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507b06d062
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 [IA64] update HP CSR space discovery via ACPI 2006-04-06 14:42:38 -07:00
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 [IA64] remove per-cpu ia64_phys_stacked_size_p8 2007-02-06 15:04:18 -08:00
atomic.h [IA64] Use atomic64_read to read an atomic64_t. 2007-08-13 10:21:04 -07:00
auxvec.h [PATCH] auxiliary vector cleanups 2005-09-07 16:57:21 -07:00
bitops.h generic: implement __fls on all 64-bit archs 2008-04-26 19:21:16 +02:00
break.h [IA64] enable trap code on slot 1 2006-12-12 12:00:55 -08:00
bug.h [PATCH] remove gcc-2 checks 2006-01-08 20:14:02 -08:00
bugs.h
byteorder.h
cache.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
cacheflush.h remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
checksum.h [PATCH] fix prototype of csum_ipv6_magic() (ia64) 2007-01-23 11:09:49 -08:00
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 Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
device.h ACPI: Change ACPI to use dev_archdata instead of firmware_data 2006-12-01 14:52:01 -08:00
div64.h
dma-mapping.h dma/ia64: update ia64 machvecs, swiotlb.c 2008-04-29 08:06:12 -07:00
dma.h [IA64] swiotlb bug fixes 2007-02-05 18:46:40 -08:00
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 [PATCH] Add emergency_restart() 2005-07-26 14:35:41 -07:00
errno.h
esi.h [IA64] remove bogus prototype ia64_esi_init() 2007-02-05 14:14:29 -08:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h [PATCH] Clean up struct flock definitions 2005-09-07 16:57:38 -07:00
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 Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
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 [PATCH] Generic ioctl.h 2006-01-10 08:01:34 -08:00
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: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
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 Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
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 ATA convert GSI to irq on ia64 2007-02-15 18:04:53 -05:00
linkage.h [PATCH] abstract type/size specification for assembly 2006-03-24 07:33:25 -08:00
local.h local_t: ia64 extension 2007-05-08 11:15:20 -07:00
machvec_dig.h [IA64] cleanup dig_irq_init 2006-03-24 13:12:46 -08:00
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 [PATCH] IA64,sparc: local DoS with corrupted ELFs 2006-09-08 08:40:46 -07:00
mmu_context.h [PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction 2007-05-02 19:27:14 +02:00
mmu.h [IA64] Fix race in mm-context wrap-around logic. 2005-08-12 15:05:21 -07:00
mmzone.h [PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM 2005-10-04 13:21:13 -07:00
module.h [PATCH] Move compiler check for modules to ia64 only 2006-09-26 10:52:37 +02:00
msgbuf.h
mutex.h [IA64] fix bug in ia64 __mutex_fastpath_trylock 2006-04-07 22:39:49 -07:00
namei.h
nodedata.h [PATCH] pgdat allocation and update for ia64 of memory hotplug: update pgdat address array 2006-06-27 17:32:37 -07:00
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 [IA64] alternate perfmon handler 2005-05-18 16:14:30 -07:00
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 [PATCH] FD_ZERO build fix 2007-01-11 18:18:22 -08:00
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 [IA64] Remove stack hard limit on ia64 2007-03-06 14:48:19 -08:00
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 [PATCH] ia64: 2048-byte command line 2007-02-12 09:48:39 -08:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h [PATCH] irq-flags: IA64: Use the new IRQF_ constants 2006-07-02 13:58:47 -07:00
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 [PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM 2005-10-04 13:21:13 -07:00
spinlock_types.h [PATCH] spinlock consolidation 2005-09-10 10:06:21 -07:00
spinlock.h remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
stat.h
statfs.h
string.h Don't include linux/config.h from anywhere else in include/ 2006-04-26 12:56:16 +01:00
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 [IA64] ia64: simplify and fix udelay() 2006-02-15 13:37:04 -08:00
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 [IA64] don't double >> PAGE_SHIFT pointer for /dev/kmem access 2006-10-26 14:57:06 -07:00
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 [IA64] Remove sparse warning from unwind code 2007-03-08 10:28:48 -08:00
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 [PATCH] vgacon: make VGA_MAP_MEM take size, remove extra use 2006-06-22 15:05:58 -07:00
xor.h