leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b98ac05d5e
linux/arch/powerpc/kernel
History
Benjamin Herrenschmidt b98ac05d5e [POWERPC] 4xx: Deal with 44x virtually tagged icache 
The 44x family has an interesting "feature" which is a virtually
tagged instruction cache (yuck !). So far, we haven't dealt with
it properly, which means we've been mostly lucky or people didn't
report the problems, unless people have been running custom patches
in their distro...

This is an attempt at fixing it properly. I chose to do it by
setting a global flag whenever we change a PTE that was previously
marked executable, and flush the entire instruction cache upon
return to user space when that happens.

This is a bit heavy handed, but it's hard to do more fine grained
flushes as the icbi instruction, on those processor, for some very
strange reasons (since the cache is virtually mapped) still requires
a valid TLB entry for reading in the target address space, which
isn't something I want to deal with.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2007-11-01 07:15:30 -05:00
..
vdso32 powerpc32 vDSO: linker script indentation 2007-10-16 10:01:50 -07:00
vdso64 [POWERPC] Fix 64 bits vDSO DWARF info for CR register 2007-10-17 22:30:09 +10:00
align.c [POWERPC] Handle alignment faults on SPE load/store instructions 2007-09-14 08:51:48 -05:00
asm-offsets.c powerpc: add scaled time accounting 2007-10-18 14:37:28 -07:00
audit.c [PATCH] audit signal recipients 2007-05-11 05:38:25 -04:00
binfmt_elf32.c powerpc: Use linux/elfcore-compat.h 2007-10-17 08:42:51 -07:00
btext.c [POWERPC] Clean out a bunch of duplicate includes 2007-08-17 11:01:51 +10:00
clock.c [POWERPC] clk.h interface for platforms 2007-10-03 09:11:56 +10:00
compat_audit.c [PATCH] add SIGNAL syscall class (v3) 2007-05-11 05:38:25 -04:00
cpu_setup_6xx.S Spelling fix: explicitly 2007-10-19 23:22:55 +02:00
cpu_setup_44x.S [POWERPC] 4xx: 440EPx/GRx incorrect write to DDR SDRAM errata workaround 2007-10-03 07:20:18 -05:00
cpu_setup_pa6t.S [POWERPC] pasemi: Enable one more hid bit 2007-04-24 21:31:49 +10:00
cpu_setup_ppc970.S [POWERPC] powerpc: Enable DEEPNAP power savings mode on 970MP 2006-10-16 16:32:25 +10:00
cputable.c [POWERPC] 4xx: Workaround for the 440EP(x)/GR(x) processors identical PVR issue. 2007-11-01 07:13:43 -05:00
crash_dump.c [POWERPC] FWNMI is only used on pSeries 2007-09-19 15:25:34 +10:00
crash.c [POWERPC] Clean out a bunch of duplicate includes 2007-08-17 11:01:51 +10:00
dma_64.c Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
entry_32.S [POWERPC] 4xx: Deal with 44x virtually tagged icache 2007-11-01 07:15:30 -05:00
entry_64.S [POWERPC] Add 1TB workaround for PA6T 2007-10-17 22:30:09 +10:00
firmware.c
fpu.S [POWERPC] Restore copyright notice in arch/powerpc/kernel/fpu.S 2006-08-30 14:45:35 +10:00
head_8xx.S [POWERPC] 8xx: Work around CPU15 erratum. 2007-10-03 20:36:36 -05:00
head_32.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_40x.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_44x.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
head_64.S [POWERPC] Use 1TB segments 2007-10-12 14:05:17 +10:00
head_booke.h
head_fsl_booke.S [POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers 2007-10-11 13:36:52 -05:00
ibmebus.c Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
idle_6xx.S
idle_power4.S [POWERPC] powermac: Support G5 CPU hotplug 2007-05-07 20:31:13 +10:00
idle.c [POWERPC] Enable tickless idle and high res timers for powerpc 2007-10-03 15:44:34 +10:00
init_task.c [PATCH] nsproxy: move init_nsproxy into kernel/nsproxy.c 2006-10-02 07:57:20 -07:00
io.c [POWERPC] Move inline asm eieio to using eieio inline function 2007-07-10 00:33:14 -05:00
iomap.c [POWERPC] Add 64-bit resources support to pci_iomap 2007-09-20 07:36:52 -05:00
iommu.c Update arch/ to use sg helpers 2007-10-22 21:19:59 +02:00
irq.c Spelling fix: explicitly 2007-10-19 23:22:55 +02:00
isa-bridge.c [POWERPC] Rewrite IO allocation & mapping on powerpc64 2007-06-14 22:29:56 +10:00
kprobes.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
l2cr_6xx.S Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
legacy_serial.c [POWERPC] Add legacy serial support for OPB with flattened device tree 2007-10-12 14:05:18 +10:00
lparcfg.c [POWERPC] ppc64: support CONFIG_DEBUG_PREEMPT 2007-10-03 11:48:44 +10:00
machine_kexec_32.c
machine_kexec_64.c [POWERPC] Rename get_property to of_get_property: arch/powerpc 2007-04-13 03:55:19 +10:00
machine_kexec.c Use extended crashkernel command line on ppc64 2007-10-19 11:53:51 -07:00
Makefile [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
misc_32.S [POWERPC] 4xx: Deal with 44x virtually tagged icache 2007-11-01 07:15:30 -05:00
misc_64.S [POWERPC] kexec: Send slaves to new kernel earlier 2007-06-25 16:55:16 +10:00
misc.S [POWERPC] convert string i/o operations to C 2006-09-20 14:06:18 +10:00
module_32.c [POWERPC] Add support for R_PPC_ADDR16_HI relocations 2007-01-24 21:13:58 +11:00
module_64.c [POWERPC] Generic BUG for powerpc 2006-12-11 16:35:07 +11:00
msi.c [POWERPC] PowerPC MSI infrastructure 2007-05-08 13:40:31 +10:00
nvram_64.c [POWERPC] pseries: Eliminate global error_log_cnt variable 2007-08-17 11:01:52 +10:00
of_device.c [POWERPC] Move of_device allocation into of_device.[ch] 2007-10-17 22:30:07 +10:00
of_platform.c [POWERPC] Move of_device allocation into of_device.[ch] 2007-10-17 22:30:07 +10:00
paca.c [POWERPC] Implement SLB shadow buffer 2006-08-08 17:08:56 +10:00
pci_32.c [POWERPC] null_pci_ops: Use named structure member initializers 2007-08-17 11:01:53 +10:00
pci_64.c [POWERPC] Fix pci domain detection 2007-10-03 11:48:44 +10:00
pci_dn.c [POWERPC] Fix section mismatch in PCI code 2007-09-19 15:25:34 +10:00
pci-common.c [POWERPC] Use alloc_maybe_bootmem() in pcibios_alloc_controller 2007-10-03 15:31:35 +10:00
pmc.c [POWERPC] Fix typo: MMCR0_PMA0 != MMCR0_PMAO 2007-05-22 20:20:56 +10:00
ppc32.h
ppc_ksyms.c [POWERPC] Fix build errors when BLOCK=n 2007-09-22 14:49:22 +10:00
proc_ppc64.c [PATCH] mark struct file_operations const 2 2007-02-12 09:48:44 -08:00
process.c Use helpers to obtain task pid in printks (arch code) 2007-10-19 11:53:43 -07:00
prom_init.c [POWERPC] prom_init whitespace cleanup, typo fix 2007-09-14 01:33:24 +10:00
prom_parse.c Revert "[POWERPC] Don't complain if size-cells == 0 in prom_parse()" 2007-07-26 13:44:36 +10:00
prom.c [POWERPC] 4xx: Workaround for the 440EP(x)/GR(x) processors identical PVR issue. 2007-11-01 07:13:43 -05:00
ptrace32.c [POWERPC] Add CHECK_FULL_REGS in several places in ptrace code 2007-10-03 11:48:43 +10:00
ptrace.c Consolidate PTRACE_DETACH 2007-10-16 09:42:49 -07:00
rtas_flash.c Slab API: remove useless ctor parameter and reorder parameters 2007-10-17 08:42:45 -07:00
rtas_pci.c [POWERPC] rtas_pci_ops: Use named structure member initializers 2007-08-17 11:01:53 +10:00
rtas-proc.c [POWERPC] Fix ppc_rtas_progress_show() 2007-05-17 21:11:15 +10:00
rtas-rtc.c
rtas.c [POWERPC] Remove old interface find_path_device 2007-04-24 22:08:59 +10:00
semaphore.c
setup_32.c [POWERPC] Only call ppc_md.setup_arch() if it is provided 2007-10-11 20:39:36 +10:00
setup_64.c [POWERPC] Quieten cache information at boot 2007-10-17 22:30:09 +10:00
setup-common.c Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
setup.h
signal_32.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal_64.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal.c [POWERPC] Implement logging of unhandled signals 2007-10-12 14:05:18 +10:00
signal.h [POWERPC] Less ifdef's in signal.c/signal.h 2007-06-14 22:29:58 +10:00
smp-tbsync.c [POWERPC] Replace kmalloc+memset with kzalloc 2006-12-04 20:42:09 +11:00
smp.c Convert cpu_sibling_map to be a per cpu variable 2007-10-16 09:42:50 -07:00
softemu8xx.c [POWERPC] 8xx: Move softemu8xx.c from arch/ppc 2007-10-04 11:02:54 -05:00
suspend.c [PATCH] x86: Move swsusp __pa() dependent code to arch portion 2007-05-02 19:27:07 +02:00
swsusp_32.S [PATCH] Change the name of pagedir_nosave 2006-09-26 08:49:01 -07:00
swsusp_64.c [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp_asm64.S [POWERPC] powermac: Suspend to disk on G5 2007-05-07 20:31:14 +10:00
swsusp.c powerpc: fixup hard_irq_disable semantics 2007-05-11 08:29:34 -07:00
sys_ppc32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
syscalls.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
sysfs.c [POWERPC] Remove warning in arch/powerpc/kernel/sysfs.c 2007-09-14 01:33:22 +10:00
systbl.S [POWERPC] Align the sys_call_table 2007-10-11 14:36:47 +10:00
tau_6xx.c
time.c powerpc: add scaled time accounting 2007-10-18 14:37:28 -07:00
traps.c Use helpers to obtain task pid in printks (arch code) 2007-10-19 11:53:43 -07:00
udbg_16550.c [POWERPC] 4xx: Implement udbg_getc() for 440 2007-09-19 21:13:17 -05:00
udbg.c [POWERPC] Add early debug console for CPM serial ports. 2007-10-03 20:35:43 -05:00
vdso.c [POWERPC] Disable vDSO support for ARCH=ppc where it's not implemented 2007-10-11 20:25:25 +10:00
vecemu.c
vector.S
vio.c Driver core: change add_uevent_var to use a struct 2007-10-12 14:51:01 -07:00
vmlinux.lds.S [POWERPC] Fix modpost warnings from head*.S on ppc32 2007-09-14 08:53:36 -05:00