Tony Luck 548acf1923 x86/mm: Expand the exception table logic to allow new handling options ... Huge amounts of help from Andy Lutomirski and Borislav Petkov to produce this. Andy provided the inspiration to add classes to the exception table with a clever bit-squeezing trick, Boris pointed out how much cleaner it would all be if we just had a new field. Linus Torvalds blessed the expansion with: ' I'd rather not be clever in order to save just a tiny amount of space in the exception table, which isn't really criticial for anybody. ' The third field is another relative function pointer, this one to a handler that executes the actions. We start out with three handlers: 1: Legacy - just jumps the to fixup IP 2: Fault - provide the trap number in %ax to the fixup code 3: Cleaned up legacy for the uaccess error hack Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/f6af78fcbd348cf4939875cfda9c19689b5e50b8.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-02-18 09:21:46 +01:00
..
acpi	x86, ACPI: Handle apic/x2apic entries in MADT in correct order	2015-10-15 01:31:06 +02:00
apic	x86/platform/UV: Remove EFI memmap quirk for UV2+	2016-01-19 11:58:56 +01:00
cpu	x86/mce/AMD: Set MCAX Enable bit	2016-02-01 10:53:59 +01:00
fpu	x86/fpu: Disable AVX when eagerfpu is off	2016-01-12 11:51:21 +01:00
kprobes	x86/mm: Expand the exception table logic to allow new handling options	2016-02-18 09:21:46 +01:00
.gitignore
alternative.c	x86/alternatives: Make optimize_nops() interrupt safe and synced	2015-09-03 21:27:47 +02:00
amd_gart_64.c
amd_nb.c	x86/gart: Check for GART support before accessing GART registers	2015-05-06 11:15:53 +02:00
apb_timer.c	x86/asm/tsc: Rename native_read_tsc() to rdtsc()	2015-07-06 15:23:28 +02:00
aperture_64.c	x86/gart: Check for GART support before accessing GART registers	2015-05-06 11:15:53 +02:00
apm_32.c	apm32: Fix cputime == jiffies assumption	2015-07-29 15:44:58 +02:00
asm-offsets_32.c	x86: Remove unused TI_cpu	2015-05-05 20:48:02 +02:00
asm-offsets_64.c	x86/entry, x86/paravirt: Remove the unused usergs_sysret32 PV op	2015-11-23 10:48:16 +01:00
asm-offsets.c	x86/paravirt: Remove the unused irq_enable_sysexit pv op	2015-11-23 10:48:16 +01:00
audit_64.c
bootflag.c	x86: don't use module_init for non-modular core bootflag code	2015-06-16 14:12:34 -04:00
check.c	Linux 4.2-rc8	2015-08-25 09:59:19 +02:00
cpuid.c	new helpers: no_seek_end_llseek{,_size}()	2015-12-23 10:41:31 -05:00
crash_dump_32.c
crash_dump_64.c
crash.c	perf, x86: Stop Intel PT before kdump starts	2015-11-23 09:58:26 +01:00
devicetree.c	Replace module_init with equivalent device_initcall in non modules.	2015-07-02 10:30:48 -07:00
doublefault.c
dumpstack_32.c	Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-13 13:23:34 -07:00
dumpstack_64.c
dumpstack.c	Merge branch 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-13 13:23:34 -07:00
e820.c	x86/e820: Deinline e820_type_to_string, save 126 bytes	2015-09-30 21:54:40 +02:00
early_printk.c	x86/early_printk: Set __iomem address space for IO	2015-10-13 21:45:56 +02:00
early-quirks.c	Linux 4.4-rc2	2015-11-23 09:04:05 +01:00
espfix_64.c	Merge branch 'x86/urgent' into x86/asm, before applying dependent patches	2015-07-31 10:23:35 +02:00
ftrace.c	x86: ftrace: Fix the comments for ftrace_modify_code_direct()	2016-01-04 18:06:38 -05:00
head32.c
head64.c	x86/platform/intel-mid: Enable 64-bit build	2016-01-19 08:39:56 +01:00
head_32.S	x86/microcode: Merge the early microcode loader	2015-10-21 11:22:12 +02:00
head_64.S	x86/cpu: Call verify_cpu() after having entered long mode too	2015-11-07 10:45:02 +01:00
head.c
hpet.c	timers/x86/hpet: Type adjustments	2015-10-21 11:17:32 +02:00
hw_breakpoint.c	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros	2015-12-19 11:49:55 +01:00
i386_ksyms_32.c	preempt: Use preempt_schedule_context() as the official tracing preemption point	2015-06-07 15:57:42 +02:00
i8237.c
i8253.c	clockevents/drivers/i8253: Migrate to new 'set-state' interface	2015-08-10 11:40:30 +02:00
i8259.c	x86/irq: Probe for PIC presence before allocating descs for legacy IRQs	2015-11-07 10:37:37 +01:00
io_delay.c
ioport.c
irq_32.c	genirq: Remove irq argument from irq flow handlers	2015-09-16 15:47:51 +02:00
irq_64.c	x86/irq: Drop unlikely before IS_ERR_OR_NULL	2015-10-01 11:08:56 +02:00
irq_work.c	treewide: Remove old email address	2015-11-23 09:44:58 +01:00
irq.c	x86/irq: Call irq_force_move_complete with irq descriptor	2016-01-15 13:44:01 +01:00
irqinit.c	x86/irq: Store irq descriptor in vector array	2015-08-06 00:14:59 +02:00
jump_label.c	jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}	2015-08-03 11:34:12 +02:00
kdebugfs.c
kexec-bzimage64.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2015-09-08 12:41:25 -07:00
kgdb.c	x86/kgdb: Replace bool_int_array[NR_CPUS] with bitmap	2015-09-28 10:13:31 +02:00
ksysfs.c
kvm.c	The bulk of the changes here is for x86. And for once it's not	2015-06-24 09:36:49 -07:00
kvmclock.c	x86/vdso: Remove pvclock fixmap machinery	2015-12-11 08:56:03 +01:00
ldt.c	x86/ldt: Fix small LDT allocation for Xen	2015-09-14 12:10:50 +02:00
livepatch.c	livepatch: Cleanup module page permission changes	2015-12-04 22:51:07 +01:00
machine_kexec_32.c
machine_kexec_64.c	kexec: move some memembers and definitions within the scope of CONFIG_KEXEC_FILE	2016-01-20 17:09:18 -08:00
Makefile	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
mcount_64.S	x86/ftrace: Add comment on static function tracing	2015-11-19 11:07:49 +01:00
mmconf-fam10h_64.c
module.c	x86/mm/KASLR: Propagate KASLR status to kernel proper	2015-04-03 15:26:15 +02:00
mpparse.c	x86: Cleanup irq_domain ops	2015-04-24 15:36:55 +02:00
msr.c	new helpers: no_seek_end_llseek{,_size}()	2015-12-23 10:41:31 -05:00
nmi_selftest.c
nmi.c	x86/nmi: Save regs in crash dump on external NMI	2015-12-19 11:07:01 +01:00
paravirt_patch_32.c	x86/paravirt: Remove the unused irq_enable_sysexit pv op	2015-11-23 10:48:16 +01:00
paravirt_patch_64.c	x86/entry, x86/paravirt: Remove the unused usergs_sysret32 PV op	2015-11-23 10:48:16 +01:00
paravirt-spinlocks.c	locking/pvqspinlock: Rename QUEUED_SPINLOCK to QUEUED_SPINLOCKS	2015-05-11 09:52:09 +02:00
paravirt.c	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-11 16:26:03 -08:00
pci-calgary_64.c	x86/platform/calgary: Constify cal_chipset_ops structures	2015-11-29 08:50:58 +01:00
pci-dma.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
pci-iommu_table.c
pci-nommu.c
pci-swiotlb.c	x86/mm/64: Enable SWIOTLB if system has SRAT memory regions above MAX_DMA32_PFN	2015-12-06 12:46:31 +01:00
pcspeaker.c
perf_regs.c	perf/x86/64: Report regs_user->ax too in get_regs_user()	2015-04-11 13:08:53 +02:00
pmem.c	libnvdimm, e820: skip module loading when no type-12	2015-11-30 09:10:33 -08:00
probe_roms.c
process_32.c	sched/core, sched/x86: Kill thread_info::saved_preempt_count	2015-10-06 17:08:18 +02:00
process_64.c	x86/LDT: Print the real LDT base address	2015-12-29 12:34:38 +01:00
process.c	x86/vm86: Set thread.vm86 to NULL on fork/clone	2015-10-31 09:50:25 +01:00
ptrace.c	arch/x86/kernel/ptrace.c: Remove unused arg_offs_table	2015-12-29 11:35:34 +01:00
pvclock.c	x86/vdso: Remove pvclock fixmap machinery	2015-12-11 08:56:03 +01:00
quirks.c	timers/x86/hpet: Type adjustments	2015-10-21 11:17:32 +02:00
reboot_fixups_32.c
reboot.c	x86/reboot/quirks: Add iMac10,1 to pci_reboot_dmi_table[]	2016-01-12 12:27:36 +01:00
relocate_kernel_32.S
relocate_kernel_64.S	x86/asm: Replace "MOVQ $imm, %reg" with MOVL	2015-04-01 13:17:39 +02:00
resource.c
rtc.c	x86/paravirt: Prevent rtc_cmos platform device init on PV guests	2015-12-19 21:35:13 +01:00
setup_percpu.c
setup.c	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-11 17:16:01 -08:00
signal_compat.c	x86/compat: Move copy_siginfo_*_user32() to signal_compat.c	2015-07-06 15:28:55 +02:00
signal.c	x86/signal: Fix restart_syscall number for x32 tasks	2015-12-05 18:52:14 +01:00
smp.c	x86/smp: Remove single IPI wrapper	2015-11-05 13:07:54 +01:00
smpboot.c	x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros	2015-12-19 11:49:55 +01:00
stacktrace.c
step.c	Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes	2015-08-18 09:39:47 +02:00
sys_x86_64.c	x86/mm: Improve AMD Bulldozer ASLR workaround	2015-03-31 10:01:17 +02:00
sysfb_efi.c
sysfb_simplefb.c
sysfb.c
tboot.c
tce_64.c
test_nx.c
test_rodata.c
time.c	x86/asm/entry: Change all 'user_mode_vm()' calls to 'user_mode()'	2015-03-23 11:14:17 +01:00
tls.c
tls.h
topology.c	x86: Drop bogus __ref / __refdata annotations	2015-07-20 18:57:20 +02:00
trace_clock.c	x86/asm/tsc: Add rdtsc_ordered() and use it in trivial call sites	2015-07-06 15:23:29 +02:00
tracepoint.c
traps.c	x86/mm: Expand the exception table logic to allow new handling options	2016-02-18 09:21:46 +01:00
tsc_msr.c
tsc_sync.c	x86/asm/tsc/sync: Use rdtsc_ordered() in check_tsc_warp() and drop extra barriers	2015-07-06 15:23:29 +02:00
tsc.c	x86/tsc: Remove unused tsc_pre_init() hook	2015-11-19 11:03:13 +01:00
uprobes.c	uprobes/x86: Make arch_uretprobe_is_alive(RP_CHECK_CALL) more clever	2015-07-31 10:38:06 +02:00
verify_cpu.S	x86/boot: Hide local labels in verify_cpu()	2016-01-12 11:54:32 +01:00
vm86_32.c	thp: rename split_huge_page_pmd() to split_huge_pmd()	2016-01-15 17:56:32 -08:00
vmlinux.lds.S	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
vsmp_64.c	x86: replace __init_or_module with __init in non-modular vsmp_64.c	2015-06-16 14:12:41 -04:00
x86_init.c	x86/tsc: Remove unused tsc_pre_init() hook	2015-11-19 11:03:13 +01:00
x8664_ksyms_64.c	preempt: Use preempt_schedule_context() as the official tracing preemption point	2015-06-07 15:57:42 +02:00