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2008-04-27KVM: x86 emulator: Group decoding for group 3Avi Kivity
This adds group decoding support for opcodes 0xf6, 0xf7 (group 3). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: group decoding for group 1AAvi Kivity
This adds group decode support for opcode 0x8f. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: add support for group decodingAvi Kivity
Certain x86 instructions use bits 3:5 of the byte following the opcode as an opcode extension, with the decode sometimes depending on bits 6:7 as well. Add support for this in the main decoding table rather than an ad-hock adaptation per opcode. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: Simplify hash table indexingDong, Eddie
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: Update shadow ptes on partial guest pte writesDong, Eddie
A guest partial guest pte write will leave shadow_trap_nonpresent_pte in spte, which generates a vmexit at the next guest access through that pte. This patch improves this by reading the full guest pte in advance and thus being able to update the spte and eliminate the vmexit. This helps pae guests which use two 32-bit writes to set a single 64-bit pte. [truncation fix by Eric] Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27sparc64: Kill bogus RT_ALIGNEDSZ macro from signal.cDavid S. Miller
The structure has to be 8-byte aligned in size, so this macro is just noise. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc: sunzilog.c remove unused argumentRobert Reif
Remove unused argument in function call. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc: fix drivers/video/tcx.c warningRobert Reif
Fix compile warning: CC drivers/video/tcx.o drivers/video/tcx.c: In function ‘tcx_init_one’: drivers/video/tcx.c:477: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 4 has type ‘resource_size_t’ This was the only sparc driver to use the resource directly in the printk so I changed it to physbase like the other drivers. Boot tested on SS4. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Kill unused local ISA bus layer.David S. Miller
No more drivers use this, and therefore it can die. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26input: Rewrite sparcspkr device probing.David S. Miller
Remove all dependencies on EBUS and ISA bus layers, which we'd like to remove as they are superfluous. While we're here, add support for proper frequency changing on BBC beep devices. Unlike the comments that were here, this device can in fact use a programmable frequency. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Do not ignore 'pmu' device ranges.David S. Miller
I must have disabled this due to other bugs which were fixed over time. And this is needed in order for child devices of "pmu" to get proper resource values. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Kill ISA_FLOPPY_WORKS code.David S. Miller
This never was enabled, I could never get it working, and if anyone wants to try and get it's very easy to reference this code in the history. It's the only thing referencing the silly ISA device layer in the sparc64 tree. OF device layer infrastructure is what should be used for these things. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Kill CONFIG_SPARC32_COMPATDavid S. Miller
It's completely superfluous, CONFIG_COMPAT is sufficient. What this used to be is an umbrella for enabling code shared by all 32-bit compat binary support types. But with the removal of SunOS and Solaris support, the only one left is Linux 32-bit ELF. Update defconfig. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Cleanups and corrections for arch/sparc64/KconfigDavid S. Miller
Refer to chip as "SPARC" throughout. Say 32-bit SPARC and 64-bit SPARC rather than mentioning specific chips such like UltraSPARC, as appropriate. Remove non-sense help text referring to things that will never appear on a SPARC system, such as EISA busses etc. Use "help" instead of "--help--" Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-26sparc64: Fix wedged irq regression.David S. Miller
Kernel bugzilla 10273 As reported by Jos van der Ende, ever since commit 5a606b72a4309a656cd1a19ad137dc5557c4b8ea ("[SPARC64]: Do not ACK an INO if it is disabled or inprogress.") sun4u interrupts can get stuck. What this changset did was add the following conditional to the various IRQ chip ->enable() handlers on sparc64: if (unlikely(desc->status & (IRQ_DISABLED|IRQ_INPROGRESS))) return; which is correct, however it means that special care is needed in the ->enable() method. Specifically we must put the interrupt into IDLE state during an enable, or else it might never be sent out again. Setting the INO interrupt state to IDLE resets the state machine, the interrupt input to the INO is retested by the hardware, and if an interrupt is being signalled by the device, the INO moves back into TRANSMIT state, and an interrupt vector is sent to the cpu. The two sun4v IRQ chip handlers were already doing this properly, only sun4u got it wrong. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-27Input: xpad - fix build failureDmitry Torokhov
If both CONFIG_JOYSTICK_XPAD_FF and CONFIG_JOYSTICK_XPAD_LEDS are unset xpad_bulk_out is not defined and build fails. Move it out of the #ifdef block so it is always defined. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-04-27fix idle (arch, acpi and apm) and lockdepPeter Zijlstra
OK, so 25-mm1 gave a lockdep error which made me look into this. The first thing that I noticed was the horrible mess; the second thing I saw was hacks like: 71e93d15612c61c2e26a169567becf088e71b8ff The problem is that arch idle routines are somewhat inconsitent with their IRQ state handling and instead of fixing _that_, we go paper over the problem. So the thing I've tried to do is set a standard for idle routines and fix them all up to adhere to that. So the rules are: idle routines are entered with IRQs disabled idle routines will exit with IRQs enabled Nearly all already did this in one form or another. Merge the 32 and 64 bit bits so they no longer have different bugs. As for the actual lockdep warning; __sti_mwait() did a plainly un-annotated irq-enable. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: add pci=check_enable_amd_mmconf and dmi checkYinghai Lu
so will disable that feature by default, and only enable that via pci=check_enable_amd_mmconf or for system match with dmi table. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: work around io allocation overlap of HT linksYinghai Lu
normally BIOSes assign io/mmio range to different HT links without overlapping, even same node same link should get non overlapping entries. but Rafael L. Wysocki's buggy BIOS creates a link with overlapping entries for mmio and io: node 0 link 0: io port [1000, ffffff] node 0 link 0: mmio [e0000000, efffffff] node 0 link 0: mmio [a0000, bffff] node 0 link 0: mmio [80000000, ffffffff] try to merge them and we will get: bus: [00, ff] on node 0 link 0 bus: 00 index 0 io port: [0, ffff] bus: 00 index 1 mmio: [80000000, fcffffffff] bus: 00 index 2 mmio: [a0000, bffff] so later we will reduce the chance to assign used resource to unassigned device. Reported-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Tested-by: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26acpi: get boot_cpu_id as early for k8_scan_nodesYinghai Lu
[mingo@elte.hu: split from "x86_64: get boot_cpu_id as early for k8_scan_nodes] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86_64: don't need set default res if only have one root busYinghai Lu
if there's only one root bus there's no need to split resources. This patch fixes the issue described at: http://lkml.org/lkml/2008/4/10/304 Reported-and-bisected-by: Rafael J. Wysocki <rjw@sisk.pl> Tested-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: double check the multi root bus with fam10h mmconfYinghai Lu
some bioses give same range to mmconf for fam10h msr, and mmio for node/link. fam10h msr will overide mmio for node/link. so we can not assign range to devices under node/link for unassigned resources. this patch will take range out from the mmio for node/link Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: multi pci root bus with different io resource range, on 64-bitYinghai Lu
scan AMD opteron io/mmio routing to make sure every pci root bus get correct resource range. Thus later pci scan could assign correct resource to device with unassigned resource. this can fix a system without _CRS for multi pci root bus. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: use bus conf in NB conf fun1 to get bus range on, on 64-bitYinghai Lu
... so we use the same code with Quad core cpu as old opteron. This patch is useful when acpi=off or _PXM is not there in DSDT. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: get mp_bus_to_node earlyYinghai Lu
Currently, on an amd k8 system with multi ht chains, the numa_node of pci devices under /sys/devices/pci0000:80/* is always 0, even if that chain is on node 1 or 2 or 3. Workaround: pcibus_to_node(bus) is used when we want to get the node that pci_device is on. In struct device, we already have numa_node member, and we could use dev_to_node()/set_dev_node() to get and set numa_node in the device. set_dev_node is called in pci_device_add() with pcibus_to_node(bus), and pcibus_to_node uses bus->sysdata for nodeid. The problem is when pci_add_device is called, bus->sysdata is not assigned correct nodeid yet. The result is that numa_node will always be 0. pcibios_scan_root and pci_scan_root could take sysdata. So we need to get mp_bus_to_node mapping before these two are called, and thus get_mp_bus_to_node could get correct node for sysdata in root bus. In scanning of the root bus, all child busses will take parent bus sysdata. So all pci_device->dev.numa_node will be assigned correctly and automatically. Later we could use dev_to_node(&pci_dev->dev) to get numa_node, and we could also could make other bus specific device get the correct numa_node too. This is an updated version of pci_sysdata and Jeff's pci_domain patch. [ mingo@elte.hu: build fix ] Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86 pci: remove checking type for mmconfig probeYinghai Lu
doesn't need to check if it is type1 or type2, we can use raw_pci_ops directly. also make pci_direct_conf1 static again. anyway is there system with type 2 and mmconf support? Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: remove unneeded check in mmconf rejectYinghai Lu
mmconfig is only used to access extended configuration space. so don't need to reject MFG that only have one entry and only handle bus0. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26driver core: try parent numa_node at first before using defaultYinghai Lu
in the device_add, we try to use use parent numa_node. need to make sure pci root bus's bridge device numa_node is set. then we could use device->numa_node direclty for all device. and don't need to call pcibus_to_node(). Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: seperate mmconf for fam10h out from setup_64.cYinghai Lu
Separate mmconf for fam10h out from setup_64.c Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: if acpi=off, force setting the mmconf for fam10hYinghai Lu
some BIOS only let AMD fam 10h handle bus0, and nvidia mcp55/ck804 to handle other buses. at that case MCFG will cover all over them. but with acpi=off, we can not use MCFG. this patch will double check the busnbits, and if it is less handling 256 bues, and acpi=off will forcely reset the mmconf in msr, so we still use mmconf in above case. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86_64: check MSR to get MMCONFIG for AMD Family 10hYinghai Lu
so even booting kernel with acpi=off or even MCFG is not there, we still can use MMCONFIG. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andi Kleen <ak@suse.de> Cc: Greg KH <greg@kroah.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86_64: check and enable MMCONFIG for AMD Family 10hYinghai Lu
So we can use MMCONF when MMCONF is not set by BIOS using TOP_MEM2 msr to get memory top, and try to scan fam10h mmio routing to make sure the range is not conflicted with some prefetch MMIO that is above 4G. (current only LinuxBIOS assign 64 bit mmio above 4G for some co-processor) Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86_64: set cfg_size for AMD Family 10h in case MMCONFIGYinghai Lu
reuse pci_cfg_space_size but skip check pci express and pci-x CAP ID. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: mmconf enable mcfg earlyYinghai Lu
Patch "x86: validate against ACPI motherboard resources" changed the mmconf init sequence, and init MMCONF late in acpi_init. here change it back to old sequence: 1. check hostbridge in early 2. check MCFG with e820 in early 3. if all fail, will check MCFg with acpi _CRS in acpi_init So we can make MCONF working again when acpi=off is set if hostbridge support that. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Greg KH <greg@kroah.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: clear pci_mmcfg_virt when mmcfg get rejectedYinghai Lu
For x86_64, need to free pci_mmcfg_virt, and iounmap some pointers when MMCONF is not reserved in E820 or acpi _CRS and get rejected. Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Cc: Greg KH <greg@kroah.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86: validate against acpi motherboard resourcesRobert Hancock
This path adds validation of the MMCONFIG table against the ACPI reserved motherboard resources. If the MMCONFIG table is found to be reserved in ACPI, we don't bother checking the E820 table. The PCI Express firmware spec apparently tells BIOS developers that reservation in ACPI is required and E820 reservation is optional, so checking against ACPI first makes sense. Many BIOSes don't reserve the MMCONFIG region in E820 even though it is perfectly functional, the existing check needlessly disables MMCONFIG in these cases. In order to do this, MMCONFIG setup has been split into two phases. If PCI configuration type 1 is not available then MMCONFIG is enabled early as before. Otherwise, it is enabled later after the ACPI interpreter is enabled, since we need to be able to execute control methods in order to check the ACPI reserved resources. Presently this is just triggered off the end of ACPI interpreter initialization. There are a few other behavioral changes here: - Validate all MMCONFIG configurations provided, not just the first one. - Validate the entire required length of each configuration according to the provided ending bus number is reserved, not just the minimum required allocation. - Validate that the area is reserved even if we read it from the chipset directly and not from the MCFG table. This catches the case where the BIOS didn't set the location properly in the chipset and has mapped it over other things it shouldn't have. This also cleans up the MMCONFIG initialization functions so that they simply do nothing if MMCONFIG is not compiled in. Based on an original patch by Rajesh Shah from Intel. [akpm@linux-foundation.org: many fixes and cleanups] Signed-off-by: Robert Hancock <hancockr@shaw.ca> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Andi Kleen <ak@suse.de> Cc: Rajesh Shah <rajesh.shah@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andi Kleen <ak@suse.de> Cc: Greg KH <greg@kroah.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootmem-v3 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootmem-v3: x86_64/mm: check and print vmemmap allocation continuous x86_64: fix setup_node_bootmem to support big mem excluding with memmap x86_64: make reserve_bootmem_generic() use new reserve_bootmem() mm: allow reserve_bootmem() cross nodes mm: offset align in alloc_bootmem() mm: fix alloc_bootmem_core to use fast searching for all nodes mm: make mem_map allocation continuous
2008-04-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: kbuild: scripts/Makefile.modpost typo fix kbuild: soften MODULE_LICENSE check
2008-04-26x86_64/mm: check and print vmemmap allocation continuousYinghai Lu
On big systems with lots of memory, don't print out too much during bootup, and make it easy to find if it is continuous. on 256G 8 sockets system will get [ffffe20000000000-ffffe20002bfffff] PMD -> [ffff810001400000-ffff810003ffffff] on node 0 [ffffe2001c700000-ffffe2001c7fffff] potential offnode page_structs [ffffe20002c00000-ffffe2001c7fffff] PMD -> [ffff81000c000000-ffff8100255fffff] on node 0 [ffffe20038700000-ffffe200387fffff] potential offnode page_structs [ffffe2001c800000-ffffe200387fffff] PMD -> [ffff810820200000-ffff81083c1fffff] on node 1 [ffffe20040000000-ffffe2007fffffff] PUD ->ffff811027a00000 on node 2 [ffffe20038800000-ffffe2003fffffff] PMD -> [ffff811020200000-ffff8110279fffff] on node 2 [ffffe20054700000-ffffe200547fffff] potential offnode page_structs [ffffe20040000000-ffffe200547fffff] PMD -> [ffff811027c00000-ffff81103c3fffff] on node 2 [ffffe20070700000-ffffe200707fffff] potential offnode page_structs [ffffe20054800000-ffffe200707fffff] PMD -> [ffff811820200000-ffff81183c1fffff] on node 3 [ffffe20080000000-ffffe200bfffffff] PUD ->ffff81202fa00000 on node 4 [ffffe20070800000-ffffe2007fffffff] PMD -> [ffff812020200000-ffff81202f9fffff] on node 4 [ffffe2008c700000-ffffe2008c7fffff] potential offnode page_structs [ffffe20080000000-ffffe2008c7fffff] PMD -> [ffff81202fc00000-ffff81203c3fffff] on node 4 [ffffe200a8700000-ffffe200a87fffff] potential offnode page_structs [ffffe2008c800000-ffffe200a87fffff] PMD -> [ffff812820200000-ffff81283c1fffff] on node 5 [ffffe200c0000000-ffffe200ffffffff] PUD ->ffff813037a00000 on node 6 [ffffe200a8800000-ffffe200bfffffff] PMD -> [ffff813020200000-ffff8130379fffff] on node 6 [ffffe200c4700000-ffffe200c47fffff] potential offnode page_structs [ffffe200c0000000-ffffe200c47fffff] PMD -> [ffff813037c00000-ffff81303c3fffff] on node 6 [ffffe200c4800000-ffffe200e07fffff] PMD -> [ffff813820200000-ffff81383c1fffff] on node 7 instead of a very long print out... Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86_64: fix setup_node_bootmem to support big mem excluding with memmapYinghai Lu
typical case: four sockets system, every node has 4g ram, and we are using: memmap=10g$4g to mask out memory on node1 and node2 when numa is enabled, early_node_mem is used to get node_data and node_bootmap. if it can not get memory from the same node with find_e820_area(), it will use alloc_bootmem to get buff from previous nodes. so check it and print out some info about it. need to move early_res_to_bootmem into every setup_node_bootmem. and it takes range that node has. otherwise alloc_bootmem could return addr that reserved early. depends on "mm: make reserve_bootmem can crossed the nodes". Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86_64: make reserve_bootmem_generic() use new reserve_bootmem()Yinghai Lu
"mm: make reserve_bootmem can crossed the nodes" provides new reserve_bootmem(), let reserve_bootmem_generic() use that. reserve_bootmem_generic() is used to reserve initramdisk, so this way we can make sure even when bootloader or kexec load ranges cross the node memory boundaries, reserve_bootmem still works. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26mm: allow reserve_bootmem() cross nodesYinghai Lu
split reserve_bootmem_core() into two functions, one which checks conflicts, and one which sets the bits. and make reserve_bootmem to loop bdata_list to cross the nodes. user could be crashkernel and ramdisk..., in case the range provided by those externalities crosses the nodes. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26mm: offset align in alloc_bootmem()Yinghai Lu
need offset alignment when node_boot_start's alignment is less than the alignment required. use local node_boot_start to match alignment - so don't add extra operation in search loop. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26mm: fix alloc_bootmem_core to use fast searching for all nodesYinghai Lu
Make the nodes other than node 0 use bdata->last_success for fast search too. We need to use __alloc_bootmem_core() for vmemmap allocation for other nodes when numa and sparsemem/vmemmap are enabled. Also, make fail_block path increase i with incr only after ALIGN to avoid extra increase when size is larger than align. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26mm: make mem_map allocation continuousYinghai Lu
vmemmap allocation currently has this layout: [ffffe20000000000-ffffe200001fffff] PMD ->ffff810001400000 on node 0 [ffffe20000200000-ffffe200003fffff] PMD ->ffff810001800000 on node 0 [ffffe20000400000-ffffe200005fffff] PMD ->ffff810001c00000 on node 0 [ffffe20000600000-ffffe200007fffff] PMD ->ffff810002000000 on node 0 [ffffe20000800000-ffffe200009fffff] PMD ->ffff810002400000 on node 0 ... note that there is a 2M hole between them - not optimal. the root cause is that usemap (24 bytes) will be allocated after every 2M mem_map, and it will push next vmemmap (2M) to the next (2M) alignment. solution: try to allocate the mem_map continously. after the patch, we get: [ffffe20000000000-ffffe200001fffff] PMD ->ffff810001400000 on node 0 [ffffe20000200000-ffffe200003fffff] PMD ->ffff810001600000 on node 0 [ffffe20000400000-ffffe200005fffff] PMD ->ffff810001800000 on node 0 [ffffe20000600000-ffffe200007fffff] PMD ->ffff810001a00000 on node 0 [ffffe20000800000-ffffe200009fffff] PMD ->ffff810001c00000 on node 0 ... which is the ideal layout. and usemap will share a page because of they are allocated continuously too: sparse_early_usemap_alloc: usemap = ffff810024e00000 size = 24 sparse_early_usemap_alloc: usemap = ffff810024e00080 size = 24 sparse_early_usemap_alloc: usemap = ffff810024e00100 size = 24 sparse_early_usemap_alloc: usemap = ffff810024e00180 size = 24 ... so we make the bootmem allocation more compact and use less memory for usemap => mission accomplished ;-) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-generic-bitops-v3 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-generic-bitops-v3: x86, bitops: select the generic bitmap search functions x86: include/asm-x86/pgalloc.h/bitops.h: checkpatch cleanups - formatting only x86: finalize bitops unification x86, UML: remove x86-specific implementations of find_first_bit x86: optimize find_first_bit for small bitmaps x86: switch 64-bit to generic find_first_bit x86: generic versions of find_first_(zero_)bit, convert i386 bitops: use __fls for fls64 on 64-bit archs generic: implement __fls on all 64-bit archs generic: introduce a generic __fls implementation x86: merge the simple bitops and move them to bitops.h x86, generic: optimize find_next_(zero_)bit for small constant-size bitmaps x86, uml: fix uml with generic find_next_bit for x86 x86: change x86 to use generic find_next_bit uml: Kconfig cleanup uml: fix build error
2008-04-26Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (46 commits) ide: constify struct ide_dma_ops ide: add struct ide_dma_ops (take 3) ide: add IDE_HFLAG_SERIALIZE_DMA host flag sl82c105: check bridge revision in sl82c105_init_one() au1xxx-ide: use ->init_dma method palm_bk3710: use ->init_dma method sgiioc4: use ->init_dma method icside: use ->init_dma method ide-pmac: use ->init_dma method ide: do complete DMA setup in ->init_dma method (take 2) au1xxx-ide: fix MWDMA support ide: cleanup ide_setup_dma() ide: factor out setting PCI bus-mastering from ide_hwif_setup_dma() ide: export ide_allocate_dma_engine() ide: move ide_setup_dma() call out from ->init_dma method alim15x3: skip DMA initialization completely on revs < 0x20 pdc202xx_old: remove init_dma_pdc202xx() ide: don't display "BIOS" settings in ide_setup_dma() ide: remove ->cds field from ide_hwif_t (take 2) ide: remove ide_dma_iobase() ...
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootparam * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootparam: x86, boot: Document for linked list of struct setup_data x86, boot: export linked list of struct setup_data via debugfs x86, boot: add linked list of struct setup_data x86, boot: add free_early to early reservation machanism
2008-04-26ide: constify struct ide_dma_opsBartlomiej Zolnierkiewicz
* Export ide_dma_exec_cmd() and __ide_dma_test_irq(). * Constify struct ide_dma_ops. * Always set hwif->dma_ops to &sff_dma_ops in ide_setup_dma() (it is later overriden by ide_init_port() if needed) and drop 'const struct ide_port_info *d' argument. While at it: * Rename __ide_dma_test_irq() to ide_dma_test_irq(). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-26ide: add struct ide_dma_ops (take 3)Bartlomiej Zolnierkiewicz
Add struct ide_dma_ops and convert core code + drivers to use it. While at it: * Drop "ide_" prefix from ->ide_dma_end and ->ide_dma_test_irq methods. * Drop "ide_" "infixes" from DMA methods. * au1xxx-ide.c: - use auide_dma_{test_irq,end}() directly in auide_dma_timeout() * pdc202xx_old.c: - drop "old_" "infixes" from DMA methods * siimage.c: - add siimage_dma_test_irq() helper - print SATA warning in siimage_init_one() * Remove no longer needed ->init_hwif implementations. v2: * Changes based on review from Sergei: - s/siimage_ide_dma_test_irq/siimage_dma_test_irq/ - s/drive->hwif/hwif/ in idefloppy_pc_intr(). - fix patch description w.r.t. au1xxx-ide changes - fix au1xxx-ide build - fix naming for cmd64*_dma_ops - drop "ide_" and "old_" infixes - s/hpt3xxx_dma_ops/hpt37x_dma_ops/ - s/hpt370x_dma_ops/hpt370_dma_ops/ - use correct DMA ops for HPT302/N, HPT371/N and HPT374 - s/it821x_smart_dma_ops/it821x_pass_through_dma_ops/ v3: * Two bugs slipped in v2 (noticed by Sergei): - use correct DMA ops for HPT374 (for real this time) - handle HPT370/HPT370A properly Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
generated by cgit (git 2.34.1) at 2025-10-03 06:09:22 +0000