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2006-11-01[POWERPC] Make alignment exception always check exception tableBenjamin Herrenschmidt
The alignment exception used to only check the exception table for -EFAULT, not for other errors. That opens an oops window if we can coerce the kernel into getting an alignment exception for other reasons in what would normally be a user-protected accessor, which can be done via some of the futex ops. This fixes it by always checking the exception tables. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Disallow kprobes on emulate_step and branch_takenGui,Jian
On powerpc, probing on emulate_step function will crash 2.6.18.1 when it is triggered. When kprobe is triggered, emulate_step() is on its kernel path and will cause recursive kprobe fault. And branch_taken() is called in emulate_step(). This disallows kprobes on both of them. Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Make high hugepage areas preempt safeHugh Dickins
Checking source for other get_paca()->field preemption dangers found that open_high_hpage_areas does a structure copy into its paca while preemption is enabled: unsafe however gcc accomplishes it. Just remove that copy: it's done safely afterwards by on_each_cpu, as in open_low_hpage_areas. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] qe_lib: qe_issue_cmd writes wrong value to CECDRTimur Tabi
Changed qe_issue_cmd() to write cmd_input to the CECDR unmodified. It was treating cmd_input as a virtual address and tried to convert it to a physical address. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Use 4kB iommu pages even on 64kB-page systemsLinas Vepstas
The 10Gigabit ethernet device drivers appear to be able to chew up all 256MB of TCE mappings on pSeries systems, as evidenced by numerous error messages: iommu_alloc failed, tbl c0000000010d5c48 vaddr c0000000d875eff0 npages 1 Some experimentation indicates that this is essentially because one 1500 byte ethernet MTU gets mapped as a 64K DMA region when the large 64K pages are enabled. Thus, it doesn't take much to exhaust all of the available DMA mappings for a high-speed card. This patch changes the iommu allocator to work with its own unique, distinct page size. Although the patch is long, its actually quite simple: it just #defines a distinct IOMMU_PAGE_SIZE and then uses this in all the places that matter. As a side effect, it also dramatically improves network performance on platforms with H-calls on iommu translation inserts/removes (since we no longer call it 16 times for a 1500 bytes packet when the iommu HW is still 4k). In the future, we might want to make the IOMMU_PAGE_SIZE a variable in the iommu_table instance, thus allowing support for different HW page sizes in the iommu itself. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Fix oprofile support for e500 in arch/powerpcAndy Fleming
Fixed a compile error in building the 85xx support with oprofile, and in the process cleaned up some issues with the fsl_booke performance monitor code. * Reorganized FSL Book-E performance monitoring code so that the 7450 wouldn't be built if the e500 was, and cleaned it up so it was more self-contained. * Added a cpu_setup function for FSL Book-E. The original cpu_setup function prototype had no arguments, assuming that the reg_setup function would copy the required information into variables which represented the registers. This was silly for e500, since it has 1 register per counter (rather than 3 for all counters), so the code has been restructured to have cpu_setup take the current counter config array as an argument, with op_powerpc_setup() invoking op_powerpc_cpu_setup() through on_each_cpu(), and op_powerpc_cpu_setup() invoking the model-specific cpu_setup function with an argument. The argument is ignored on all other platforms at present. * Fixed a confusing line where a trinary operator only had two arguments Signed-off-by: Andrew Fleming <afleming@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-01[POWERPC] Fix various offb issuesBenjamin Herrenschmidt
This patch fixes a few issues in offb: - A test was inverted causing the palette hack to never work (no device node was passed down to the init function) - Some cards seem to have their assigned-addresses property in a random order, thus we need to try using of_get_pci_address() first, which will fail if it's not a PCI device, and fallback to of_get_address() in that case. of_get_pci_address() properly parsees assigned-addresses to test the BAR number and thus will get it right whatever the order is. - Some cards (like GXT4500) provide a linebytes of 0xffffffff in the device-tree which does no good. This patch handles that by using the screen width when that happens. (Also fixes btext.c while at it). - Add detection of the GXT4500 in addition to the GXT2000 for the palette hacks (we use the same hack, palette is linear in register space at offset 0x6000). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-31Merge branch 'release' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Correct definition of handle_IPI [IA64] move SAL_CACHE_FLUSH check later in boot [IA64] MCA recovery: Montecito support [IA64] cpu-hotplug: Fixing confliction between CPU hot-add and IPI [IA64] don't double >> PAGE_SHIFT pointer for /dev/kmem access
2006-10-31[IA64] Correct definition of handle_IPIKeith Owens
The declaration of handle_IPI in arch/ia64/kernel/smp.c was changed but not the definition of this function. Remove struct pt_regs from handle_IPI(). Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-31[IA64] move SAL_CACHE_FLUSH check later in bootTroy Heber
The check to see if the firmware drops interrupts during a SAL_CACHE_FLUSH is done to early in the boot. SAL_CACHE_FLUSH expects to be able to make PAL calls in virtual mode, on some cell based machines a fault occurs causing a MCA. This patch moves the check after mmu_context_init so the TLB and VHPT are properly setup. Signed-off-by Troy Heber <troy.heber@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-31[IA64] MCA recovery: Montecito supportRuss Anderson
The information in MCA records is filled in slightly differently on Montecito than on Madison/McKinley. Usually, the cache check and bus check target identifiers have the same address. On Montecito the cache check and bus check target identifiers can be different if a corrected error (ie SBE or unconsumed poison data) was encountered and then an uncorrected error (ie DBE) was consumed. In that case, the cache check target identifier is the physical address of the DBE (that caused the MCA to surface) while the bus check target identifier is the physical address of the SBE. This patch correctly finds the target identifier that triggered the MCA. If there are multiple valid cache target identifiers in the same error record then use the one with the lowest cache level. Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-31[IA64] cpu-hotplug: Fixing confliction between CPU hot-add and IPIKenji Kaneshige
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Acked-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-31[MIPS] Fixup migration to GENERIC_TIMEAtsushi Nemoto
Since we already moved to GENERIC_TIME, we should implement alternatives of old do_gettimeoffset routines to get sub-jiffies resolution from gettimeofday(). This patch includes: * MIPS clocksource support (based on works by Manish Lachwani). * remove unused gettimeoffset routines and related codes. * remove unised 64bit do_div64_32(). * simplify mips_hpt_init. (no argument needed, __init tag) * simplify c0_hpt_timer_init. (no need to write to c0_count) * remove some hpt_init routines. * mips_hpt_mask variable to specify bitmask of hpt value. * convert jmr3927_do_gettimeoffset to jmr3927_hpt_read. * convert ip27_do_gettimeoffset to ip27_hpt_read. * convert bcm1480_do_gettimeoffset to bcm1480_hpt_read. * simplify sb1250 hpt functions. (no need to subtract and shift) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] VSMP: Synchronize cp0 counters on bootup.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] Flags must be unsigned long.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] VSMP: Fix initialization ordering bug.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] Fix warning of printk format in mips_srs_init()Yoichi Yuasa
arch/mips/kernel/traps.c:1115: warning: int format, long unsigned int arg (arg 2) Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] Yosemite: fix uninitialized variable in titan_i2c_xfer()Yoichi Yuasa
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] Sort out missuse of __init for prom_getcmdline()Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] Add missing file for support of backplane on TX4927 based boardManish Lachwani
Signed-off-by: Manish Lachwani <mlachwani@mvista.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31[MIPS] TX4927: Remove indent error message that somehow ended in the code.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-31Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Titan defconfig update. sh: Fix IPR-IRQ's for IRQ-chip change breakage. sh: Update r7780rp_defconfig. video: Fix include in hp680_bl. sh: Wire up new syscalls.
2006-10-31Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Add some missing print_symbol() calls. [SPARC64]: Fix Tomatillo/Schizo IRQ handling.
2006-10-31[PATCH] uml: add _text definition to linker scriptsJeff Dike
kallsyms now refers to addresses as '_text + 0xADDRESS', rather than just '0xADDRESS', so we need to define _text. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: various little changesPaolo 'Blaisorblade' Giarrusso
Fix a small memory leak in ubd_config, and clearify the confusion which lead to it. Then, some little changes not affecting operations - * move init functions together, * add a comment about a potential problem in case of some evolution in the block layer, * mark all initcalls as static __init functions * mark an used once little function as inline * document that mconsole methods are all called in process context (was triggered when checking ubd mconsole methods). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: do not store error codes as ->fdPaolo 'Blaisorblade' Giarrusso
To simplify error handling, make sure fd is saved into ubd_dev->fd only when we are sure it is an fd and not an error code. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: use bitfields where possiblePaolo 'Blaisorblade' Giarrusso
Use bitfields for boolean fields in ubd data structure. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: reformat ubd_configPaolo 'Blaisorblade' Giarrusso
Pure whitespace and style fixes split out from subsequent patch. Some changes (err -> ret) don't make sense now, only later, but I split them out anyway since they cluttered the patch. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: convert do_ubd to a boolean variablePaolo 'Blaisorblade' Giarrusso
do_ubd is actually just a boolean variable - the way it is used currently is a leftover from the old 2.4 block layer, but it is still used; its use is suspicious, but removing it would be too intrusive for now and needs more thinking. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: ubd_io_lock usage fixupPaolo 'Blaisorblade' Giarrusso
Add some comments about requirements for ubd_io_lock and expand its use. When an irq signals that the "controller" (i.e. another thread on the host, which does the actual requests and is the only one blocked on I/O on the host) has done some work, we call again the request function ourselves (do_ubd_request). We now do that with ubd_io_lock held - that's useful to protect against concurrent calls to elv_next_request and so on. XXX: Maybe we shouldn't call at all the request function. Input needed on this. Are we supposed to plug and unplug the queue? That code "indirectly" does that by setting a flag, called do_ubd, which makes the request function return (it's a residual of 2.4 block layer interface). Meanwhile, however, merge this patch, which improves things. Cc: Jens Axboe <axboe@suse.de> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: change ubd_lock to be a mutexPaolo 'Blaisorblade' Giarrusso
This lock protects ubd setup and teardown, so is only used in process context; beyond that, during such setup memory allocations must be performed and some generic functions which can sleep must be called (such as add_disk()). So the only correct solution is to make it a mutex instead of a spin_lock. No other change is done - this lock must be acquired in different places but it's done afterwards. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: give better names to some functions.Paolo 'Blaisorblade' Giarrusso
To rethink locking, I needed to understand well what each function does. While doing this I renamed some: * ubd_close -> ubd_close_dev (since it pairs with ubd_open_dev) * ubd_new_disk -> ubd_disk_register (it handles registration with the block layer - one hopes this makes clearer the difference with ubd_add()) Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: var renamesPaolo 'Blaisorblade' Giarrusso
Rename the ubd_dev array to ubd_devs and then call any "struct ubd" ubd_dev instead of dev, which doesn't make clear what we're treating (and no, it's not hungarian notation - not any more than calling all vm_area_struct vma or all inodes inode). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: document some struct fieldsPaolo 'Blaisorblade' Giarrusso
Add documentation about some fields in struct ubd, whose meaning is non-obvious due to struct names (should change names altogether, I agree). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31[PATCH] uml ubd driver: allow using up to 16 UBD devicesPaolo 'Blaisorblade' Giarrusso
With 256 minors and 16 minors used per each UBD device, we can allow the use of up to 16 UBD devices per UML. Also chnage parse_unit and leave to the caller (which already do it) the check for excess numbers, since this is just supposed to do raw parsing. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-31sh: Titan defconfig update.Jamie Lenehan
Small defconfig update for titan for 2.6.19-rc3, adding SH-RTC. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-31sh: Fix IPR-IRQ's for IRQ-chip change breakage.Jamie Lenehan
The conversion from IPR-IRQ to IRQ-chip resulted in the ipr data being allocated in a local variable in make_ipr_irq - breaking anything using IPR interrupts. This changes all of the callers of make_ipr_irq to allocate a static structure containing the IPR data which is then passed to make_ipr_irq. This removes the need for make_ipr_irq to allocate any additional space for the IPR information. Signed-off-by: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-31sh: Update r7780rp_defconfig.Paul Mundt
Small defconfig updates for R7780RP, enabling SH-RTC. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-31sh: Wire up new syscalls.Paul Mundt
This wires up sys_move_pages, sys_getcpu, and sys_epoll_pwait. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-30[SPARC64]: Add some missing print_symbol() calls.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[SPARC64]: Fix Tomatillo/Schizo IRQ handling.David S. Miller
The code in schizo_irq_trans_init() should set irq_data->sync_reg to the location of the SYNC register if this is Tomatillo, and set it to zero otherwise. But that is not what it is doing. As a result, non-Tomatillo systems were trying to access a non-existent register resulting in bus errors at the first PCI interrupt. Thanks to Roland Stigge for the bug report. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-30[MIPS] JMR3927: Fixup another victim of the irq pt_regs cleanup.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] EMMA 2 / Markeins: struct resource takes physical addresses.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] EMMA 2 / Markeins: Convert to name struct resource initialization.Ralf Baechle
This fixes the wreckage caused by shuffeling the order of struct resource members. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] EMMA 2 / Markeins: Formitting fixes split from actual address fixes.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] EMMA 2 / Markeins: Fix build wreckage due to genirq wreckage.Ralf Baechle
I wonder if the original contributor still cares ... Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Ocelot G: Fix build error and numerous warnings.Ralf Baechle
The cause of the build errors was a 64-bit kernel being configured in ocelot_g_defconfig without the code being 64-bit proof. Fixed for now by limiting 64-bit selection to SYS_SUPPORTS_64BIT_KERNEL if BROKEN. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Fix return value of TXX9 SPI interrupt handlerYoichi Yuasa
Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Au1000: Fix warning about unused variable.Yoichi Yuasa
arch/mips/au1000/common/time.c: In function `mips_timer_interrupt': arch/mips/au1000/common/time.c:82: warning: unused variable `count' Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2006-10-30[MIPS] Wire up getcpu(2) and epoll_wait(2) syscalls.Ralf Baechle
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>