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* [PATCH] USB: pxa27x OHCI - Separate platform code from main driverRichard Purdie2006-01-042-0/+27
| | | | | | | | | | | | | | | | To allow multiple platforms to use the PXA27x OHCI driver, the platform code needs to be moved into the board specific files in arch/arm/mach-pxa. This patch does this for mainstone and adds preliminary hooks to allow other boards to use the driver. This has been compile tested for mainstone and successfully run on Spitz (Sharp Zaurus SL-C3000) with the addition of an appropriate board support file. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Nicolas Pitre <nico@cam.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] x86: teach dump_task_regs() about the -8 offset.Stas Sergeev2005-12-311-1/+3
| | | | | | | This should fix multi-threaded core-files Signed-off-by: stsp@aknet.ru Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ppc64: htab_initialize_secondary cannot be marked __initAnton Blanchard2005-12-291-1/+1
| | | | | | | | | | Sonny has noticed hotplug CPU on ppc64 is broken in 2.6.15-*. One of the problems is that htab_initialize_secondary is called when a cpu is being brought up, but it is marked __init. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Fix incorrect node_present_pages on NUMARavikiran G Thirumalai2005-12-291-1/+1
| | | | | | | | | | | | | | Currently, we do not pass the correct start_pfn to e820_hole_size, to calculate holes. Following patch fixes that. The bug results in incorrect number of node_present_pages for each pgdat and causes ugly output in /sys and probably VM inbalances. Signed-off-by: Alok N Kataria <alokk@calsoftinc.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Sighed-off-by: Shair Fultheim <shai@scalex86.org> Sighed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix compilation with CONFIG_MODE_TT disabledPaolo 'Blaisorblade' Giarrusso2005-12-292-5/+8
| | | | | | | | | | | | Fix UML compilation when SKAS mode is disabled. Indeed, we were compiling SKAS-only object files, which failed due to some SKAS-only headers being excluded from the search path. Thanks to the bug report from Pekka J Enberg. Acked-by: Pekka J Enberg <penberg (at) cs ! helsinki ! fi> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Hostfs: update for new glibc - add missing symbol exportsPaolo 'Blaisorblade' Giarrusso2005-12-291-0/+5
| | | | | | | | | | | | Today, when compiling UML, I got warnings for two used unexported symbols: readdir64 and truncate64. Indeed, my glibc headers are aliasing readdir to readdir64 and truncate to truncate64 (and so on). I'm then adding additional exports. Since I've no idea if the symbols where always provided in the supported glibc's, I've added weak definitions too. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix random segfaults at bootupPaolo 'Blaisorblade' Giarrusso2005-12-291-10/+12
| | | | | | | | | | | | | | | | | Don't use printk() where "current_thread_info()" is crap. Until when we switch to running on init_stack, current_thread_info() evaluates to crap. Printk uses "current" at times (in detail, &current is evaluated with CONFIG_DEBUG_SPINLOCK to check the spinlock owner task). And this leads to random segmentation faults. Exactly, what happens is that &current = *(current_thread_info()), i.e. round down $esp and dereference the value. I.e. access the stack below $esp, which causes SIGSEGV on a VM_GROWSDOWN vma (see arch/i386/mm/fault.c). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SPARC]: Use STABS_DEBUG and DWARF_DEBUG macros in vmlinux.lds.SDavid S. Miller2005-12-282-28/+8
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Kill CHILD_MAX.David S. Miller2005-12-223-3/+3
| | | | | | | | | | | It's definition is wrong (-1 means "no limit" not 999), only the Sparc SunOS/Solaris compat code uses it, so let's just kill it off completely from limits.h and all referencing code. Noticed by Ulrich Drepper. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: introduce a SPARC Kconfig symbolAdrian Bunk2005-12-222-0/+8
| | | | | | | | | | Introduce a Kconfig symbol SPARC that is defined on both the sparc and sparc64 architectures. This symbol makes some dependencies more readable. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* powerpc: Fix i8259 cascade on pSeries with XICS interrupt controllerPaul Mackerras2005-12-221-18/+3
| | | | | | | | | | | | | It turns out that commit f9bd170a87948a9e077149b70fb192c563770fdf broke the cascade from XICS to i8259 on pSeries machines; specifically we ended up not ever doing the EOI on the XICS for the cascade. The result was that interrupts from the serial ports (and presumably any other devices using ISA interrupts) didn't get through. This fixes it and also simplifies the code, by doing the EOI on the XICS in the xics_get_irq routine after reading and acking the interrupt on the i8259. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [SPARC64]: Stop putting -finline-limit=XXX into CFLAGSDavid S. Miller2005-12-201-5/+0
| | | | | | | | | | | | | | It was a stupid workaround for the "static inline" vs. "extern inline" issues of long ago, and it is what causes schedule() to be inlined like crazy into kernel/sched.c when -Os is specified. MIPS and S390 should probably do the same. Now CC_OPTIMIZE_FOR_SIZE can be safely used on sparc64 once more. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Fix build with CONFIG_PCI_MMCONFIGAndi Kleen2005-12-202-2/+2
| | | | | | | | | Now needs to include the type 1 functions ("direct") too. Reported by Pavel Roskin <proski@gnu.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2005-12-208-24/+30
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| * powerpc: update defconfigsPaul Mackerras2005-12-206-21/+26
| | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: CPM2 interrupt handler failure after 100,000 interruptsEdson Seabra2005-12-201-1/+2
| | | | | | | | | | | | | | | | | | | | The CPM2 interrupt handler does not return success to the IRQ subsystem, which causes it to kill the IRQ line after 100,000 interrupts. Signed-off-by: Edson Seabra <Edson.Seabra@cyclades.com> Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * powerpc: correct register usage in 64-bit syscall exit pathPaul Mackerras2005-12-201-2/+2
| | | | | | | | | | | | | | | | | | | | Since we don't restore the volatile registers in the syscall exit path, we need to make sure we don't leak any potentially interesting values from the kernel to userspace. This was already the case for all except r11. This makes it use r11 for an MSR value, so r11 will have an (uninteresting) MSR value in it on return to userspace. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-12-193-22/+55
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| * | [ARM] 3210/1: add missing memory barrier helper for NPTL supportNicolas Pitre2005-12-191-0/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Strictly speaking, the NPTL kernel helpers are required for pre ARMv6 only. They are available on ARMv6+ as well for obvious compatibility reasons. However there are cases where extra memory barriers are needed when using an SMP ARMv6 machine but not on pre-ARMv6. This patch adds a memory barrier kernel helper that glibc can use as needed for pre-ARMv6 binaries to be forward compatible with an SMP kernel on ARMv6, as well as the necessary dmb instructions to the cmpxchg helper. Signed-off-by: Nicolas Pitre <nico@cam.org> Acked-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Fix sys_sendto and sys_recvfrom 6-arg syscallsRussell King2005-12-172-22/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than providing more wrappers for 6-arg syscalls, arrange for them to be supported as standard. This just means that we always store the 6th argument on the stack, rather than in the wrappers. This means we eliminate the wrappers for: * sys_futex * sys_arm_fadvise64_64 * sys_mbind * sys_ipc Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | [PATCH] uml skas0: stop gcc's insanityJeff Dike2005-12-183-36/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> UML skas0 stub has been miscompiling for many people (incidentally not the authors), depending on the used GCC versions. I think (and testing on some GCC versions shows) this patch avoids the fundamental issue which is behind this, namely gcc using the stack when we have just replaced it, behind gcc's back. The remapping and storage of the return value is hidden in a blob of asm, hopefully giving gcc no room for creativity. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] uml - fix some funkiness in KconfigPaolo 'Blaisorblade' Giarrusso2005-12-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So you may have seen the miniconfig stuff wander by, which means that my build script exits if there's a .config error, and we have this: fs/Kconfig:1749:warning: 'select' used by config symbol 'CIFS_UPCALL' refer to undefined symbol 'CONNECTOR' This makes it shut up. Signed-off-by: Rob Landley <rob@landley.net> [ Verified it makes sense. ] Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] uml: fix dynamic linking on some 64-bit distrosRob Landley2005-12-181-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> The current UML build assumes that on x86-64 systems, /lib is a symlink to /lib64, but in some distributions (like PLD and CentOS) they are separate directories, so the 64 bit library loader isn't found. This patch inserts /lib64 at the start of the rpath on x86-64 UML builds. Signed-off-by: Rob Landley <rob@landley.net> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] uml: arch/um/scripts/Makefile.rules - remove duplicated codePaolo 'Blaisorblade' Giarrusso2005-12-181-5/+0
|/ / | | | | | | | | | | | | | | Duplicated code - the patch adding it was probably applied twice without enough care. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'release' of ↵Linus Torvalds2005-12-165-5/+37
|\ \ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
| * | [IA64] Add __read_mostly support for IA64Christoph Lameter2005-12-161-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sparc64, i386 and x86_64 have support for a special data section dedicated to rarely updated data that is frequently read. The section was created to avoid false sharing of those rarely read data with frequently written kernel data. This patch creates such a data section for ia64 and will group rarely written data into this section. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64-SGI] change default_sn2 to NR_CPUS==1024hawkes@sgi.com2005-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Change the NR_CPUS default for ia64/sn up to 1024. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: John Hesterberg <jh@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64-SGI] Missed TLB flushJack Steiner2005-12-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I see why the problem exists only on SN. SN uses a different hardware mechanism to purge TLB entries across nodes. It looks like there is a bug in the SN TLB flushing code. During context switch, kernel threads inherit the mm of the task that was previously running on the cpu. This confuses the code in sn2_global_tlb_purge(). The result is a missed TLB purge for the task that owns the "borrowed" mm. (I hit the problem running heavy stress where kswapd was purging code pages of a user task that woke kswapd. The user task took a SIGILL fault trying to execute code in the page that had been ripped out from underneath it). Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] uncached ref count leakJes Sorensen2005-12-161-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | Use raw_smp_processor_id() instead of get_cpu() as we don't need the extra features of get_cpu(). Signed-off-by: Jes Sorensen <jes@trained-monkey.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] disable preemption in udelay()John Hawkes2005-12-161-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The udelay() inline for ia64 uses the ITC. If CONFIG_PREEMPT is enabled and the platform has unsynchronized ITCs and the calling task migrates to another CPU while doing the udelay loop, then the effective delay may be too short or very, very long. This patch disables preemption around 100 usec chunks of the overall desired udelay time. This minimizes preemption-holdoffs. udelay() is now too big to be inline, move it out of line and export it. Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | [PATCH] ppc: ppc4xx_dma DMA_MODE_{READ,WRITE} fixAl Viro2005-12-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DMA_MODE_{READ,WRITE} are declared in asm-powerpc/dma.h and their declarations there match the definitions. Old declarations in ppc4xx_dma.h are not right anymore (wrong type, to start with). Killed them, added include of asm/dma.h where needed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | [PATCH] PCI: Fix dumb bug in mmconfig fixAndi Kleen2005-12-161-1/+1
|/ / | | | | | | | | | | | | | | | | | | | | | | Use correct address when referencing mmconfig aperture while checking for broken MCFG. This was a typo when porting the code from 64bit to 32bit. It caused oopses at boot on some ThinkPads. Should definitely go into 2.6.15. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arch/powerpc/kernel/syscalls.c __user annotationsAl Viro2005-12-151-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arch/alpha/kernel/machvec_impl.h: C99 struct initializerAl Viro2005-12-151-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] ia64 sn __iomem annotationsAl Viro2005-12-152-30/+30
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386,amd64: ioremap.c __iomem annotationsAl Viro2005-12-152-2/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386,amd64: mmconfig __iomem annotationsAl Viro2005-12-152-8/+8
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] arch/sparc/kernel/led.c __user annotationsAl Viro2005-12-151-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sun4c_memerr_reg __iomem annotationsAl Viro2005-12-151-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sparc: NULL noise removal (ebus.c)Al Viro2005-12-151-12/+12
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] sparc/kernel/time: __iomem annotationsAl Viro2005-12-151-2/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] fix iomem annotations in sparc32 pcic codeAl Viro2005-12-151-1/+1
|/ | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-12-142-4/+7
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| * [ARM] 3205/1: Handle new EABI relocations when loading kernel modules.Daniel Jacobowitz2005-12-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | Patch from Daniel Jacobowitz Handle new EABI relocations when loading kernel modules. This is necessary for CONFIG_AEABI kernels, and also for some broken (since fixed) old ABI toolchains. Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3201/1: PXA27x: Prevent hangup during resume due to inadvertedly ↵Lothar Wassmann2005-12-121-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | enabling MBREQ (replaces: 3198/1) Patch from Lothar Wassmann The patch makes sure, that the ouptut functions of pins are restored before restoring the Alternat Function settings, preventing pins from being intermediately configured for undefined or unwanted alternate functions. Here is the original comment: I've got a PXA270 system that uses GPIO80 as nCS4. This system did hang on resume. Digging into the problem I found that the processor stalled immediately when restoring the GAFR2_U register which restored the alternate function for GPIO80. Since the GPDR registers were restored after the GAFR registers, the offending GPIO was configured as input at this point. Thus the alternate function that was in effect after restoring the GAFR was in fact the input function "MBREQ" instead of the output function "nCS4". The "PXA27x Processor Family Developer's Manual" (Footnote in Table 6-1 on page 6-3) states that: "The MBREQ alternate function must not be enabled until the PSSR[RDH] bit field is cleared. For more details, see Table 3-15, "PSSR Bit Definitions" on page 3-71." There is another note in the Developer's Manual (chapter 24.4.2 "GPIO operation as Alternate Function" on page 24-4) stating that: "Configuring a GPIO for an alternate function that is not defined for it causes unpredictable results." Since some GPIOs have no input function defined, and to prevent inadvertedly programming the MBREQ function on some pin, the GAFR registers should be restored after the GPDR registers have been restored. Additional provisions have to be made when the MBREQ function is actually required. The corresponding GAFR bits should not be restored with the regular GAFR restore, but must be set only after the PSSR bits have been cleared. Signed-off-by: Lothar Wassmann <LW@KARO-electronics.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [IA64] fix for SET_PERSONALITY when CONFIG_IA32_SUPPORT is not set.Robin Holt2005-12-141-0/+2
| | | | | | | | | | | | | | Missed this when fixing the SET_PERSONALITY change. Signed-off-by: Robin Holt <holt@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [PATCH] x86_64: Bug correction in populate_memnodemap()Eric Dumazet2005-12-121-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As reported by Keith Mannthey, there are problems in populate_memnodemap() The bug was that the compute_hash_shift() was returning 31, with incorrect initialization of memnodemap[] To correct the bug, we must use (1UL << shift) instead of (1 << shift) to avoid an integer overflow, and we must check that shift < 64 to avoid an infinite loop. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Fix collision between pmtimer and pit/hpetjohn stultz2005-12-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | On systems that do not support the HPET legacy functions (basically the IBM x460, but there could be others), in time_init() we accidentally fall into a PM timer conditional and set the vxtime_hz value to the PM timer's frequency. We then use this value with the HPET for timekeeping. This patch (which mimics the behavior in time_init_gtod) corrects the collision. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Fix 32bit thread coredumpsAndi Kleen2005-12-121-2/+1
| | | | | | | | | | | | | | | | | | | | When a register set is passed in don't try to fix up the pointer. Noticed by Al Viro Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386/x86-64 Correct for broken MCFG tables on K8 systemsAndi Kleen2005-12-122-5/+76
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | They report all busses as MMCONFIG capable, but it never works for the internal devices in the CPU's builtin northbridge. It just probes all func 0 devices on bus 0 (the internal northbridge is currently always on bus 0) and if they are not accessible using MCFG they are put into a special fallback bitmap. On systems where it isn't we assume the BIOS vendor supplied correct MCFG. Requires the earlier patch for mmconfig type1 fallback Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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