops.h>
#include <linux/ioport.h>
#include <linux/suspend.h>
#include <linux/kmemleak.h>
#include <asm/e820.h>
#include <asm/io.h>
#include <asm/iommu.h>
@ -95,11 +94,6 @@ static u32 __init allocate_aperture(void)
return 0;
}
memblock_reserve(addr, aper_size);
/*
* Kmemleak should not scan this block as it may not be mapped via the
* kernel direct mapping.
*/
kmemleak_ignore(phys_to_virt(addr));
printk(KERN_INFO "Mapping aperture over %d KB of RAM @ %lx\n",
aper_size >> 10, addr);
insert_aperture_resource((u32)addr, aper_size);

4
arch/x86/kernel/apic/io_apic.c
View file

@ -1195,7 +1195,7 @@ static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
BUG_ON(!cfg->vector);
vector = cfg->vector;
for_each_cpu_and(cpu, cfg->domain, cpu_online_mask)
for_each_cpu(cpu, cfg->domain)
per_cpu(vector_irq, cpu)[vector] = -1;
cfg->vector = 0;
@ -1203,7 +1203,7 @@ static void __clear_irq_vector(int irq, struct irq_cfg *cfg)
if (likely(!cfg->move_in_progress))
return;
for_each_cpu_and(cpu, cfg->old_domain, cpu_online_mask) {
for_each_cpu(cpu, cfg->old_domain) {
for (vector = FIRST_EXTERNAL_VECTOR; vector < NR_VECTORS;
vector++) {
if (per_cpu(vector_irq, cpu)[vector] != irq)

2
arch/x86/kernel/cpu/mcheck/mce.c
View file

@ -1557,7 +1557,7 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
static void __mcheck_cpu_init_timer(void)
{
struct timer_list *t = &__get_cpu_var(mce_timer);
unsigned long iv = __this_cpu_read(mce_next_interval);
unsigned long iv = check_interval * HZ;
setup_timer(t, mce_timer_fn, smp_processor_id());

4
arch/x86/kernel/nmi_selftest.c
View file

@ -42,7 +42,7 @@ static int __init nmi_unk_cb(unsigned int val, struct pt_regs *regs)
static void __init init_nmi_testsuite(void)
{
/* trap all the unknown NMIs we may generate */
register_nmi_handler(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk");
register_nmi_handler_initonly(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk");
}
static void __init cleanup_nmi_testsuite(void)
@ -64,7 +64,7 @@ static void __init test_nmi_ipi(struct cpumask *mask)
{
unsigned long timeout;
if (register_nmi_handler(NMI_LOCAL, test_nmi_ipi_callback,
if (register_nmi_handler_initonly(NMI_LOCAL, test_nmi_ipi_callback,
NMI_FLAG_FIRST, "nmi_selftest")) {
nmi_fail = FAILURE;
return;

6
arch/x86/kernel/reboot.c
View file

@ -639,9 +639,11 @@ void native_machine_shutdown(void)
set_cpus_allowed_ptr(current, cpumask_of(reboot_cpu_id));
/*
* O.K Now that I'm on the appropriate processor,
* stop all of the others.
* O.K Now that I'm on the appropriate processor, stop all of the
* others. Also disable the local irq to not receive the per-cpu
* timer interrupt which may trigger scheduler's load balance.
*/
local_irq_disable();
stop_other_cpus();
#endif

3
arch/x86/mm/init.c
View file

@ -62,7 +62,8 @@ static void __init find_early_table_space(struct map_range *mr, unsigned long en
extra += PMD_SIZE;
#endif
/* The first 2/4M doesn't use large pages. */
extra += mr->end - mr->start;
if (mr->start < PMD_SIZE)
extra += mr->end - mr->start;
ptes = (extra + PAGE_SIZE - 1) >> PAGE_SHIFT;
} else

2
arch/x86/mm/srat.c
View file

@ -176,6 +176,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
return;
}
node_set(node, numa_nodes_parsed);
printk(KERN_INFO "SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n",
node, pxm,
(unsigned long long) start, (unsigned long long) end - 1);

2
arch/x86/platform/mrst/mrst.c
View file

@ -782,7 +782,7 @@ BLOCKING_NOTIFIER_HEAD(intel_scu_notifier);
EXPORT_SYMBOL_GPL(intel_scu_notifier);
/* Called by IPC driver */
void intel_scu_devices_create(void)
void __devinit intel_scu_devices_create(void)
{
int i;

1
arch/x86/platform/uv/tlb_uv.c
View file

@ -1295,7 +1295,6 @@ static void __init enable_timeouts(void)
*/
mmr_image |= (1L << SOFTACK_MSHIFT);
if (is_uv2_hub()) {
mmr_image &= ~(1L << UV2_LEG_SHFT);
mmr_image |= (1L << UV2_EXT_SHFT);
}
write_mmr_misc_control(pnode, mmr_image);