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2009-09-27const: mark struct vm_struct_operationsAlexey Dobriyan
* mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits) x86/PCI: make 32 bit NUMA node array int, not unsigned char x86/PCI: default pcibus cpumask to all cpus if it lacks affinity MAINTAINTERS: remove hotplug driver entries PCI: pciehp: remove slot capabilities definitions PCI: pciehp: remove error message definitions PCI: pciehp: remove number field PCI: pciehp: remove hpc_ops PCI: pciehp: remove pci_dev field PCI: pciehp: remove crit_sect mutex PCI: pciehp: remove slot_bus field PCI: pciehp: remove first_slot field PCI: pciehp: remove slot_device_offset field PCI: pciehp: remove hp_slot field PCI: pciehp: remove device field PCI: pciehp: remove bus field PCI: pciehp: remove slot_num_inc field PCI: pciehp: remove num_slots field PCI: pciehp: remove slot_list field PCI: fix VGA arbiter header file PCI: Disable AER with pci=nomsi ... Fixed up trivial conflicts in MAINTAINERS
2009-09-19Merge branch 'linus' into sfi-releaseLen Brown
Conflicts: arch/x86/kernel/setup.c drivers/acpi/power.c init/main.c Signed-off-by: Len Brown <len.brown@intel.com>
2009-09-18x86/PCI: make 32 bit NUMA node array int, not unsigned charJesse Barnes
We use -1 to indicate no node affinity, so we need a signed type here or all sorts of bad things happen, like crashes in dev_attr_show as reported by Ingo: [ 158.058140] warning: `dbus-daemon' uses 32-bit capabilities (legacy support in use) [ 159.370562] BUG: unable to handle kernel NULL pointer dereference at (null) [ 159.372694] IP: [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0 [ 159.372694] PGD 71d3e067 PUD 7052e067 PMD 0 [ 159.372694] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [ 159.372694] last sysfs file: /sys/devices/pci0000:00/0000:00:01.0/local_cpus [ 159.372694] CPU 0 [ 159.372694] Pid: 7364, comm: irqbalance Not tainted 2.6.31-tip #8043 System Product Name [ 159.372694] RIP: 0010:[<ffffffff8143b722>] [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0 [ 159.372694] RSP: 0018:ffff8800712a1e38 EFLAGS: 00010246 [ 159.372694] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 159.372694] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff880077dc5000 [ 159.372694] RBP: ffff8800712a1e68 R08: 0000000000000001 R09: 0000000000000001 [ 159.372694] R10: ffffffff8215c47c R11: 0000000000000000 R12: 0000000000000000 [ 159.372694] R13: 0000000000000000 R14: 0000000000000ffe R15: ffff880077dc5000 [ 159.372694] FS: 00007f5f578f76f0(0000) GS:ffff880007000000(0000) knlGS:0000000000000000 [ 159.372694] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 159.372694] CR2: 0000000000000000 CR3: 0000000071a77000 CR4: 00000000000006f0 [ 159.372694] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 159.372694] DR3: ffffffff835109dc DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 159.372694] Process irqbalance (pid: 7364, threadinfo ffff8800712a0000, task ffff880070773000) [ 159.372694] Stack: [ 159.372694] 2222222222222222 ffff880077dc5000 fffffffffffffffb ffff88007d366b40 [ 159.372694] <0> ffff8800712a1f48 ffff88007d3840a0 ffff8800712a1e88 ffffffff8146332b [ 159.372694] <0> fffffffffffffff4 ffffffff82450718 ffff8800712a1ea8 ffffffff815a9a1f [ 159.372694] Call Trace: [ 159.372694] [<ffffffff8146332b>] local_cpus_show+0x3b/0x60 [ 159.372694] [<ffffffff815a9a1f>] dev_attr_show+0x2f/0x60 [ 159.372694] [<ffffffff8118ee6f>] sysfs_read_file+0xbf/0x1d0 [ 159.372694] [<ffffffff8112afe9>] vfs_read+0xc9/0x180 [ 159.372694] [<ffffffff8112c365>] sys_read+0x55/0x90 [ 159.372694] [<ffffffff810114f2>] system_call_fastpath+0x16/0x1b [ 159.372694] Code: 41 b9 01 00 00 00 44 8d 46 03 49 63 fc 0f 49 d3 c1 f8 1f 4c 01 ff c1 e8 1a c1 fa 06 41 c1 e8 02 8d 0c 03 48 63 d2 83 e1 3f 29 c1 <49> 8b 44 d5 00 48 c7 c2 8c 37 16 82 48 d3 e8 89 f1 44 89 f6 49 [ 159.372694] RIP [<ffffffff8143b722>] bitmap_scnprintf+0x72/0xd0 [ 159.372694] RSP <ffff8800712a1e38> [ 159.372694] CR2: 0000000000000000 [ 159.600828] ---[ end trace 35550c356e84e60c ]--- Reported-by: Ingo Molnar <mingo@elte.hu> Tested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-16Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits) PCI hotplug: clean up acpi_run_hpp() PCI hotplug: acpiphp: use generic pci_configure_slot() PCI hotplug: shpchp: use generic pci_configure_slot() PCI hotplug: pciehp: use generic pci_configure_slot() PCI hotplug: add pci_configure_slot() PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation PCI: Clear saved_state after the state has been restored PCI PM: Return error codes from pci_pm_resume() PCI: use dev_printk in quirk messages PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset() PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle PCI Hotplug: acpiphp: find bridges the easy way PCI: pcie portdrv: remove unused variable PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support ACPI PM: Replace wakeup.prepared with reference counter PCI PM: Introduce device flag wakeup_prepared PCI / ACPI PM: Rework some debug messages PCI PM: Simplify PCI wake-up code ... Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree scanning having been moved and merged for the 32- and 64-bit cases. The 'needs_freset' initialization added in 6e19314cc ("PCI/powerpc: support PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.
2009-09-09x86/PCI: initialize PCI bus node numbers earlyJesse Barnes
The current mp_bus_to_node array is initialized only by AMD specific code, since AMD platforms have registers that can be used for determining mode numbers. On new Intel platforms it's necessary to initialize this array as well though, otherwise all PCI node numbers will be 0, when in fact they should be -1 (indicating that I/O isn't tied to any particular node). So move the mp_bus_to_node code into the common PCI code, and initialize it early with a default value of -1. This may be overridden later by arch code (e.g. the AMD code). With this change, PCI consistent memory and other node specific allocations (e.g. skbuff allocs) should occur on the "current" node. If, for performance reasons, applications want to be bound to specific nodes, they should open their devices only after being pinned to the CPU where they'll run, for maximum locality. Acked-by: Yinghai Lu <yinghai@kernel.org> Tested-by: Jesse Brandeburg <jesse.brandeburg@gmail.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-09-08dmi: extend dmi_get_year() to dmi_get_date()Tejun Heo
There are cases where full date information is required instead of just the year. Add month and day parsing to dmi_get_year() and rename it to dmi_get_date(). As the original function only required '/' followed by any number of parseable characters at the end of the string, keep that behavior to avoid upsetting existing users. The new function takes dates of format [mm[/dd]]/yy[yy]. Year, month and date are checked to be in the ranges of [1-9999], [1-12] and [1-31] respectively and any invalid or out-of-range component is returned as zero. The dummy implementation is updated accordingly but the return value is updated to indicate field not found which is consistent with how other dummy functions behave. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-08-28SFI: Hook PCI MMCONFIGFeng Tang
First check ACPI, and if that fails, ask SFI to find the MCFG. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-08-28ACPI, PCI: Change PREFIX to "PCI" from "ACPI" in mmconfig-shared.cLen Brown
Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-08-28ACPI: Move definition of PREFIX from acpi_bus.h to internal..hLen Brown
Linux/ACPI core files using internal.h all PREFIX "ACPI: ", however, not all ACPI drivers use/want it -- and they should not have to #undef PREFIX to define their own. Add GPL commment to internal.h while we are there. This does not change any actual console output, asside from a whitespace fix. Signed-off-by: Len Brown <len.brown@intel.com>
2009-07-10x86/pci: insert ioapic resource before assigning unassigned resourcesYinghai Lu
Stephen reported that his DL585 G2 needed noapic after 2.6.22 (?) Dann bisected it down to: commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029 Date: Tue Feb 19 03:21:20 2008 -0800 x86: multi pci root bus with different io resource range, on 64-bit It turns out that: 1. that AMD-based systems have two HT chains. 2. BIOS doesn't allocate resources for BAR 6 of devices under 8132 etc 3. that multi-peer-root patch will try to split root resources to peer root resources according to PCI conf of NB 4. PCI core assigns unassigned resources, but they overlap with BARs that are used by ioapic addr of io4 and 8132. The reason: at that point ioapic address are not inserted yet. Solution is to insert ioapic resources into the tree a bit earlier. Reported-by: Stephen Frost <sfrost@snowman.net> Reported-and-Tested-by: dann frazier <dannf@hp.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: stable@kernel.org Signed-off-by: Jesse Barnes <jbarnes@jbarnes-g45.(none)>
2009-06-30x86/PCI: get root CRS before scanning childrenYinghai Lu
This allows us to remove adjust_transparent_bridge_resources and give x86_pci_root_bus_res_quirks a chance when _CRS is not used or not there. Acked-by: Gary Hade <garyhade@us.ibm.com> Tested-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-30x86/PCI: fix boundary checking when using root CRSYinghai Lu
Don't touch info->res_num if we are out of space. Acked-by: Gary Hade <garyhade@us.ibm.com> Tested-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-24Revert "PCI: use ACPI _CRS data by default"Linus Torvalds
This reverts commit 9e9f46c44e487af0a82eb61b624553e2f7118f5b. Quoting from the commit message: "At this point, it seems to solve more problems than it causes, so let's try using it by default. It's an easy revert if it ends up causing trouble." And guess what? The _CRS code causes trouble. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24Merge branches 'acerhdf', 'acpi-pci-bind', 'bjorn-pci-root', ↵Len Brown
'bugzilla-12904', 'bugzilla-13121', 'bugzilla-13396', 'bugzilla-13533', 'bugzilla-13612', 'c3_lock', 'hid-cleanups', 'misc-2.6.31', 'pdc-leak-fix', 'pnpacpi', 'power_nocheck', 'thinkpad_acpi', 'video' and 'wmi' into release
2009-06-22Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (74 commits) PCI: make msi_free_irqs() to use msix_mask_irq() instead of open coded write PCI: Fix the NIU MSI-X problem in a better way PCI ASPM: remove get_root_port_link PCI ASPM: cleanup pcie_aspm_sanity_check PCI ASPM: remove has_switch field PCI ASPM: cleanup calc_Lx_latency PCI ASPM: cleanup pcie_aspm_get_cap_device PCI ASPM: cleanup clkpm checks PCI ASPM: cleanup __pcie_aspm_check_state_one PCI ASPM: cleanup initialization PCI ASPM: cleanup change input argument of aspm functions PCI ASPM: cleanup misc in struct pcie_link_state PCI ASPM: cleanup clkpm state in struct pcie_link_state PCI ASPM: cleanup latency field in struct pcie_link_state PCI ASPM: cleanup aspm state field in struct pcie_link_state PCI ASPM: fix typo in struct pcie_link_state PCI: drivers/pci/slot.c should depend on CONFIG_SYSFS PCI: remove redundant __msi_set_enable() PCI PM: consistently use type bool for wake enable variable x86/ACPI: Correct maximum allowed _CRS returned resources and warn if exceeded ...
2009-06-17x86: Use pci_claim_resourceMatthew Wilcox
Instead of open-coding pci_find_parent_resource and request_resource, just call pci_claim_resource. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16x86/ACPI: Correct maximum allowed _CRS returned resources and warn if exceededGary Hade
Issue a warning if _CRS returns too many resource descriptors to be accommodated by the fixed size resource array instances. If there is no transparent bridge on the root bus "too many" is the PCI_BUS_NUM_RESOURCES size of the resource array. Otherwise, the last 3 slots of the resource array must be excluded making the maximum (PCI_BUS_NUM_RESOURCES - 3). The current code: - is silent when _CRS returns too many resource descriptors and - incorrectly allows use of the last 3 slots of the resource array for a root bus with a transparent bridge Signed-off-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-12ACPI, PCI, x86: move MCFG parsing routine from ACPI to PCI fileLen Brown
Move arch/x86/kernel/acpi/boot.c: acpi_parse_mcfg() to arch/x86/pci/mmconfig-shared.c: pci_parse_mcfg() where it is used, and make it static. Move associated globals and helper routine with it. No functional change. This code move is in preparation for SFI support, which will allow the PCI code to find the MCFG table on systems which do not support ACPI. Signed-off-by: Len Brown <len.brown@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-11PCI: use ACPI _CRS data by defaultJesse Barnes
At this point, it seems to solve more problems than it causes, so let's try using it by default. It's an easy revert if it ends up causing trouble. Reviewed-by: Yinghai Lu <yhlu.kernel@gmail.com> Acked-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-06-10Merge branch 'irq-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (76 commits) x86, apic: Fix dummy apic read operation together with broken MP handling x86, apic: Restore irqs on fail paths x86: Print real IOAPIC version for x86-64 x86: enable_update_mptable should be a macro sparseirq: Allow early irq_desc allocation x86, io-apic: Don't mark pin_programmed early x86, irq: don't call mp_config_acpi_gsi() if update_mptable is not enabled x86, irq: update_mptable needs pci_routeirq x86: don't call read_apic_id if !cpu_has_apic x86, apic: introduce io_apic_irq_attr x86/pci: add 4 more return parameters to IO_APIC_get_PCI_irq_vector(), fix x86: read apic ID in the !acpi_lapic case x86: apic: Fixmap apic address even if apic disabled x86: display extended apic registers with print_local_APIC and cpu_debug code x86: read apic ID in the !acpi_lapic case x86: clean up and fix setup_clear/force_cpu_cap handling x86: apic: Check rev 3 fadt correctly for physical_apic bit x86/pci: update pirq_enable_irq() to setup io apic routing x86/acpi: move setup io apic routing out of CONFIG_ACPI scope x86/pci: add 4 more return parameters to IO_APIC_get_PCI_irq_vector() ...
2009-06-04x86/pci: fix mmconfig detection with 32bit near 4gYinghai Lu
Pascal reported and bisected a commit: | x86/PCI: don't call e820_all_mapped with -1 in the mmconfig case which broke one system system. ACPI: Using IOAPIC for interrupt routing PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 255 PCI: MCFG area at f0000000 reserved in ACPI motherboard resources PCI: Using MMCONFIG for extended config space it didn't have PCI: updated MCFG configuration 0: base f0000000 segment 0 buses 0 - 63 anymore, and try to use 0xf000000 - 0xffffffff for mmconfig For 32bit, mcfg_res->end could be 32bit only (if 64 resources aren't used) So use end - 1 to pass the value in mcfg->end to avoid overflow. We don't need to worry about the e820 path, they are always 64 bit. Reported-by: Pascal Terjan <pterjan@mandriva.com> Bisected-by: Pascal Terjan <pterjan@mandriva.com> Tested-by: Pascal Terjan <pterjan@mandriva.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: stable@kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-05-18x86, apic: introduce io_apic_irq_attrYinghai Lu
according to Ingo, io_apic irq-setup related functions have too many parameters with a repetitive signature. So reduce related funcs to get less params by passing a pointer to a newly defined io_apic_irq_attr structure. v2: io_apic_irq ==> irq_attr triggering ==> trigger v3: add set_io_apic_irq_attr [ Impact: cleanup ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Len Brown <lenb@kernel.org> LKML-Reference: <4A08ACD3.2070401@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-12Merge branch 'x86/apic' into irq/numaIngo Molnar
Merge reason: both topics modify the APIC code but were able to do it in parallel so far. An upcoming patch generates a conflict so merge them to avoid the conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-11x86/pci: update pirq_enable_irq() to setup io apic routingYinghai Lu
So we can set io apic routing only when enabling the device irq. This is advantageous for IRQ descriptor allocation affinity: if we set up the IO-APIC entry later, we have a chance to allocate the IRQ descriptor later and know which device it is on and can set affinity accordingly. [ Impact: standardize/enhance irq-enabling sequence for mptable irqs ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Len Brown <lenb@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <4A01C46E.8000501@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-11x86/pci: add 4 more return parameters to IO_APIC_get_PCI_irq_vector()Yinghai Lu
To prepare those params for pcibios_irq_enable() to call setup_io_apic_routing(). [ Impact: extend function call API to prepare for new functionality ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Len Brown <lenb@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <4A01C406.2040303@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-22x86/PCI: don't bother with root quirks if _CRS is usedYinghai Lu
It will be overwriten later if _CRS is used, so don't bother to set it. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-22x86/PCI: set_pci_bus_resources_arch_default cleanupsYinghai Lu
Rename set_pci_bus_resources_arch_default to x86_pci_root_bus_res_quirks, move the weak version from common.c to i386.c, and before calling, make sure it's a root bus. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-22x86/PCI: Move set_pci_bus_resources_arch_default into arch/x86Matthew Wilcox
Commit 30a18d6c3f1e774de656ebd8ff219d53e2ba4029 introduced a new function to set the PCI bus resources. Unfortunately, neither the author, nor the committers seemed to know that we already have somewhere to do that -- pcibios_fixup_bus(). This patch moves the hook (used only by the K8 code) into x86-specific code where it should have been in the first place. Cc: Yinghai Lu <yinghai.lu@sun.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-22x86/PCI: don't call e820_all_mapped with -1 in the mmconfig caseYinghai Lu
e820_all_mapped need end is (addr + size) instead of (addr + size - 1) Cc: stable@kernel.org Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-04-03x86, PAT: Remove duplicate memtype reserve in pci mmapSuresh Siddha
pci mmap code was doing memtype reserve for a while now. Recently we added memtype tracking in remap_pfn_range, and pci code indirectly calls remap_pfn_range. So, we don't need seperate tracking in pci code anymore. Which means a patch that removes ~50 lines of code :-). Also, recently we found out that the pci tracking is not working as we expect it to work in some cases. Specifically, userlevel X mmap of pci, with some recent version of X, is having a problem with vm_page_prot getting reset. The pci tracking uses vm_page_prot to pass on the protection type from parent to child during fork. a) Parent does a pci mmap b) We look at PAT and get either UC_MINUS or WC mapping for parent c) Store that mapping type in vma vm_page_prot for future use d) This thread does a fork e) Fork results in mmap_ops ->open for the child process f) We get the vm_page_prot from vma and reserve that type for the child process But, between c) and e) above, the vma vm_page_prot is getting reset to zero. This results in PAT reserve failing at the time of fork as in here. http://marc.info/?l=linux-kernel&m=123858163103240&w=2 This cleanup makes the above problem go away as we do not depend on vm_page_prot in our PAT code anymore. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01Merge branch 'linux-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (88 commits) PCI: fix HT MSI mapping fix PCI: don't enable too much HT MSI mapping x86/PCI: make pci=lastbus=255 work when acpi is on PCI: save and restore PCIe 2.0 registers PCI: update fakephp for bus_id removal PCI: fix kernel oops on bridge removal PCI: fix conflict between SR-IOV and config space sizing powerpc/PCI: include pci.h in powerpc MSI implementation PCI Hotplug: schedule fakephp for feature removal PCI Hotplug: rename legacy_fakephp to fakephp PCI Hotplug: restore fakephp interface with complete reimplementation PCI: Introduce /sys/bus/pci/devices/.../rescan PCI: Introduce /sys/bus/pci/devices/.../remove PCI: Introduce /sys/bus/pci/rescan PCI: Introduce pci_rescan_bus() PCI: do not enable bridges more than once PCI: do not initialize bridges more than once PCI: always scan child buses PCI: pci_scan_slot() returns newly found devices PCI: don't scan existing devices ... Fix trivial append-only conflict in Documentation/feature-removal-schedule.txt
2009-03-26x86/PCI: make pci=lastbus=255 work when acpi is onYinghai Lu
Impact: scan more peer root buses even acpi is used Move pci_bios_fixup_peer_bridges out of pci_legacy_init and into pci_subsys_init. This allows pci_bios_fixup_peer_bridges to be called even pci_apci_init is driving PCI initialization. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-24x86, PAT, PCI: Change vma prot in pci_mmap to reflect inherited protPallipadi, Venkatesh
While looking at the issue in the thread: http://marc.info/?l=dri-devel&m=123606627824556&w=2 noticed a bug in pci PAT code and memory type setting. PCI mmap code did not set the proper protection in vma, when it inherited protection in reserve_memtype. This bug only affects the case where there exists a WC mapping before X does an mmap with /proc or /sys pci interface. This will cause X userlevel mmap from /proc or /sysfs to fail on fork. Reported-by: Kevin Winchester <kjwinchester@gmail.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Dave Airlie <airlied@redhat.com> Cc: <stable@kernel.org> LKML-Reference: <20090323190720.GA16831@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-20x86/PCI: host mmconfig detect clean upYinghai Lu
Fix mmconfig detection to not assume a single mmconfig space in the northbridge, paving the way for AMD fam10h + mcp55 CPUs. On those, the MSR has some range, but the mcp55 pci config will have another one. Also helps the mcp55 + io55 case, where every one will have one range. If it is mcp55, exclude the range that is used by CPU MSR, in other words , if the CPU claims busses 0-255, the range in mcp55 is dropped, because CPU HW will not route those ranges to mcp55 mmconfig to handle it. Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20x86/PCI: Detect mmconfig on nVidia MCP55Ed Swierk
Detect and enable memory-mapped PCI configuration space on the nVidia MCP55 southbridge. Tested against 2.6.27.4 on an Arista Networks development board with one MCP55, Coreboot firmware, no ACPI. Signed-off-by: Ed Swierk <eswierk@aristanetworks.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-20PCI/x86: detect host bridge config space size w/o using quirksYinghai Lu
Many host bridges support a 4k config space, so check them directy instead of using quirks to add them. We only need to do this extra check for host bridges at this point, because only host bridges are known to have extended address space without also having a PCI-X/PCI-E caps. Other devices with this property could be done with quirks (if there are any). As a bonus, we can remove the quirks for AMD host bridges with family 10h and 11h since they're not needed any more. With this patch, we can get correct pci cfg size of new Intel CPUs/IOHs with host bridges. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: H. Peter Anvin <hpa@zytor.com> Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Cc: <stable@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-19PCI/x86: format early dump like other PCI outputBjorn Helgaas
Use %02x:%02x.%d rather than %02x:%02x:%02x so PCI addresses look the same as in other parts of the kernel. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-19PCI/x86: make early dump handle multi-function devicesBjorn Helgaas
The early "dump PCI config space" code skips many multi-function devices. This patch fixes that, so it dumps all devices in PCI domain 0. We should not skip the rest of the functions if CLASS_REVISION is 0xffffffff. Often multi-function devices have gaps in the function ID space, e.g., 1c.0 and 1c.2 exist but 1c.1 doesn't. The CLASS_REVISION of the non-existent 1c.1 function will appear to be 0xffffffff. We should only look at the HEADER_TYPE of function zero. Often the "multi-function" is set in function zero, but not in other functions. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-12x86: move a few device initialization objects into .devinit.rodataJan Beulich
Impact: debuggability and micro-optimization Putting whatever is possible into the (final) .rodata section increases the likelihood of catching memory corruption bugs early, and reduces false cache line sharing. Signed-off-by: Jan Beulich <jbeulich@novell.com> LKML-Reference: <49B909A5.76E4.0078.0@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-17x86, apic: remove genapic.hIngo Molnar
Impact: cleanup Remove genapic.h and remove all references to it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05x86, numaq: cleanupsIngo Molnar
Also move xquad_portio over to where it's allocated. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05Merge branch 'x86/urgent' into x86/apicIngo Molnar
Conflicts: arch/x86/mach-default/setup.c Semantic merge: arch/x86/kernel/irqinit_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-29x86: move mach-default/*.h files to asm/Ingo Molnar
We are getting rid of subarchitecture support - move the hook files to asm/. (These are now stale and should be replaced with more explicit runtime mechanisms - but the transition is simpler this way.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-28x86, numaq: consolidate codeIngo Molnar
Move all the NUMAQ subarch definitions into numaq.c. With this it ceases to depend on build-time subarch features. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-27PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDsSeth Heasley
This patch adds the Intel Tigerpoint LPC Controller DeviceIDs. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-13x86 PAT: consolidate old memtype new memtype check into a functionvenkatesh.pallipadi@intel.com
Impact: cleanup Move the new memtype old memtype allowed check to header so that is can be shared by other users. Subsequent patch uses this in pat.c in remap_pfn_range() code path. No functionality change in this patch. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-07x86/PCI: Do not use interrupt links for devices using MSI-XRafael J. Wysocki
pcibios_enable_device() and pcibios_disable_device() don't handle IRQs for devices that have MSI enabled and it should treat the devices with MSI-X enabled in the same way. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07x86/PCI: use dev_printk for PCI bus locality messagesBjorn Helgaas
Since pci_bus has a struct device, use dev_printk directly instead of faking it by hand. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-01-07PCI: x86/visws: use generic INTx swizzle from PCI coreBjorn Helgaas
Use the generic pci_common_swizzle() instead of arch-specific code. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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