Tony Luck 4dcc29e157 [IA64] Workaround for RSE issue ... Problem: An application violating the architectural rules regarding operation dependencies and having specific Register Stack Engine (RSE) state at the time of the violation, may result in an illegal operation fault and invalid RSE state. Such faults may initiate a cascade of repeated illegal operation faults within OS interruption handlers. The specific behavior is OS dependent. Implication: An application causing an illegal operation fault with specific RSE state may result in a series of illegal operation faults and an eventual OS stack overflow condition. Workaround: OS interruption handlers that switch to kernel backing store implement a check for invalid RSE state to avoid the series of illegal operation faults. The core of the workaround is the RSE_WORKAROUND code sequence inserted into each invocation of the SAVE_MIN_WITH_COVER and SAVE_MIN_WITH_COVER_R19 macros. This sequence includes hard-coded constants that depend on the number of stacked physical registers being 96. The rest of this patch consists of code to disable this workaround should this not be the case (with the presumption that if a future Itanium processor increases the number of registers, it would also remove the need for this patch). Move the start of the RBS up to a mod32 boundary to avoid some corner cases. The dispatch_illegal_op_fault code outgrew the spot it was squatting in when built with this patch and CONFIG_VIRT_CPU_ACCOUNTING=y Move it out to the end of the ivt. Signed-off-by: Tony Luck <tony.luck@intel.com>		2008-05-27 13:24:39 -07:00
..
sn	[IA64] move XP and XPC to drivers/misc/sgi-xp	2008-04-22 15:08:17 -07:00
uv	[IA64] Add header files for SGI UV platform	2008-05-14 14:20:25 -07:00
a.out.h	aout: move STACK_TOP[_MAX] to asm/processor.h	2008-02-08 09:22:29 -08:00
acpi-ext.h
acpi.h	[IA64] Minimize per_cpu reservations.	2008-04-08 13:51:35 -07:00
agp.h	x86: remove flush_agp_mappings()	2008-01-30 13:34:07 +01:00
asmmacro.h
atomic.h	[IA64] Use atomic64_read to read an atomic64_t.	2007-08-13 10:21:04 -07:00
auxvec.h
bitops.h	generic: implement __fls on all 64-bit archs	2008-04-26 19:21:16 +02:00
break.h
bug.h
bugs.h
byteorder.h
cache.h
cacheflush.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
checksum.h
compat.h	asm-*/compat.h: fix typo in comment	2008-02-03 16:32:51 +02:00
cpu.h	[IA64] fix section mismatch in arch/ia64/kernel/topology.c	2008-04-30 14:08:07 -07:00
cputime.h	[IA64] VIRT_CPU_ACCOUNTING (accurate cpu time accounting)	2008-02-20 12:55:37 -08:00
current.h
cyclone.h
delay.h
device.h
div64.h
dma-mapping.h	dma/ia64: update ia64 machvecs, swiotlb.c	2008-04-29 08:06:12 -07:00
dma.h
dmi.h	dmi: clean-up dmi helper declarations	2008-05-01 08:04:01 -07:00
elf.h	[IA64] use CORE_DUMP_USE_REGSET	2008-03-12 16:27:35 -07:00
emergency-restart.h
errno.h
esi.h
fb.h
fcntl.h
fpswa.h
fpu.h
futex.h	asm-*/futex.h should include linux/uaccess.h	2008-04-30 08:29:52 -07:00
gcc_intrin.h	KVM: ia64: Prepare some structure and routines for kvm use	2008-04-27 12:01:01 +03:00
hardirq.h
hpsim.h	[IA64] Cleanup HPSIM code (was: Re: Enable early console for Ski simulator)	2007-09-01 02:52:25 -07:00
hugetlb.h	hugetlbfs: common code update for s390	2008-04-28 08:58:25 -07:00
hw_irq.h	[IA64] Fix irq migration in multiple vector domain	2008-03-04 14:16:20 -08:00
ia32.h	[IA64] rename partial_page	2007-07-25 12:56:39 -07:00
ia64regs.h
ide.h	ide: remove ide_init_default_irq() macro	2008-04-18 00:46:35 +02:00
intel_intrin.h	IA64: Slim down __clear_bit_unlock	2007-12-18 16:22:46 -08:00
intrinsics.h	Add cmpxchg_local, cmpxchg64 and cmpxchg64_local to ia64	2008-02-07 08:42:32 -08:00
io.h	dmi: clean-up dmi helper declarations	2008-05-01 08:04:01 -07:00
ioctl.h
ioctls.h
iosapic.h	[IA64] iosapic cleanup	2007-12-07 16:11:12 -08:00
ipcbuf.h
irq_regs.h
irq.h	take declarations of enable_irq() et.al. to linux/interrupt.h	2007-07-22 11:44:00 -07:00
Kbuild	[IA64] move gcc_intrin.h from header-y to unifdef-y	2008-03-04 14:27:49 -08:00
kdebug.h	x86: optimize page faults like all other achitectures and kill notifier cruft	2007-10-16 09:42:50 -07:00
kexec.h
kmap_types.h
kprobes.h	[IA64] kprobes: kprobe-booster for ia64	2008-04-09 10:36:43 -07:00
kregs.h	[IA64] Add API for allocating Dynamic TR resource.	2008-04-03 11:02:58 -07:00
kvm_host.h	KVM: Rename VCPU_MP_STATE_* to KVM_MP_STATE_*	2008-04-27 12:04:13 +03:00
kvm_para.h	KVM: ia64: Add header files for kvm/ia64	2008-04-27 12:01:02 +03:00
kvm.h	KVM: ia64: Set KVM_IOAPIC_NUM_PINS to 48	2008-05-18 14:34:16 +03:00
libata-portmap.h
linkage.h
local.h
machvec_dig.h
machvec_hpsim.h
machvec_hpzx1_swiotlb.h	dma/ia64: update ia64 machvecs, swiotlb.c	2008-04-29 08:06:12 -07:00
machvec_hpzx1.h	dma/ia64: update ia64 machvecs, swiotlb.c	2008-04-29 08:06:12 -07:00
machvec_init.h	[IA64] SN2 needs platform specific irq_to_vector() function.	2007-08-13 10:31:26 -07:00
machvec_sn2.h	dma/ia64: update ia64 machvecs, swiotlb.c	2008-04-29 08:06:12 -07:00
machvec_uv.h	[IA64] machvec support for SGI UV platform	2008-05-14 14:22:04 -07:00
machvec.h	[IA64] machvec support for SGI UV platform	2008-05-14 14:22:04 -07:00
mc146818rtc.h
mca_asm.h	[IA64] mca style cleanup	2008-02-04 15:42:06 -08:00
mca.h	[IA64] simplify notify hooks in mca.c	2008-04-22 08:56:38 -07:00
meminit.h	[IA64] Fix NUMA configuration issue	2008-04-11 15:21:35 -07:00
mman.h
mmu_context.h
mmu.h
mmzone.h
module.h
msgbuf.h
mutex.h
namei.h
nodedata.h
numa.h	[IA64] Minimize per_cpu reservations.	2008-04-08 13:51:35 -07:00
page.h	hugetlbfs: architecture header cleanup	2008-04-28 08:58:25 -07:00
pal.h	[IA64] Itanium Spec updates	2008-04-09 13:05:54 -07:00
param.h	[IA64] Fix build for sim_defconfig	2008-02-11 13:23:46 -08:00
parport.h
patch.h	[IA64] Workaround for RSE issue	2008-05-27 13:24:39 -07:00
pci.h
percpu.h	ia64: on UP percpu variables are not small memory model	2008-01-30 23:27:58 +01:00
perfmon_default_smpl.h
perfmon.h
pgalloc.h	CONFIG_HIGHPTE vs. sub-page page tables.	2008-02-08 09:22:42 -08:00
pgtable.h	mm: introduce pte_special pte bit	2008-04-28 08:58:23 -07:00
poll.h
posix_types.h
processor.h	KVM: ia64: Prepare some structure and routines for kvm use	2008-04-27 12:01:01 +03:00
ptrace_offsets.h
ptrace.h	[IA64] Workaround for RSE issue	2008-05-27 13:24:39 -07:00
resource.h
rse.h
rwsem.h	[IA64] Prevent people from directly including <asm/rwsem.h>.	2007-07-20 11:27:11 -07:00
sal.h	[IA64] Kernel parameter for max number of concurrent global TLB purges	2008-04-04 11:06:38 -07:00
scatterlist.h	Add CONFIG_DEBUG_SG sg validation	2007-10-22 21:20:03 +02:00
sections.h	[IA64] Workaround for RSE issue	2008-05-27 13:24:39 -07:00
segment.h
semaphore.h	Generic semaphore implementation	2008-04-17 10:42:34 -04:00
sembuf.h
serial.h
setup.h
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h	[IA64] Implement smp_call_function_mask for ia64	2008-04-03 11:39:43 -07:00
socket.h	[NET]: Introducing socket mark socket option.	2008-01-31 19:27:19 -08:00
sockios.h
sparsemem.h
spinlock_types.h
spinlock.h	remove asm/bitops.h includes	2007-10-19 11:53:41 -07:00
stat.h
statfs.h
string.h
suspend.h
system.h	fix ia64 local_irq_save() et.al.	2008-04-28 10:03:31 -07:00
termbits.h
termios.h
thread_info.h	[IA64] TS_RESTORE_SIGMASK	2008-05-01 14:29:44 -07:00
timex.h
tlb.h	[IA64] Add API for allocating Dynamic TR resource.	2008-04-03 11:02:58 -07:00
tlbflush.h	[IA64] Multiple outstanding ptc.g instruction support	2008-04-04 11:05:59 -07:00
topology.h	[IA64] Provide ACPI fixup for /proc/cpuinfo/physical_id	2008-04-29 15:05:29 -07:00
types.h	ia64: types: use <asm-generic/int-*.h> for the ia64 architecture	2008-05-02 16:18:21 -07:00
uaccess.h
ucontext.h
unaligned.h	kernel: Move arches to use common unaligned access	2008-04-29 08:06:27 -07:00
uncached.h	[IA64] allocate multiple contiguous pages via uncached allocator	2008-04-29 13:49:01 -07:00
unistd.h	[IA64] Wire up timerfd_{create,settime,gettime} syscalls	2008-02-08 12:00:32 -08:00
unwind.h
user.h	Sanitize the type of struct user.u_ar0	2008-02-07 08:42:30 -08:00
ustack.h
vga.h
xor.h