David S. Miller d8ed1d43e1 sparc64: Validate linear D-TLB misses. ... When page alloc debugging is not enabled, we essentially accept any virtual address for linear kernel TLB misses. But with kgdb, kernel address probing, and other facilities we can try to access arbitrary crap. So, make sure the address we miss on will translate to physical memory that actually exists. In order to make this work we have to embed the valid address bitmap into the kernel image. And in order to make that less expensive we make an adjustment, in that the max physical memory address is decreased to "1 << 41", even on the chips that support a 42-bit physical address space. We can do this because bit 41 indicates "I/O space" and thus covers non-memory ranges. The result of this is that: 1) kpte_linear_bitmap shrinks from 2K to 1K in size 2) we need 64K more for the valid address bitmap We can't let the valid address bitmap be dynamically allocated once we start using it to validate TLB misses, otherwise we have crazy issues to deal with wrt. recursive TLB misses and such. If we're in a TLB miss it could be the deepest trap level that's legal inside of the cpu. So if we TLB miss referencing the bitmap, the cpu will be out of trap levels and enter RED state. To guard against out-of-range accesses to the bitmap, we have to check to make sure no bits in the physical address above bit 40 are set. We could export and use last_valid_pfn for this check, but that's just an unnecessary extra memory reference. On the plus side of all this, since we load all of these translations into the special 4MB mapping TSB, and we check the TSB first for TLB misses, there should be absolutely no real cost for these new checks in the TLB miss path. Reported-by: heyongli@gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>		2009-08-25 16:47:46 -07:00
..
.gitignore	sparc: gitignore a few files	2008-12-04 09:17:15 -08:00
apc.c	sparc: correct section of apc_no_idle	2008-10-22 21:53:43 -07:00
asm-offsets.c	sparc,sparc64: unify asm-offsets.c	2008-12-04 09:17:12 -08:00
audit.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
auxio_32.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
auxio_64.c	sparc64: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:20 -08:00
central.c	sparc64: Initialize FHC/CLOCK LED platform_device 'id' field correctly.	2009-01-19 13:27:15 -08:00
cherrs.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
chmc.c	sparc64: Fix crashes in jbusmc_print_dimm()	2009-02-11 00:54:07 -08:00
compat_audit.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
cpu.c	sparc: Probe PMU type and record in sparc_pmu_type.	2009-01-28 17:27:14 -08:00
cpumap.c	sparc64: fix and optimize irq distribution	2009-06-16 04:56:28 -07:00
cpumap.h	sparc64: fix and optimize irq distribution	2009-06-16 04:56:28 -07:00
devices.c	sparc: drop CONFIG_SUN_AUXIO	2008-12-04 13:26:31 -08:00
dma.c	sparc: remove dma-mapping_{32|64}.h	2009-06-16 04:56:47 -07:00
dma.h	sparc32: Implement more generic dma_*() interfaces.	2008-08-29 02:13:14 -07:00
ds.c	sparc64: Defer cpu_data() setup until end of per-cpu data initialization.	2009-06-16 04:56:22 -07:00
dtlb_miss.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
dtlb_prot.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ebus.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
entry.h	sparc: fix sparse warnings in irq_32.c	2008-12-08 01:08:24 -08:00
entry.S	[CVE-2009-0029] Remove __attribute__((weak)) from sys_pipe/sys_pipe2	2009-01-14 14:15:15 +01:00
etrap_32.S	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
etrap_64.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
fpu_traps.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ftrace.c	sparc64: Add proper dynamic ftrace support.	2009-06-16 04:56:53 -07:00
getsetcc.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
head_32.S	sparc: cleanup references to deprecated .text.init* sections.	2009-04-27 19:51:58 -07:00
head_64.S	sparc64: Store per-cpu offset in trap_block[]	2009-06-16 04:56:11 -07:00
helpers.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
hvapi.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
hvcalls.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
hvtramp.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
idprom.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
init_task.c	mm: consolidate init_mm definition	2009-06-16 19:47:28 -07:00
iommu.c	sparc: use dma_map_page instead of dma_map_single	2009-06-16 04:56:45 -07:00
iommu_common.h	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ioport.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
irq.h	sparc32: Kill clear_profile_irq btfixup entry.	2008-09-19 21:17:59 -07:00
irq_32.c	cpumask: remove references to struct irqaction's mask field.	2009-03-30 22:05:14 +10:30
irq_64.c	sparc64: Don't use alloc_bootmem() in init_IRQ() code paths.	2009-06-25 19:00:47 -07:00
itlb_miss.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ivec.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
kernel.h	sparc: Probe PMU type and record in sparc_pmu_type.	2009-01-28 17:27:14 -08:00
kgdb_32.c	sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t	2009-01-02 19:32:59 -08:00
kgdb_64.c	sparc64: Reschedule KGDB capture to a software interrupt.	2009-03-18 23:51:57 -07:00
kprobes.c	trivial: fix then -> than typos in comments and documentation	2009-01-06 11:28:06 +01:00
kstack.h	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ktlb.S	sparc64: Validate linear D-TLB misses.	2009-08-25 16:47:46 -07:00
ldc.c	sparc: remove some pointless conditionals before kfree()	2009-04-15 03:04:56 -07:00
led.c	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
Makefile	sparc: move of_device common code to of_device_common	2009-06-16 04:56:49 -07:00
mdesc.c	sparc64: Defer cpu_data() setup until end of per-cpu data initialization.	2009-06-16 04:56:22 -07:00
misctrap.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
module.c	module: cleanup FIXME comments about trimming exception table entries.	2009-06-12 21:47:05 +09:30
muldiv.c	sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t	2009-01-02 19:32:59 -08:00
nmi.c	sparc64: Fix reset hangs on Niagara systems.	2009-03-29 15:40:33 -07:00
of_device_32.c	sparc: move of_device common code to of_device_common	2009-06-16 04:56:49 -07:00
of_device_64.c	sparc: move of_device common code to of_device_common	2009-06-16 04:56:49 -07:00
of_device_common.c	sparc: move of_device common code to of_device_common	2009-06-16 04:56:49 -07:00
of_device_common.h	sparc: move of_device common code to of_device_common	2009-06-16 04:56:49 -07:00
pci.c	Delete pcibios_select_root	2009-06-17 14:04:42 -07:00
pci_common.c	sparc64: Fix crash with /proc/iomem	2009-03-18 23:53:16 -07:00
pci_fire.c	sparc64: Fix section mismatch warnings in PCI controller drivers.	2009-04-08 03:28:15 -07:00
pci_impl.h	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
pci_msi.c	sparc64: Use unsigned long long for u64.	2009-01-06 13:19:28 -08:00
pci_psycho.c	sparc64: Fix section mismatch warnings in PCI controller drivers.	2009-04-08 03:28:15 -07:00
pci_sabre.c	sparc64: Fix section mismatch warnings in PCI controller drivers.	2009-04-08 03:28:15 -07:00
pci_schizo.c	sparc64: Use unsigned long long for u64.	2009-01-06 13:19:28 -08:00
pci_sun4v.c	sparc: use dma_map_page instead of dma_map_single	2009-06-16 04:56:45 -07:00
pci_sun4v.h	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
pci_sun4v_asm.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
pcic.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
pcr.c	sparc64: Don't hook up pcr_ops on spitfire chips.	2009-02-05 23:59:04 -08:00
pmc.c	sparc: fix trivial style issues in kernel/pmc.c	2008-12-08 01:02:55 -08:00
power.c	sparc64: Fix section mismatch warnings in power driver.	2009-04-08 03:27:52 -07:00
process_32.c	Simplify copy_thread()	2009-04-02 19:04:51 -07:00
process_64.c	Simplify copy_thread()	2009-04-02 19:04:51 -07:00
prom.h	sparc: Call OF and MD cpu scanning explicitly from paging_init()	2009-06-16 04:56:19 -07:00
prom_32.c	sparc: Restore irq_trans_init() call in prom_create_node().	2008-12-07 00:46:33 -08:00
prom_64.c	sparc64: Defer cpu_data() setup until end of per-cpu data initialization.	2009-06-16 04:56:22 -07:00
prom_common.c	sparc: Call OF and MD cpu scanning explicitly from paging_init()	2009-06-16 04:56:19 -07:00
prom_irqtrans.c	sparc64: Use unsigned long long for u64.	2009-01-06 13:19:28 -08:00
psycho_common.c	sparc64: fix warnings in psycho_common after ull conversion	2009-01-08 11:37:19 -08:00
psycho_common.h	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ptrace_32.c	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
ptrace_64.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
reboot.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
rtrap_32.S	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
rtrap_64.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
sbus.c	sparc64: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:20 -08:00
setup_32.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
setup_64.c	sparc: Probe PMU type and record in sparc_pmu_type.	2009-01-28 17:27:14 -08:00
signal32.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
signal_32.c	sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t	2009-01-02 19:32:59 -08:00
signal_64.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
smp_32.c	cpumask: use mm_cpumask() wrapper: sparc	2009-03-16 14:40:39 +10:30
smp_64.c	sparc: replace uses of CPU_MASK_ALL_PTR	2009-06-16 04:56:55 -07:00
sparc_ksyms_32.c	sparc: Eliminate PROMLIB_INTERNAL as it does nothing	2009-01-08 16:59:01 -08:00
sparc_ksyms_64.c	sparc64: Fix UP build failure.	2009-01-13 17:38:24 -08:00
spiterrs.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
sstate.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
stacktrace.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
starfire.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
sun4c_irq.c	sparc: Add missing of_node_put	2008-12-04 09:17:22 -08:00
sun4d_irq.c	cpumask: remove references to struct irqaction's mask field.	2009-03-30 22:05:14 +10:30
sun4d_smp.c	sparc32: Kill trap table freeing code.	2009-08-18 23:44:08 -07:00
sun4m_irq.c	sparc: Add missing of_node_put	2008-12-04 09:17:22 -08:00
sun4m_smp.c	sparc32: Kill trap table freeing code.	2009-08-18 23:44:08 -07:00
sun4v_ivec.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
sun4v_tlb_miss.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
sys32.S	sparc: sys32.S incorrect compat-layer splice() system call	2009-08-18 20:16:55 -07:00
sys_sparc32.c	Separate out common fstatat code into vfs_fstatat	2009-04-20 23:02:51 -04:00
sys_sparc_32.c	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
sys_sparc_64.c	sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx()	2009-01-19 21:11:27 -08:00
syscalls.S	sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx()	2009-01-19 21:11:27 -08:00
sysfs.c	sparc: fix hardirq.h removal fallout	2008-12-26 15:33:07 -08:00
systbls.h	sparc64: Annotate sparc64 specific syscalls with SYSCALL_DEFINEx()	2009-01-19 21:11:27 -08:00
systbls_32.S	sparc: Wire up sys_rt_tgsigqueueinfo().	2009-06-16 04:56:58 -07:00
systbls_64.S	sparc64: Sign extend length arg to truncate syscalls when compat.	2009-07-27 18:10:28 -07:00
tadpole.c	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
tick14.c	sparc32: Delete claim_ticker14().	2008-09-19 21:18:01 -07:00
time_32.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
time_64.c	clocksource: pass clocksource to read() callback	2009-04-21 13:41:47 -07:00
trampoline_32.S	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
trampoline_64.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
traps_32.c	sparc: move EXPORT_SYMBOL to the symbols definition	2009-01-08 16:58:05 -08:00
traps_64.c	sparc64: Use BUILD_BUG_ON() in trap_init().	2009-06-16 04:56:13 -07:00
tsb.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
ttable.S	sparc64: Reschedule KGDB capture to a software interrupt.	2009-03-18 23:51:57 -07:00
una_asm_32.S	sparc: prepare kernel/ for unification	2008-12-04 09:17:20 -08:00
una_asm_64.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
unaligned_32.c	sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t	2009-01-02 19:32:59 -08:00
unaligned_64.c	sparc: Most unaligned_64.c tweaks for branch tracer warnings.	2009-01-08 16:52:36 -08:00
us2e_cpufreq.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
us3_cpufreq.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
utrap.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
vio.c	sparc64: Use unsigned long long for u64.	2009-01-06 13:19:28 -08:00
viohs.c	sparc64: refactor code in viohs.c	2009-01-06 12:46:46 -08:00
visemul.c	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
vmlinux.lds.S	sparc: convert to use __HEAD and HEAD_TEXT macros.	2009-04-26 09:20:39 -07:00
windows.c	sparc: add '32' suffix to reg_window, sigcontext, __siginfo_t	2009-01-02 19:32:59 -08:00
winfixup.S	sparc,sparc64: unify kernel/	2008-12-04 09:17:21 -08:00
wof.S	sparc/kernel/: possible cleanups	2008-07-17 21:37:46 -07:00
wuf.S	sparc/kernel/: possible cleanups	2008-07-17 21:37:46 -07:00