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0ad5bce7409d681a5655c66e64bb0eb740b89c1f
android_kernel_xiaomi_sm8450/arch/x86/kernel
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Jeremy Fitzhardinge 0ad5bce740 x86: fix possible x86_64 and EFI regression 
Russ Anderson reported a boot crash with EFI and latest mainline:

 BIOS-e820: 00000000fffa0000 - 00000000fffac000 (reserved)
Pid: 0, comm: swapper Not tainted 2.6.27-rc5-00100-gec0c15a-dirty #5

Call Trace:
 [<ffffffff80849195>] early_idt_handler+0x55/0x69
 [<ffffffff80313e52>] __memcpy+0x12/0xa4
 [<ffffffff80859015>] efi_init+0xce/0x932
 [<ffffffff80869c83>] setup_early_serial8250_console+0x2d/0x36a
 [<ffffffff80238688>] __insert_resource+0x18/0xc8
 [<ffffffff8084f6de>] setup_arch+0x3a7/0x632
 [<ffffffff808499ed>] start_kernel+0x91/0x367
 [<ffffffff80849393>] x86_64_start_kernel+0xe3/0xe7
 [<ffffffff808492b0>] x86_64_start_kernel+0x0/0xe7

 RIP 0x10

Such a crash is possible if the CPU in this system is a 64-bit
processor which doesn't support NX (ie, old Intel P4 -based64-bit
processors).

Certainly, if we support such processors, then we should start with
_PAGE_NX initially clear in __supported_pte_flags, and then set it once
we've established that the processor does indeed support NX.  That will
prevent early_ioremap - or anything else - from trying to set it.

The simple fix is to simply call check_efer() earlier.

Reported-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-09-12 11:40:57 +02:00
..
acpi
x86: fix i486 suspend to disk CR4 oops
2008-08-18 08:50:19 +02:00
cpu
x86: cpu_init(): fix memory leak when using CPU hotplug
2008-09-06 20:48:16 +02:00
.gitignore
arch/x86/kernel/.gitignore: Added vmlinux.lds to .gitignore file because it shouldn't be tracked.
2008-07-10 10:13:51 -07:00
alternative.c
x86: use X86_FEATURE_NOPL in alternatives
2008-09-05 16:14:01 -07:00
amd_iommu_init.c
x86, AMD IOMMU: initialize dma_ops after sysfs registration
2008-08-15 13:56:56 +02:00
amd_iommu.c
x86 iommu: remove unneeded parenthesis
2008-08-19 02:16:24 +02:00
aperture_64.c
x86: make only GART code include gart.h
2008-07-11 11:00:54 +02:00
apic_32.c
x86: resurrect proper handling of maxcpus= kernel option (v2)
2008-08-14 11:18:08 +02:00
apic_64.c
x86: resurrect proper handling of maxcpus= kernel option (v2)
2008-08-14 11:18:08 +02:00
apm_32.c
remove include/linux/pm_legacy.h
2008-07-24 10:47:22 -07:00
asm-offsets_32.c
x86/paravirt: split sysret and sysexit
2008-07-08 13:13:15 +02:00
asm-offsets_64.c
xen64: add asm-offsets
2008-07-16 10:58:55 +02:00
asm-offsets.c
…
audit_64.c
…
bios_uv.c
x86 BIOS interface for RTC on SGI UV
2008-07-18 14:35:14 +02:00
bootflag.c
x86: coding style cleanup for kernel/bootflag.c
2008-01-30 13:32:31 +01:00
cpuid.c
x86: cpuid: correct return value on partial operations
2008-08-25 17:46:12 -07:00
crash_dump_32.c
kmap leak fix for x86_32 kdump
2007-10-19 11:53:33 -07:00
crash_dump_64.c
…
crash.c
x86: allow machine_crash_shutdown to be replaced
2008-04-27 12:00:29 +03:00
doublefault_32.c
x86: unify tss_struct
2008-01-30 13:31:31 +01:00
ds.c
x86: debug Store - call kfree if only we really need it
2008-04-17 17:41:34 +02:00
e820.c
x86: fix memmap=exactmap boot argument
2008-09-09 11:54:53 -07:00
early_printk.c
x86, generic: mark early_printk as asmlinkage
2008-06-18 13:11:01 +02:00
early-quirks.c
Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus
2008-07-21 16:37:17 +02:00
efi_32.c
x86: fix i486 suspend to disk CR4 oops
2008-08-18 08:50:19 +02:00
efi_64.c
x86: add flags parameter to reserve_bootmem_generic()
2008-07-08 11:49:49 +02:00
efi_stub_32.S
…
efi_stub_64.S
x86: EFI runtime service support
2008-01-30 13:31:19 +01:00
efi.c
x86: introduce max_low_pfn_mapped for 64-bit
2008-07-11 10:24:04 +02:00
entry_32.S
i386 syscall audit fast-path
2008-07-23 18:00:30 -07:00
entry_64.S
x86_64 ia32 syscall audit fast-path
2008-07-23 17:55:22 -07:00
ftrace.c
ftrace: store mcount address in rec->ip
2008-06-23 22:10:56 +02:00
genapic_64.c
GRU Driver: export is_uv_system(), zap_page_range() & follow_page()
2008-07-30 09:41:48 -07:00
genapic_flat_64.c
NR_CPUS: Replace NR_CPUS in arch/x86/kernel/genapic_flat_64.c
2008-07-20 10:21:10 +02:00
genx2apic_uv_x.c
x86: fix section mismatch warning - uv_cpu_init
2008-08-22 14:12:20 +02:00
geode_32.c
x86, geode: add a VSA2 ID for General Software
2008-06-19 14:19:03 +02:00
head32.c
x86: extract common part of head32.c and head64.c into head.c
2008-06-05 15:10:02 +02:00
head64.c
x86-64: fix overlap of modules and fixmap areas
2008-08-15 17:31:50 +02:00
head_32.S
x86: fix cpu hotplug on 32bit
2008-07-27 21:43:11 +02:00
head_64.S
Revert "x86_64: there's no need to preallocate level1_fixmap_pgt"
2008-07-16 11:07:30 +02:00
head.c
x86: move reserve_setup_data to setup.c
2008-07-08 13:16:14 +02:00
hpet.c
x86: HPET: read back compare register before reading counter
2008-09-06 07:21:17 +02:00
i386_ksyms_32.c
ftrace: store mcount address in rec->ip
2008-06-23 22:10:56 +02:00
i387.c
x86 ptrace: fix PTRACE_GETFPXREGS error
2008-07-01 11:03:31 +02:00
i8237.c
Driver core: change sysdev classes to use dynamic kobject names
2008-01-24 20:40:40 -08:00
i8253.c
x86: cleanup div_sc() usage
2008-04-26 17:35:47 +02:00
i8259.c
i8259: fix final ugliness
2008-06-02 11:55:52 +02:00
init_task.c
[PATCH] take init_files to fs/file.c
2008-05-16 17:22:20 -04:00
io_apic_32.c
x86: Restore proper vector locking during cpu hotplug
2008-08-11 10:37:34 +02:00
io_apic_64.c
x86: Restore proper vector locking during cpu hotplug
2008-08-11 10:37:34 +02:00
io_delay.c
x86: add io delay quirk for Presario F700
2008-09-03 16:42:51 -07:00
ioport.c
x86: refactor ioport unification
2008-01-30 13:33:10 +01:00
ipi.c
x86: APIC: remove apic_write_around(); use alternatives
2008-07-18 12:51:21 +02:00
irq_32.c
x86: use __page_aligned_data/bss
2008-07-16 10:54:39 +02:00
irq_64.c
x86: make /proc/stat account for all interrupts
2008-05-25 07:11:49 +02:00
irqinit_32.c
x86: rename the i8259_32/64.c leftovers to irqinit_32/64.c
2008-05-24 16:47:39 +02:00
irqinit_64.c
x86-64: make BUILD_IRQ() also reset section back
2008-07-24 12:49:26 -07:00
k8.c
…
kdebugfs.c
arch/x86/kernel/kdebugfs.c: introduce missing kfree
2008-09-10 14:03:49 +02:00
kgdb.c
x86: KGDB build fix
2008-04-19 19:19:54 +02:00
kprobes.c
kprobes: improve kretprobe scalability with hashed locking
2008-07-25 10:53:30 -07:00
kvm.c
x86: KVM guest: hypercall batching
2008-04-27 12:00:28 +03:00
kvmclock.c
x86: KVM guest: make kvm_smp_prepare_boot_cpu() static
2008-07-20 12:42:37 +03:00
ldt.c
cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu
2008-07-26 16:40:33 +02:00
machine_kexec_32.c
kexec jump: fix for ftrace
2008-08-15 08:35:43 -07:00
machine_kexec_64.c
kexec jump
2008-07-26 12:00:04 -07:00
Makefile
Merge branch 'x86/paravirt-spinlocks' into x86/for-linus
2008-07-21 16:45:56 +02:00
mca_32.c
x86: coding style fixes to arch/x86/kernel/mca_32.c
2008-04-17 17:40:49 +02:00
mfgpt_32.c
x86, geode-mfgpt: check IRQ before using MFGPT as clocksource
2008-08-15 17:12:32 +02:00
microcode.c
cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu
2008-07-26 16:40:33 +02:00
mmconf-fam10h_64.c
x86: mmconf: fix section mismatch warning
2008-08-18 07:49:06 +02:00
module_32.c
…
module_64.c
PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures
2008-07-24 10:47:21 -07:00
mpparse.c
x86: mpparse.c: fix section mismatch warning
2008-08-18 07:49:26 +02:00
msr.c
x86: msr: correct return value on partial operations
2008-08-25 17:46:12 -07:00
nmi.c
x86, nmi: clean UP NMI watchdog failure message
2008-08-15 15:35:31 +02:00
numaq_32.c
x86: fix BUG: unable to handle kernel paging request (numaq_tsc_disable)
2008-08-21 12:52:01 +02:00
olpc.c
x86: olpc: add One Laptop Per Child architecture support
2008-04-29 08:06:07 -07:00
paravirt_patch_32.c
x86/paravirt: split sysret and sysexit
2008-07-08 13:13:15 +02:00
paravirt_patch_64.c
x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility userspace
2008-07-08 13:15:52 +02:00
paravirt.c
x86: export pv_lock_ops non-GPL
2008-08-21 12:42:23 +02:00
pci-calgary_64.c
x86: use WARN() in arch/x86/kernel
2008-08-21 10:01:52 +02:00
pci-dma.c
generic, x86: fix add iommu_num_pages helper function
2008-07-29 12:12:48 +02:00
pci-gart_64.c
Merge branch 'x86/iommu' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into for-linus
2008-07-28 14:31:10 -07:00
pci-nommu.c
dma-mapping: add the device argument to dma_mapping_error()
2008-07-26 12:00:03 -07:00
pci-swiotlb_64.c
dma-mapping: add the device argument to dma_mapping_error()
2008-07-26 12:00:03 -07:00
pcspeaker.c
…
pmtimer_64.c
x86: move pmtmr related declarations
2008-01-30 13:30:18 +01:00
probe_roms_32.c
x86: seperate probe_roms into another file
2008-07-08 12:50:05 +02:00
process_32.c
x86: invalidate caches before going into suspend
2008-08-15 14:04:30 +02:00
process_64.c
x86: invalidate caches before going into suspend
2008-08-15 14:04:30 +02:00
process.c
Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus
2008-07-21 16:37:17 +02:00
ptrace.c
x86 ptrace: user-sets-TF nits
2008-07-16 12:15:17 -07:00
pvclock.c
x86: Add structs and functions for paravirt clocksource
2008-06-24 21:02:31 +03:00
quirks.c
Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-07-15 10:39:57 -07:00
reboot_fixups_32.c
x86: constify data in reboot.c
2008-05-25 08:58:30 +02:00
reboot.c
cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu
2008-07-26 16:40:33 +02:00
relocate_kernel_32.S
kexec jump: check code size in control page
2008-08-15 08:35:42 -07:00
relocate_kernel_64.S
x86: relocate_kernel - use predefined macroses for page attributes
2008-04-17 17:41:29 +02:00
rtc.c
provide rtc_cmos platform device
2008-06-12 18:05:42 -07:00
scx200_32.c
x86: fix sparse warning in kernel/scx200_32.c
2008-01-31 22:05:45 +01:00
setup_percpu.c
cpu masks: optimize and clean up cpumask_of_cpu()
2008-07-28 22:20:41 +02:00
setup.c
x86: fix possible x86_64 and EFI regression
2008-09-12 11:40:57 +02:00
sigframe.h
x86: move struct definitions to unifed sigframe.h
2008-04-17 17:40:46 +02:00
signal_32.c
Merge branch 'sched/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-07-23 19:36:53 -07:00
signal_64.c
x64, fpu: fix possible FPU leakage in error conditions
2008-07-26 16:37:04 +02:00
smp.c
generic-ipi: fixlet
2008-07-06 14:01:50 +02:00
smpboot.c
x86: fix section mismatch warning - uv_cpu_init
2008-08-22 14:12:20 +02:00
smpcommon.c
x86: change init_gdt to update the gdt via write_gdt, rather than a direct write.
2008-08-15 19:16:05 +02:00
stacktrace.c
stacktrace: fix modular build, export print_stack_trace and save_stack_trace
2008-06-30 09:20:55 +02:00
step.c
x86 ptrace: user-sets-TF nits
2008-07-16 12:15:17 -07:00
summit_32.c
x86: make generic arch support NUMAQ
2008-06-10 11:34:42 +02:00
sys_i386_32.c
x86: coding style fixes to arch/x86/kernel/sys_i386_32.c
2008-06-10 12:34:54 +02:00
sys_x86_64.c
unified (weak) sys_pipe implementation
2008-05-03 13:50:33 -07:00
syscall_64.c
x86: coding style fixes to arch/x86/kernel/syscall_64.c
2008-04-17 17:40:48 +02:00
syscall_table_32.S
flag parameters add-on: remove epoll_create size param
2008-07-24 10:47:29 -07:00
tce_64.c
x86: Create clflush() inline, remove hardcoded wbinvd
2007-10-17 20:16:12 +02:00
test_nx.c
x86: Explicitly include required header files.
2008-04-17 17:41:15 +02:00
test_rodata.c
x86: include proper prototypes for rodata_test
2008-02-14 23:30:20 +01:00
time_32.c
x86: add ->pre_time_init to x86_quirks
2008-07-20 09:25:52 +02:00
time_64.c
x86: merge tsc_init and clocksource code
2008-07-09 07:43:27 +02:00
tlb_32.c
on_each_cpu(): kill unused 'retry' parameter
2008-06-26 11:24:38 +02:00
tlb_64.c
Merge branch 'generic-ipi' into generic-ipi-for-linus
2008-07-15 21:55:59 +02:00
tlb_uv.c
x86, SGI UV: hardcode the TLB flush interrupt system vector
2008-08-20 12:36:03 +02:00
tls.c
asmlinkage_protect replaces prevent_tail_call
2008-04-10 17:28:26 -07:00
tls.h
x86: x86 user_regset TLS
2008-01-30 13:31:52 +01:00
topology.c
x86: fix section mismatch warning in topology.c:arch_register_cpu
2008-02-19 16:18:30 +01:00
trampoline_32.S
x86: trampoline_32.S - switch to .cpuinit.data
2008-04-26 17:35:47 +02:00
trampoline_64.S
x86: move suspend wakeup code to C
2008-04-17 17:41:37 +02:00
trampoline.c
x86: extend e820 ealy_res support 32bit
2008-05-25 10:55:11 +02:00
traps_32.c
x86: introducing asm-x86/traps.h
2008-07-18 18:51:57 +02:00
traps_64.c
x64, fpu: fix possible FPU leakage in error conditions
2008-07-26 16:37:04 +02:00
tsc_sync.c
x86: use WARN() in arch/x86/kernel
2008-08-21 10:01:52 +02:00
tsc.c
x86: Change warning message in TSC calibration.
2008-09-03 20:10:37 -07:00
verify_cpu_64.S
…
visws_quirks.c
x86: resurrect proper handling of maxcpus= kernel option (v2)
2008-08-14 11:18:08 +02:00
vm86_32.c
x86: replace most VM86 flags with flags from processor-flags.h
2008-04-17 17:41:33 +02:00
vmi_32.c
x86: Fix broken VMI in 2.6.27-rc..
2008-08-08 15:22:02 -07:00
vmiclock_32.c
x86: rename paravirtualized TSC functions
2008-07-09 07:43:28 +02:00
vmlinux_32.lds.S
kexec jump: check code size in control page
2008-08-15 08:35:42 -07:00
vmlinux_64.lds.S
Merge branch 'core/rodata' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2008-07-14 15:28:10 -07:00
vmlinux.lds.S
…
vsmp_64.c
x86: vsmp_64 add missing includes
2008-05-25 08:58:24 +02:00
vsyscall_64.c
Merge branch 'generic-ipi' into generic-ipi-for-linus
2008-07-15 21:55:59 +02:00
x8664_ksyms_64.c
Merge branch 'auto-ftrace-next' into tracing/for-linus
2008-07-14 16:11:52 +02:00