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2006-02-07[PATCH] powerpc: hypervisor check in pseries_kexec_cpu_downMichael Neuling
We call unregister_vpa but we don't check to see if the hypervisor supports this. Signed-off-by: Michael Neuling <mikey@neuling.org> Acked-by: Anton Blanchard <anton@samba.org> -- arch/powerpc/platforms/pseries/setup.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Don't use toc in decrementer_iSeries_maskedMichael Ellerman
Since 404849bbd2bfd62e05b36f4753f6e1af6050a824 we've been using LOAD_REG_ADDRBASE, which uses the toc pointer, in decrementer_iSeries_masked. This can explode if we take the decrementer interrupt while we're in a module, because the toc pointer in r2 will be the module's toc pointer. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Cleanup, consolidating icache dirtying logicDavid Gibson
The code to mark a page as icache dirty (so that it will later be icache-dcache flushed when we try to execute from it) is duplicated in three places: flush_dcache_page() does this marking and nothing else, but clear_user_page() and copy_user_page() duplicate it, since those functions make the page icache dirty themselves. This patch makes those other functions call flush_dcache_page() instead, so the logic's all in one place. This will make life less confusing if we ever need to tweak the details of the the lazy icache flush mechanism. arch/powerpc/mm/mem.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] Don't check pointer for NULL before passing it to kfree ↵Jesper Juhl
[arch/powerpc/kernel/rtas_flash.c] Checking a pointer for NULL before passing it to kfree is pointless, kfree does its own NULL checking of input. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: fix compile warning in udbg_init_maple_realmodeOlaf Hering
arch/powerpc/kernel/udbg_16550.c: In function `udbg_init_maple_realmode': arch/powerpc/kernel/udbg_16550.c:162: warning: assignment from incompatible pointer type Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: add refcounting to setup_peg2 and of_get_pci_addressOlaf Hering
setup_peg2 must do some refcounting. of_get_pci_address may need to drop the node Pegasos l2cr : L2 cache was not active, activating PCI bus 0 controlled by pci at 80000000 Badness in kref_get at /home/olaf/kernel/olh/ppc64/linux-2.6.16-rc2-olh/lib/kref.c:32 Call Trace: [C037BD00] [C0007934] show_stack+0x5c/0x184 (unreliable) [C037BD30] [C000E068] program_check_exception+0x184/0x584 [C037BD90] [C000F5F0] ret_from_except_full+0x0/0x4c --- Exception: 700 at kref_get+0xc/0x24 LR = of_node_get+0x24/0x3c [C037BE50] [C004FD94] __pte_alloc_kernel+0x64/0x80 (unreliable) [C037BE70] [C000CA18] of_get_parent+0x34/0x58 [C037BE90] [C0009B18] of_get_address+0x24/0x174 [C037BED0] [C000A108] of_address_to_resource+0x24/0x68 [C037BF00] [C038B128] chrp_find_bridges+0x114/0x470 [C037BF90] [C038AE48] chrp_setup_arch+0x1fc/0x32c [C037BFB0] [C03849B0] setup_arch+0x144/0x188 [C037BFD0] [C037C45C] start_kernel+0x34/0x1a8 [C037BFF0] [000037A0] 0x37a0 Badness in kref_get at /home/olaf/kernel/olh/ppc64/linux-2.6.16-rc2-olh/lib/kref.c:32 Call Trace: [C037BC90] [C0007934] show_stack+0x5c/0x184 (unreliable) [C037BCC0] [C000E068] program_check_exception+0x184/0x584 [C037BD20] [C000F5F0] ret_from_except_full+0x0/0x4c --- Exception: 700 at kref_get+0xc/0x24 LR = of_node_get+0x24/0x3c [C037BDE0] [00000000] 0x0 (unreliable) [C037BE00] [C000CA18] of_get_parent+0x34/0x58 [C037BE20] [C0009CE8] of_translate_address+0x2c/0x2fc [C037BEA0] [C0009FE8] __of_address_to_resource+0x30/0xc4 [C037BED0] [C000A130] of_address_to_resource+0x4c/0x68 [C037BF00] [C038B128] chrp_find_bridges+0x114/0x470 [C037BF90] [C038AE48] chrp_setup_arch+0x1fc/0x32c [C037BFB0] [C03849B0] setup_arch+0x144/0x188 [C037BFD0] [C037C45C] start_kernel+0x34/0x1a8 [C037BFF0] [000037A0] 0x37a0 PCI bus 0 controlled by pci at c0000000 Top of RAM: 0x10000000, Total RAM: 0x10000000 Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: remove pointer/integer confusion in of_find_node_by_nameOlaf Hering
remove pointer/integer confusion Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: restore clock speed in /proc/cpuinfoOlaf Hering
Use generic_calibrate_decr to restore missing clock: speed in /proc/cpuinfo Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: remove pointer/integer confusion in generic_calibrate_decrOlaf Hering
remove pointer/integer confusion Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Don't overwrite flat device tree with kdump kernelMichael Ellerman
It's possible for prom_init to allocate the flat device tree inside the kdump crash kernel region. If this happens, when we load the kdump kernel we overwrite the flattened device tree, which is bad. We could make prom_init try and avoid allocating inside the crash kernel region, but then we run into issues if the crash kernel region uses all the space inside the RMO. The easiest solution is to move the flat device tree once we're running in the kernel. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: remove useless call to touch_softlockup_watchdogDave C Boutcher
It turns out that we can't stop the watchdog from triggering here. If we touch the timer (which just uses the current jiffie value) before we enable interrupts, it does nothing because jiffies are not mass-updated until after we enable interrupts. If we touch the timer after we enable interrupts, its too late because the softlockup watchdog will already have triggered. The touch_softlockup_watchdog call removed below does nothing. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: prod all processors after ibm,suspend-meDave C Boutcher
We need to prod everyone here since this is the only CPU that is guaranteed to be running after the ibm,suspend-me RTAS call returns. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: return correct rtas status from ibm,suspend-meDave C Boutcher
Correctly return the status from the RTAS call. rtas_call expects to return the status as a return value. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Fix !SMP build of rtas.cMichael Ellerman
arch/powerpc/kernel/rtas.c is getting hvcall.h via spinlock.h, but when we're building for UP we don't include spinlock.h. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: IOMMU SG paranoiaJake Moilanen
This addresses two items, which are unlikely to be hit if we trust drivers. The first is moving a memory barrier below where the vmerged SG count is passed back, but before the list is set to end. If those instructions were reordered, there could be an issue in iommu_unmap_sg(). The second is making sure we terminate the list on the failure case of iommu_map_sg(). If a driver does not look at the failure return code, it could pass a ill-formed SG list to iommu_unmap_sg(). Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Refuse to boot a kdump kernel via OFMichael Ellerman
You can't boot a kdump kernel via OF, not reliably anyway, the kernel being at 32 MB conflicts with the zImage wrapper etc. and it blows up. It's trivial to check in prom_init though, and this is early enough that we can actually drop back to OF where a reset-all will get you going again, which is kinda nice. I think this should go in for 2.6.16. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Make sure we don't create empty lmb regionsMichael Ellerman
To prevent problems later in boot, make sure we don't create zero-size lmb regions. I've checked all the callers, and at the moment no one should ever hit this. All callers use a constant size, or they check the computed size before they call us. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Don't allocate zero bytes in finish_device_tree()Michael Ellerman
In prom.c we run finish_node() on allnodes twice. The first time we just calculate how much memory we'll need, the second time we do the actual work. If the calculation stage determines that we need 0 bytes, then we should skip the lmb allocation. Although an alloc of zero will work, it has been seen to lead to a BUG_ON() in reserve_bootmem() on at least one machine. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07[PATCH] powerpc: Fix spufs initialization sequence.Geoff Levand
This is a small fix to get the spufs init sequence right. init_spu_base() in spu_base.c should be called (via module_init(init_spu_base)) before spufs_init() (via module_init(spufs_init)) in spufs/inode.c gets called. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-07powerpc/64: Fix bug in setting floating-point exception modePaul Mackerras
When loading up the FPU, we were using a 'ld' (load doubleword) instruction to get the FP exception mode from the thread_struct, but it's only an int field. This changes the ld to lwz (load word and zero-extend). Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-02-01[PATCH] PowerPC/PCI Hotplug build breakLinas Vepstas
Build break: Building PCI hotplug on PowerPC results in a build break, due to failure to export symbols. Reported today by Dave Jones <davej@redhat.com>: drivers/pci/hotplug/rpaphp.ko needs unknown symbol pcibios_add_pci_devices This patch fixes the break in the arch/powerpc tree. Next patch fixes same problem in drivers/pci tree Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01[PATCH] powerpc: Fix sigmask handling in sys_sigsuspend.Heiko Carstens
Better save the sigmask instead of throwing it away so it can be restored. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01[PATCH] powerpc: enable irq's for platform functions.Ben Collins
Make the platform function interrupt functions actually work. Calls irq_enable() for the first in the list, and irq_disable() for the last. Added *func to struct irq_client so the the user can pass just that to pmf_unregister_irq_client(). Signed-off-by: Ben Collins <bcollins@ubuntu.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-01[PATCH] CONFIG_ISA does not make sense for CONFIG_PPC_PSERIESOlaf Hering
Older pSeries systems with serial ports dont get any console output after recent changes. CONFIG_ISA does not make sense for CONFIG_PPC_PSERIES because it enables lots of old drivers. Instead, remove the dependency on CONFIG_ISA from the serial port discovery code. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-31[SUNGEM]: Unbreak Sun GEM chips.David S. Miller
Revert: 40727198bfb2ce5842a6e8c7f89cf8a40ff7bf14 These PHY changes hang the sungem driver on startup with Sun chips on sparc64. Hopefully we can redo these changes in a way that doesn't break non-Apple systems. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-23[SUNGEM]: Make PM of PHYs more reliable (#2)Benjamin Herrenschmidt
On my latest laptop, I've had occasional PHY dead on wakeup from sleep... the PHY would be totally unresponsive even to toggling the hard reset line until the machine is powered down... Looking closely at the code, I found some possible issues in the way we setup the MDIO lines during suspend along with slight divergences from what Darwin does when resetting it that may explain the problem. That patch change these and the problem appear to be gone for me at least... I also fixed an mdelay -> msleep while I was at it to the pmac feature code that is called when toggling the PHY reset line since sungem doesn't call it in an atomic context anymore. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>b Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-18[PATCH] TIF_RESTORE_SIGMASK support for arch/powerpcDavid Woodhouse
Implement the TIF_RESTORE_SIGMASK flag in the new arch/powerpc kernel, for both 32-bit and 64-bit system call paths. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-18[PATCH] Generic sys_rt_sigsuspend()David Woodhouse
The TIF_RESTORE_SIGMASK flag allows us to have a generic implementation of sys_rt_sigsuspend() instead of duplicating it for each architecture. This provides such an implementation and makes arch/powerpc use it. It also tidies up the ppc32 sys_sigsuspend() to use TIF_RESTORE_SIGMASK. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-18[PATCH] e1000: Added disable packet split capabilityJesse Brandeburg
Adds the ability to disability packet split at compile time and use the legacy receive path on PCI express hardware. Made this a CONFIG option and modified the Kconfig, to reflect the new option. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: John Ronciak <john.ronciak@intel.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-15powerpc/32: Restore previous version of 32-bit PCI codePaul Mackerras
When I removed the powermac support from arch/ppc/kernel/pci.c, I overlooked the fact that that file is used in 32-bit ARCH=powerpc builds. To prevent problems in future, restore the original version of that file as arch/powerpc/kernel/pci_32.c, and use that. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-15[PATCH] powerpc: Kconfig changes for CRASH_DUMPHaren Myneni
Noticed in 2.6.15-git9 that CRASH_DUMP option is moved to top level. Moved CRASH_DUMP into "kernel options" next to KEXEC and this config option supports only for PPC64 at this time. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-15[PATCH] powerpc: Update pmac32_defconfigBenjamin Herrenschmidt
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-15[PATCH] powerpc: Fix Maple buildBenjamin Herrenschmidt
The changes to the device node structure broke Maple build. This fixes it. Unfortunately I coudn't test as my Maple board appears to be dead. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-15[PATCH] powerpc: Fix kdump copy regs and dynamic allocate per-cpu crash notesHaren Myneni
- This contains the arch specific changes for the following the kdump generic fixes which were already accepted in the upstream. . Capturing CPU registers (for the case of 'panic' and invoking the dump using 'sysrq-trigger') from a function (stack frame) which will be not be available during the kdump boot. Hence, might result in invalid stack trace. . Dynamically allocating per cpu ELF notes section instead of statically for NR_CPUS. - Fix the compiler warning in prom_init.c. Signed-off-by: Haren Myneni <haren@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-15powerpc/32: Generate miboot images with ARCH=powerpcPaul Mackerras
Miboot images are apparently still used on some old 32-bit powermacs, so build them with ARCH=powerpc if we're 32-bit and powermac support is enabled. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
2006-01-14[PATCH] powerpc: Recognize /chaos bridge on old pmacs as PCIPaul Mackerras
The first generation of PCI powermacs had a host bridge called /chaos which was for all intents and purposes a PCI host bridge, but has a device_type of "vci" in the device tree (presumably it's not really PCI at the hardware level or something). The OF parsing stuff in arch/powerpc/kernel/prom_parse.c currently doesn't recognize it as a PCI bridge, which means that controlfb.c can't get its device addresses. This makes prom_parse.c recognize a device_type of "vci" as indicating a PCI host bridge. With this, controlfb works again. Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14powerpc: Avoid unaligned loads and stores in boot memcpy codePaul Mackerras
The 601 processor will generate an alignment exception for accesses which cross a page boundary. In the boot wrapper code, OF is still handling all exceptions, and it doesn't have an alignment exception handler that emulates the instruction and continues. This changes the memcpy and memmove routines in the boot wrapper to avoid doing unaligned accesses. If the source and destination are misaligned with respect to each other, we just copy one byte at a time. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14powerpc: Make COFF zImages for old 32-bit powermacsPaul Mackerras
This adds code to build zImage.coff and/or zImage.initrd.coff when CONFIG_PPC32 and CONFIG_PPC_PMAC are defined. It also restructures the OF client code and adds some workarounds for OF quirks on the older machines. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: Make CHRP build againDavid Woodhouse
This makes CHRP build again, although it's untested because my Pegasos is currently in pieces. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: special-case ibm,suspend-me RTAS callDave C Boutcher
Handle the ibm,suspend-me RTAS call specially. It needs to be wrapped in a set of synchronization hypervisor calls (H_Join). When the H_Join calls are made on all CPUs, the intent is that only one will return with H_Continue, meaning that he is the "last man standing". That CPU then issues the ibm,suspend-me call. What is interesting, of course, is that the CPU running when the rtas syscall is made, may NOT be the CPU that ultimately executes the ibm,suspend-me rtas call. Signed-off-by: Dave Boutcher <sleddog@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: Add MPC834x SYS board to arch/powerpcKumar Gala
Add the first MPC83xx board that uses a flat device tree to arch/powerpc. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: Add FSL SOC library and setup codeKumar Gala
Parse the flat device tree for devices on Freescale SOC's that we know about (gianfar, gianfar_mdio, i2c, mpc83xx_wdt). We need to setup platform devices and platform data for these devices to match arch/ppc usage. Also add a helper function (get_immrbase) that reports the base address of the MMIO registers on the SOC. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: Allow for ppc_md restart, power_off, and halt to be NULLKumar Gala
On a number of embedded reference boards there isn't always a way to reset, power_off, or halt the board. Rather than having each board implement a spin loop just let the generic code do it. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14[PATCH] powerpc: oprofile cpu type names clash with other codeAndy Whitcroft
In 2.6.15-git6 a change was commited in the oprofile support in the powerpc architecture. It introduced the powerpc_oprofile_type which contains the define G4. This causes a name clash with the existing wacom usb tablet driver. CC [M] drivers/usb/input/wacom.o drivers/usb/input/wacom.c:98: error: conflicting types for `G4' include/asm/cputable.h:37: error: previous declaration of `G4' CC [M] drivers/usb/mon/mon_text.o make[3]: *** [drivers/usb/input/wacom.o] Error 1 make[2]: *** [drivers/usb/input] Error 2 The elements of an enum declared in global scope are effectivly global identifiers themselves. As such we need to ensure the names are unique. This patch updates the later oprofile support to use unique names. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-14powerpc: Provide a suitable AT_PLATFORM valuePaul Mackerras
The glibc folks want to use AT_PLATFORM to select between possible alternative versions of shared libraries. This commit makes the kernel supply an AT_PLATFORM string that indicates what class of processor we are running on. Processors with the same set of user-level instructions and roughly the same instruction scheduling characteristics are given the same AT_PLATFORM value; for example, 821, 823 and 860 are all reported as "ppc823", and 7447, 7447A, 7448, 7450, 7451, 7455 are all called "ppc7450". The intention is that the AT_PLATFORM values match the values that gcc accepts for the -mcpu= option. For values which are numeric (e.g. -mcpu=750), "ppc" has been prepended. This also adds a PPC_FEATURE_BOOKE bit to the AT_HWCAP value and sets it for the 440 family and the Freescale 85xx family. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-13[PATCH] Add vio_bus_type probe and remove methodsRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-13[PATCH] Add of_platform_bus_type probe and remove methodsRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-13[PATCH] powerpc: Remove lppaca structure from the PACADavid Gibson
At present the lppaca - the structure shared with the iSeries hypervisor and phyp - is contained within the PACA, our own low-level per-cpu structure. This doesn't have to be so, the patch below removes it, making a separate array of lppaca structures. This saves approximately 500*NR_CPUS bytes of image size and kernel memory, because we don't need aligning gap between the Linux and hypervisor portions of every PACA. On the other hand it means an extra level of dereference in many accesses to the lppaca. The patch also gets rid of several places where we assign the paca address to a local variable for no particular reason. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-01-13[PATCH] powerpc: Cleanup LOADADDR etc. asm macrosDavid Gibson
This patch consolidates the variety of macros used for loading 32 or 64-bit constants in assembler (LOADADDR, LOADBASE, SET_REG_TO_*). The idea is to make the set of macros consistent across 32 and 64 bit and to make it more obvious which is the appropriate one to use in a given situation. The new macros and their semantics are described in the comments in ppc_asm.h. In the process, we change several places that were unnecessarily using immediate loads on ppc64 to use the GOT/TOC. Likewise we cleanup a couple of places where we were clumsily subtracting PAGE_OFFSET with asm instructions to use assemble-time arithmetic or the toreal() macro instead. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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