summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-09-19 09:07:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-09-19 09:07:47 -0700
commit7a5e87867e9fe043c3067a864124caf2b8e7fb99 (patch)
tree6ff53a7e65dabc9f25d6e162e38176da4995a274 /arch
parent9f47112975fdc32e545e079f42a17bbd0be236fc (diff)
parent5ac385d83525fb8924ef87c18a4dc49998366394 (diff)
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar: "Misc fixes: EFI fixes, a build fix, a page table dumping (debug) fix and a clang build fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/arm64: Fix fdt-related memory reservation x86/mm: Apply the section attribute to the variable, not its type x86/efi: Fixup GOT in all boot code paths x86/efi: Only load initrd above 4g on second try x86-64, ptdump: Mark espfix area only if existent x86, irq: Fix build error caused by 9eabc99a635a77cbf09
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/mm/init.c3
-rw-r--r--arch/x86/boot/compressed/eboot.c18
-rw-r--r--arch/x86/boot/compressed/head_32.S54
-rw-r--r--arch/x86/boot/compressed/head_64.S56
-rw-r--r--arch/x86/include/asm/io_apic.h1
-rw-r--r--arch/x86/mm/dump_pagetables.c4
-rw-r--r--arch/x86/mm/mmap.c2
7 files changed, 99 insertions, 39 deletions
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 5472c2401876..a83061f37e43 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -149,8 +149,7 @@ void __init arm64_memblock_init(void)
memblock_reserve(__virt_to_phys(initrd_start), initrd_end - initrd_start);
#endif
- if (!efi_enabled(EFI_MEMMAP))
- early_init_fdt_scan_reserved_mem();
+ early_init_fdt_scan_reserved_mem();
/* 4GB maximum for 32-bit only capable devices */
if (IS_ENABLED(CONFIG_ZONE_DMA))
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index f277184e2ac1..dca9842d8f91 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -1032,7 +1032,6 @@ struct boot_params *make_boot_params(struct efi_config *c)
int i;
unsigned long ramdisk_addr;
unsigned long ramdisk_size;
- unsigned long initrd_addr_max;
efi_early = c;
sys_table = (efi_system_table_t *)(unsigned long)efi_early->table;
@@ -1095,15 +1094,20 @@ struct boot_params *make_boot_params(struct efi_config *c)
memset(sdt, 0, sizeof(*sdt));
- if (hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G)
- initrd_addr_max = -1UL;
- else
- initrd_addr_max = hdr->initrd_addr_max;
-
status = handle_cmdline_files(sys_table, image,
(char *)(unsigned long)hdr->cmd_line_ptr,
- "initrd=", initrd_addr_max,
+ "initrd=", hdr->initrd_addr_max,
&ramdisk_addr, &ramdisk_size);
+
+ if (status != EFI_SUCCESS &&
+ hdr->xloadflags & XLF_CAN_BE_LOADED_ABOVE_4G) {
+ efi_printk(sys_table, "Trying to load files to higher address\n");
+ status = handle_cmdline_files(sys_table, image,
+ (char *)(unsigned long)hdr->cmd_line_ptr,
+ "initrd=", -1UL,
+ &ramdisk_addr, &ramdisk_size);
+ }
+
if (status != EFI_SUCCESS)
goto fail2;
hdr->ramdisk_image = ramdisk_addr & 0xffffffff;
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index cbed1407a5cd..d6b8aa4c986c 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -30,6 +30,33 @@
#include <asm/boot.h>
#include <asm/asm-offsets.h>
+/*
+ * Adjust our own GOT
+ *
+ * The relocation base must be in %ebx
+ *
+ * It is safe to call this macro more than once, because in some of the
+ * code paths multiple invocations are inevitable, e.g. via the efi*
+ * entry points.
+ *
+ * Relocation is only performed the first time.
+ */
+.macro FIXUP_GOT
+ cmpb $1, got_fixed(%ebx)
+ je 2f
+
+ leal _got(%ebx), %edx
+ leal _egot(%ebx), %ecx
+1:
+ cmpl %ecx, %edx
+ jae 2f
+ addl %ebx, (%edx)
+ addl $4, %edx
+ jmp 1b
+2:
+ movb $1, got_fixed(%ebx)
+.endm
+
__HEAD
ENTRY(startup_32)
#ifdef CONFIG_EFI_STUB
@@ -56,6 +83,9 @@ ENTRY(efi_pe_entry)
add %esi, 88(%eax)
pushl %eax
+ movl %esi, %ebx
+ FIXUP_GOT
+
call make_boot_params
cmpl $0, %eax
je fail
@@ -81,6 +111,10 @@ ENTRY(efi32_stub_entry)
leal efi32_config(%esi), %eax
add %esi, 88(%eax)
pushl %eax
+
+ movl %esi, %ebx
+ FIXUP_GOT
+
2:
call efi_main
cmpl $0, %eax
@@ -190,19 +224,7 @@ relocated:
shrl $2, %ecx
rep stosl
-/*
- * Adjust our own GOT
- */
- leal _got(%ebx), %edx
- leal _egot(%ebx), %ecx
-1:
- cmpl %ecx, %edx
- jae 2f
- addl %ebx, (%edx)
- addl $4, %edx
- jmp 1b
-2:
-
+ FIXUP_GOT
/*
* Do the decompression, and jump to the new kernel..
*/
@@ -225,8 +247,12 @@ relocated:
xorl %ebx, %ebx
jmp *%eax
-#ifdef CONFIG_EFI_STUB
.data
+/* Have we relocated the GOT? */
+got_fixed:
+ .byte 0
+
+#ifdef CONFIG_EFI_STUB
efi32_config:
.fill 11,8,0
.long efi_call_phys
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 2884e0c3e8a5..50f69c7eaaf4 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -32,6 +32,33 @@
#include <asm/processor-flags.h>
#include <asm/asm-offsets.h>
+/*
+ * Adjust our own GOT
+ *
+ * The relocation base must be in %rbx
+ *
+ * It is safe to call this macro more than once, because in some of the
+ * code paths multiple invocations are inevitable, e.g. via the efi*
+ * entry points.
+ *
+ * Relocation is only performed the first time.
+ */
+.macro FIXUP_GOT
+ cmpb $1, got_fixed(%rip)
+ je 2f
+
+ leaq _got(%rip), %rdx
+ leaq _egot(%rip), %rcx
+1:
+ cmpq %rcx, %rdx
+ jae 2f
+ addq %rbx, (%rdx)
+ addq $8, %rdx
+ jmp 1b
+2:
+ movb $1, got_fixed(%rip)
+.endm
+
__HEAD
.code32
ENTRY(startup_32)
@@ -252,10 +279,13 @@ ENTRY(efi_pe_entry)
subq $1b, %rbp
/*
- * Relocate efi_config->call().
+ * Relocate efi_config->call() and the GOT entries.
*/
addq %rbp, efi64_config+88(%rip)
+ movq %rbp, %rbx
+ FIXUP_GOT
+
movq %rax, %rdi
call make_boot_params
cmpq $0,%rax
@@ -271,10 +301,13 @@ handover_entry:
subq $1b, %rbp
/*
- * Relocate efi_config->call().
+ * Relocate efi_config->call() and the GOT entries.
*/
movq efi_config(%rip), %rax
addq %rbp, 88(%rax)
+
+ movq %rbp, %rbx
+ FIXUP_GOT
2:
movq efi_config(%rip), %rdi
call efi_main
@@ -385,19 +418,8 @@ relocated:
shrq $3, %rcx
rep stosq
-/*
- * Adjust our own GOT
- */
- leaq _got(%rip), %rdx
- leaq _egot(%rip), %rcx
-1:
- cmpq %rcx, %rdx
- jae 2f
- addq %rbx, (%rdx)
- addq $8, %rdx
- jmp 1b
-2:
-
+ FIXUP_GOT
+
/*
* Do the decompression, and jump to the new kernel..
*/
@@ -437,6 +459,10 @@ gdt:
.quad 0x0000000000000000 /* TS continued */
gdt_end:
+/* Have we relocated the GOT? */
+got_fixed:
+ .byte 0
+
#ifdef CONFIG_EFI_STUB
efi_config:
.quad 0
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 478c490f3654..1733ab49ac5e 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -239,6 +239,7 @@ static inline int mp_find_ioapic(u32 gsi) { return 0; }
static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; }
static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; }
static inline void mp_unmap_irq(int irq) { }
+static inline bool mp_should_keep_irq(struct device *dev) { return 1; }
static inline int save_ioapic_entries(void)
{
diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c
index 167ffcac16ed..95a427e57887 100644
--- a/arch/x86/mm/dump_pagetables.c
+++ b/arch/x86/mm/dump_pagetables.c
@@ -48,7 +48,9 @@ enum address_markers_idx {
LOW_KERNEL_NR,
VMALLOC_START_NR,
VMEMMAP_START_NR,
+# ifdef CONFIG_X86_ESPFIX64
ESPFIX_START_NR,
+# endif
HIGH_KERNEL_NR,
MODULES_VADDR_NR,
MODULES_END_NR,
@@ -71,7 +73,9 @@ static struct addr_marker address_markers[] = {
{ PAGE_OFFSET, "Low Kernel Mapping" },
{ VMALLOC_START, "vmalloc() Area" },
{ VMEMMAP_START, "Vmemmap" },
+# ifdef CONFIG_X86_ESPFIX64
{ ESPFIX_BASE_ADDR, "ESPfix Area", 16 },
+# endif
{ __START_KERNEL_map, "High Kernel Mapping" },
{ MODULES_VADDR, "Modules" },
{ MODULES_END, "End Modules" },
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index 25e7e1372bb2..919b91205cd4 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -31,7 +31,7 @@
#include <linux/sched.h>
#include <asm/elf.h>
-struct __read_mostly va_alignment va_align = {
+struct va_alignment __read_mostly va_align = {
.flags = -1,
};