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OpenCloudOS-Kernel/arch/powerpc/kernel
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Anton Blanchard 73d2fb758e powerpc: Emulate non privileged DSCR read and write 
POWER8 allows read and write of the DSCR in userspace. We added
kernel emulation so applications could always use the instructions
regardless of the CPU type.

Unfortunately there are two SPRs for the DSCR and we only added
emulation for the privileged one. Add code to match the non
privileged one.

A simple test was created to verify the fix:

http://ozlabs.org/~anton/junkcode/user_dscr_test.c

Without the patch we get a SIGILL and it passes with the patch.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 		2013-05-06 09:25:35 +10:00
..
vdso32 powerpc: Add VDSO version of time 2013-04-23 16:05:05 +10:00
vdso64 powerpc: Add VDSO version of time 2013-04-23 16:05:05 +10:00
.gitignore
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Makefile powerpc: Add helper functions for transactional memory context switching 2013-02-15 16:58:52 +11:00
align.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
asm-offsets.c Merge tag 'kvm-3.10-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2013-05-05 14:47:31 -07:00
audit.c
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btext.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
cacheinfo.c cpu: convert 'cpu' and 'machinecheck' sysdev_class to a regular subsystem 2011-12-21 14:29:42 -08:00
cacheinfo.h
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clock.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
compat_audit.c
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cpu_setup_6xx.S powerpc: Fix some 6xx/7xxx CPU setup functions 2011-02-07 12:57:11 +11:00
cpu_setup_44x.S powerpc/44x: Add support for the AMCC APM821xx SoC 2010-10-13 08:47:09 -04:00
cpu_setup_a2.S powerpc: Enforce usage of RA 0-R31 where possible 2012-07-10 19:18:35 +10:00
cpu_setup_fsl_booke.S powerpc/85xx: Add AltiVec support for e6500 2013-03-12 15:59:26 -05:00
cpu_setup_pa6t.S
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cpu_setup_power.S powerpc: Turn on the EBB H/FSCR bits 2013-05-02 10:36:55 +10:00
cpu_setup_ppc970.S powerpc, KVM: Split HVMODE_206 cpu feature bit into separate HV and architecture bits 2011-07-12 13:16:58 +03:00
cputable.c Merge remote-tracking branch 'kumar/next' into next 2013-04-30 11:10:09 +10:00
crash.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
crash_dump.c mm/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
dbell.c powerpc: Add accounting for Doorbell interrupts 2013-04-18 15:59:55 +10:00
dma-iommu.c powerpc/dma-iommu: Fix IOMMU window check 2012-08-24 20:26:07 +10:00
dma-swiotlb.c powerpc/swiotlb: Enable at early stage and disable if not necessary 2012-09-12 14:57:09 -05:00
dma.c powerpc/kernel: Remove uses of abs_to_virt() and virt_to_abs() 2012-09-05 15:19:30 +10:00
entry_32.S powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning for ppc32 2013-01-29 10:10:22 +11:00
entry_64.S powerpc: Context switch the new EBB SPRs 2013-05-02 10:37:36 +10:00
epapr_hcalls.S powerpc: Add paravirt idle loop for 64-bit Book-E 2013-03-13 14:19:36 -05:00
epapr_paravirt.c powerpc: define the conditions where the ePAPR idle hcall can be supported 2013-03-26 08:47:27 +11:00
exceptions-64e.S powerpc/85xx: Add AltiVec support for e6500 2013-03-12 15:59:26 -05:00
exceptions-64s.S powerpc: Save DAR and DSISR in pt_regs on MCE 2013-04-30 15:59:42 +10:00
fadump.c mm/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
firmware.c powerpc: fix implicit use of cache.h in kernel/firmware.c 2011-10-31 19:30:41 -04:00
fpu.S powerpc: Add FP/VSX and VMX register load functions for transactional memory 2013-02-15 16:58:52 +11:00
fsl_booke_entry_mapping.S
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ftrace.c powerpc/ftrace: Trace function graph entry before updating index 2012-07-27 11:42:34 +10:00
head_8xx.S powerpc: Call do_page_fault() with interrupts off 2012-03-09 10:55:08 +11:00
head_32.S powerpc: Call do_page_fault() with interrupts off 2012-03-09 10:55:08 +11:00
head_40x.S powerpc: Enable the Watchdog vector for 405 2013-01-10 14:43:46 +11:00
head_44x.S powerpc: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
head_64.S powerpc: Add isync to copy_and_flush 2013-04-26 16:08:17 +10:00
head_booke.h powerpc: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
head_fsl_booke.S powerpc: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
hw_breakpoint.c powerpc: Change hardware breakpoint to allow longer ranges 2013-01-29 11:35:08 +11:00
ibmebus.c powerpc: Remove all includes of <asm/abs_addr.h> 2012-09-05 15:19:33 +10:00
idle.c powerpc: Use generic idle loop 2013-04-08 17:39:27 +02:00
idle_6xx.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
idle_book3e.S powerpc: Add paravirt idle loop for 64-bit Book-E 2013-03-13 14:19:36 -05:00
idle_e500.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
idle_power4.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
idle_power7.S powerpc/powernv: Always go into nap mode when CPU is offline 2012-09-05 16:05:20 +10:00
io-workarounds.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
io.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
iomap.c powerpc: switch to GENERIC_PCI_IOMAP 2011-11-28 21:13:18 +02:00
iommu.c powerpc: Use PTR_RET instead of IS_ERR/PTR_ERR 2013-04-18 13:03:48 +10:00
irq.c powerpc: Add accounting for Doorbell interrupts 2013-04-18 15:59:55 +10:00
isa-bridge.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
jump_label.c powerpc: Fix build breakage in jump_label.c 2011-11-16 14:25:19 +11:00
kgdb.c powerpc/kgdb: Removed kmalloc returned value cast 2013-04-18 13:03:56 +10:00
kprobes.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
kvm.c mm/ppc: use common help functions to free reserved pages 2013-04-29 15:54:30 -07:00
kvm_emul.S KVM: PPC: Not optimizing MSR_CE and MSR_ME with paravirt. 2012-05-30 11:43:11 +02:00
l2cr_6xx.S Fix common misspellings 2011-03-31 11:26:23 -03:00
legacy_serial.c Fix misspellings of "whether" in comments. 2012-11-19 14:31:35 +01:00
lparcfg.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
machine_kexec.c powerpc+of: Rename the drivers/of prom_* functions to of_* 2012-11-15 12:56:52 +11:00
machine_kexec_32.c treewide: convert uses of ATTRIB_NORETURN to __noreturn 2012-01-12 20:13:03 -08:00
machine_kexec_64.c powerpc/kexec: Disable hard IRQ before kexec 2013-02-24 03:49:28 +11:00
misc.S powerpc: switch to generic sys_execve()/kernel_execve() 2012-09-30 23:35:51 -04:00
misc_32.S powerpc: split ret_from_fork 2012-09-30 23:31:19 -04:00
misc_64.S powerpc: split ret_from_fork 2012-09-30 23:31:19 -04:00
module.c powerpc: remove non-required uses of include <linux/module.h> 2011-10-31 19:30:44 -04:00
module_32.c powerpc: Fix kernel panic during kernel module load 2012-06-08 19:59:08 +10:00
module_64.c powerpc: Build kernel with -mcmodel=medium 2013-01-10 17:00:31 +11:00
msi.c
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nvram_64.c powerpc: remove cast for kmalloc/kzalloc return value 2013-04-18 13:03:56 +10:00
of_platform.c powerpc/eeh: Fix crash when adding a device in a slot with DDW 2013-01-10 17:01:58 +11:00
paca.c powerpc: Move boot_paca into early_setup 2013-02-15 16:54:48 +11:00
pci-common.c powerpc: Set default VGA device 2013-04-18 15:59:58 +10:00
pci_32.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pci_64.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pci_dn.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pci_of_scan.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
pmc.c bug.h: add include of it to various implicit C users 2012-02-29 17:15:08 -05:00
ppc32.h powerpc: switch to generic old sigaction() 2013-02-03 18:16:10 -05:00
ppc_ksyms.c Merge remote-tracking branch 'master' into queue 2012-10-29 19:15:32 -02:00
ppc_save_regs.S Fix common misspellings 2011-03-31 11:26:23 -03:00
proc_powerpc.c proc: Supply PDE attribute setting accessor functions 2013-05-01 17:29:18 -04:00
process.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
prom.c Merge branch 'dt' into next 2012-11-15 15:02:44 +11:00
prom_init.c powerpc/pseries: Enable PRRN handling 2013-04-26 16:08:26 +10:00
prom_init_check.sh powerpc: Relocate prom_init.c on 64bit 2013-01-10 17:00:25 +11:00
prom_parse.c powerpc: remove non-required uses of include <linux/module.h> 2011-10-31 19:30:44 -04:00
ptrace.c powerpc/ptrace: Add DAWR debug feature info for userspace 2013-04-18 15:59:55 +10:00
ptrace32.c powerpc: fixing ptrace_get_reg to return an error 2013-04-18 13:03:57 +10:00
reloc_32.S powerpc: Process dynamic relocations for kernel 2011-12-20 10:21:08 -05:00
reloc_64.S
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rtas-proc.c
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rtas-rtc.c powerpc/rtas-rtc: remove sideeffects of printk_ratelimit 2011-06-29 15:30:43 +10:00
rtas.c powerpc+of: Remove the pSeries_reconfig.h file 2012-11-15 12:56:55 +11:00
rtas_flash.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
rtas_pci.c powerpc/kernel: Cleanup on rtas_pci.c 2013-04-18 13:03:48 +10:00
rtasd.c powerpc/pseries: Add /proc interface to control topology updates 2013-04-26 16:08:26 +10:00
setup-common.c powerpc: remove PReP platform 2013-04-18 13:03:53 +10:00
setup.h
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setup_32.c powerpc/watchdog: move booke watchdog param related code to setup-common.c 2012-07-11 07:44:03 -05:00
setup_64.c powerpc: Reduce PTE table memory wastage 2013-04-30 16:00:07 +10:00
signal.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2013-02-23 18:50:11 -08:00
signal.h powerpc: Add new transactional memory state to the signal context 2013-02-15 17:02:23 +11:00
signal_32.c powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
signal_64.c powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
smp-tbsync.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
smp.c powerpc: Use generic idle loop 2013-04-08 17:39:27 +02:00
softemu8xx.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
stacktrace.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
suspend.c
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swsusp.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
swsusp_32.S Fix common misspellings 2011-03-31 11:26:23 -03:00
swsusp_64.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
swsusp_asm64.S
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swsusp_booke.S
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sys_ppc32.c ppc compat wrappers for add_key(2) and request_key(2) are pointless 2013-03-03 23:00:39 -05:00
syscalls.c powerpc: Fix personality handling in ppc64_personality() 2012-08-24 20:26:07 +10:00
sysfs.c numa: convert static memory to dynamically allocated memory for per node device 2012-12-11 17:22:23 -08:00
systbl.S
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systbl_chk.c
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systbl_chk.sh
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tau_6xx.c
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time.c powerpc: Use PTR_RET instead of IS_ERR/PTR_ERR 2013-04-18 13:03:48 +10:00
tm.S powerpc: fix compiling CONFIG_PPC_TRANSACTIONAL_MEM when CONFIG_ALTIVEC=n 2013-04-10 08:14:39 +10:00
traps.c powerpc: Emulate non privileged DSCR read and write 2013-05-06 09:25:35 +10:00
udbg.c early_printk: consolidate random copies of identical code 2013-04-29 18:28:13 -07:00
udbg_16550.c powerpc: Add early debug for WSP platforms 2011-05-06 13:32:41 +10:00
uprobes.c uretprobes/powerpc: Hijack return address 2013-04-13 15:31:56 +02:00
vdso.c powerpc: Add VDSO version of time 2013-04-23 16:05:05 +10:00
vecemu.c
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vector.S powerpc: Add FP/VSX and VMX register load functions for transactional memory 2013-02-15 16:58:52 +11:00
vio.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
vmlinux.lds.S powerpc: Relocate prom_init.c on 64bit 2013-01-10 17:00:25 +11:00