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linux/include/asm-ia64
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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 fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
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 [IA64] arbitary speed tty ioctl support 2007-07-13 16:04:12 -07:00
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 kdump/kexec: calculate note size at compile time 2007-05-08 11:15:07 -07:00
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 local_t: ia64 extension 2007-05-08 11:15:20 -07:00
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 [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction 2007-05-02 19:27:14 +02:00
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 [IA64] Un-break ia64 build 2007-07-12 16:04:39 -07:00
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 Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
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 [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
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 [IA64] arbitary speed tty ioctl support 2007-07-13 16:04:12 -07:00
termios.h [IA64] arbitary speed tty ioctl support 2007-07-13 16:04:12 -07:00
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 arch: personality independent stack top 2007-07-19 10:04:45 -07:00
vga.h
xor.h