summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel
Commit message (Collapse)AuthorAgeFilesLines
* Merge branch 'x86-kbuild-for-linus' of ↵Linus Torvalds2009-06-107-538/+438
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-kbuild-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (46 commits) x86, boot: add new generated files to the appropriate .gitignore files x86, boot: correct the calculation of ZO_INIT_SIZE x86-64: align __PHYSICAL_START, remove __KERNEL_ALIGN x86, boot: correct sanity checks in boot/compressed/misc.c x86: add extension fields for bootloader type and version x86, defconfig: update kernel position parameters x86, defconfig: update to current, no material changes x86: make CONFIG_RELOCATABLE the default x86: default CONFIG_PHYSICAL_START and CONFIG_PHYSICAL_ALIGN to 16 MB x86: document new bzImage fields x86, boot: make kernel_alignment adjustable; new bzImage fields x86, boot: remove dead code from boot/compressed/head_*.S x86, boot: use LOAD_PHYSICAL_ADDR on 64 bits x86, boot: make symbols from the main vmlinux available x86, boot: determine compressed code offset at compile time x86, boot: use appropriate rep string for move and clear x86, boot: zero EFLAGS on 32 bits x86, boot: set up the decompression stack as early as possible x86, boot: straighten out ranges to copy/zero in compressed/head*.S x86, boot: stylistic cleanups for boot/compressed/head_64.S ... Fixed trivial conflict in arch/x86/configs/x86_64_defconfig manually
| * x86: add extension fields for bootloader type and versionH. Peter Anvin2009-05-111-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A long ago, in days of yore, it all began with a god named Thor. There were vikings and boats and some plans for a Linux kernel header. Unfortunately, a single 8-bit field was used for bootloader type and version. This has generally worked without *too* much pain, but we're getting close to flat running out of ID fields. Add extension fields for both type and version. The type will be extended if it the old field is 0xE; the version is a simple MSB extension. Keep /proc/sys/kernel/bootloader_type containing (type << 4) + (ver & 0xf) for backwards compatiblity, but also add /proc/sys/kernel/bootloader_version which contains the full version number. [ Impact: new feature to support more bootloaders ] Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * x86, boot: make kernel_alignment adjustable; new bzImage fieldsH. Peter Anvin2009-05-112-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the kernel_alignment field adjustable; this allows us to set it to a large value (intended to be 16 MB to avoid ZONE_DMA contention, memory holes and other weirdness) while a smart bootloader can still force a loading at a lesser alignment if absolutely necessary. Also export pref_address (preferred loading address, corresponding to the link-time address) and init_size, the total amount of linear memory the kernel will require during initialization. [ Impact: allows better kernel placement, gives bootloader more info ] Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * x86, vmlinux.lds: fix relocatable symbolsIngo Molnar2009-04-291-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | __init_begin/_end symbols should be inside sections as well, otherwise the relocatable kernel gets confused when freeing init sections in the wrong place. [ Impact: fix bootup crash ] Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <20090429105056.GA28720@uranus.ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: add copyrightIngo Molnar2009-04-291-1/+2
| | | | | | | | | | | | | | | | Acked-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-2-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify remaining partsSam Ravnborg2009-04-293-55/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32 bit: - explicit page align .bss - move ALING() out of .brk output section - discard *(.eh_frame) 64 bit: - move ALIGN() out of .bss output section - move ALIGN() out of .brk output section - use a dedicated section to define _end [ Impact: unify and fix section alignments in linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-13-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify percpuSam Ravnborg2009-04-293-32/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 32 bit: - move __init_end outside the .bss output section It really did not belong in there [ Impact: 64-bit: cleanup, 32-bit: refactor linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-12-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify .exit.* and .init.ramfsSam Ravnborg2009-04-293-42/+20
| | | | | | | | | | | | | | | | | | | | [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-11-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify parainstructionsSam Ravnborg2009-04-293-36/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32 bit: - increase alignment from 4 to 8 for .parainstructions - increase alignment from 4 to 8 for .altinstructions 64 bit: - move ALIGN() outside output section for .altinstructions None of the above should result in any functional change. [ Impact: refactor and unify linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-10-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify first part of initdataSam Ravnborg2009-04-293-119/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32-bit: - Move definition of __init_begin outside output_section because it covers more than one section - Move ALIGN() for end-of-section inside .smp_locks output section. Same effect but the intent is better documented that we need both start and end aligned. 64-bit: - Move ALIGN() outside output section in .init.setup - Deleted unused __smp_alt_* symbols None of the above should result in any functional change. [ Impact: refactor and unify linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-9-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: move vsyscall output sectionsSam Ravnborg2009-04-292-68/+71
| | | | | | | | | | | | | | | | | | | | [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-8-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify data output sectionsSam Ravnborg2009-04-293-65/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 64 bit the following functional changes are introduced: - .data.page_aligned has moved - .data.cacheline_aligned has moved - .data.read_mostly has moved - ALIGN() moved out of output section for .data.cacheline_aligned - ALIGN() moved out of output section for .data.page_aligned Notice that 32 bit and 64 bit has different location of _edata. .data_nosave is 32 bit only as 64 bit is special due to PERCPU. [ Impact: 32-bit: cleanup, 64-bit: use 32-bit linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-7-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify exception tableSam Ravnborg2009-04-293-20/+10
| | | | | | | | | | | | | | | | | | | | [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-6-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify .text output sectionsSam Ravnborg2009-04-294-51/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 32 bit x86 had a dedicated .text.head output section, whereas 64 bit had it all in a single output section. In the unified version the dedicated .text.head output section was kept to have full control over the head code. 32 bit: - Moved definition of _stext to the linker script. The definition is located _after_ .text.page_aligned as this is what 32 bit did before. The ALIGN(8) was introduced so we hit the exact same address (on the tested config) before and after the move. I assume that it is a bug that _stext did not cover the .text.page_aligned section - if this is true it can be fixed in a follow-up patch (and the ugly ALIGN() can be dropped). [ Impact: 64-bit: cleanup, 32-bit: use the 64-bit linker script ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-5-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify start/end of SECTIONSSam Ravnborg2009-04-293-18/+14
| | | | | | | | | | | | | | | | | | | | [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-4-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify PHDRSSam Ravnborg2009-04-293-16/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PHDRS are not equal for the two - so use ifdefs to cover up for that. On the assumption that they may become equal the ifdef is inside the PHDRS definiton. [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-3-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, vmlinux.lds: unify header/footerSam Ravnborg2009-04-293-79/+77
| | | | | | | | | | | | | | | | | | | | | | | | | | Merge everything except PHDRS and SECTIONS into vmlinux.lds.S. [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-2-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: beautify vmlinux_32.lds.SSam Ravnborg2009-04-291-176/+200
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Beautify vmlinux_32.lds.S: - Use tabs for indent - Located curly braces like in C code - Rearranged a few comments To see actual differences use "git diff -b" which ignore 'whitespace' changes. The beautification is done to prepare a unification of the _32 and _64 variants of the linker scripts. [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <1240991249-27117-1-git-send-email-sam@ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: beautify vmlinux_64.lds.SSam Ravnborg2009-04-271-205/+243
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Beautify vmlinux_64.lds.S: - Use tabs for indent - Located curly braces like in C code - Rearranged a few comments There is no functional changes in this patch The beautification is done to prepare a unification of the _32 and the _64 variants of the linker scripts. [ Impact: cleanup ] Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Tim Abbott <tabbott@MIT.EDU> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <20090426210742.GA3464@uranus.ravnborg.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'irq-for-linus' of ↵Linus Torvalds2009-06-1021-987/+892
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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() ...
| * | x86, apic: Fix dummy apic read operation together with broken MP handlingCyrill Gorcunov2009-06-072-4/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingo Molnar reported that read_apic is buggy novadays: [ 0.000000] Using APIC driver default [ 0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs [ 0.000000] Local APIC disabled by BIOS -- you can enable it with "lapic" [ 0.000000] APIC: disable apic facility [ 0.000000] ------------[ cut here ]------------ [ 0.000000] WARNING: at arch/x86/kernel/apic/apic.c:254 native_apic_read_dummy+0x2d/0x3b() [ 0.000000] Hardware name: HP OmniBook PC Indeed we still rely on apic->read operation for SMP compiled kernel. And instead of disfigure the SMP code with #ifdef we allow to call apic->read. To capture any unexpected results we check for apic->read being called for sane reason via WARN_ON_ONCE but(!) instead of OR we should use AND logical operation (thanks Yinghai for spotting the root of the problem). Along with that we could be have bad MP table and we are to fix it that way no SMP started and no complains about BIOS bug if apic was just disabled via command line. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <20090607124840.GD4547@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, apic: Restore irqs on fail pathsJiri Slaby2009-06-021-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lapic_resume forgets to restore interrupts on fail paths. Fix that. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <1243497289-18591-1-git-send-email-jirislaby@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: H. Peter Anvin <hpa@zytor.com>
| * | x86: Print real IOAPIC version for x86-64Naga Chumbalkar2009-06-022-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the fact that the IOAPIC version number in the x86_64 code path always gets assigned to 0, instead of the correct value. Before the patch: (from "dmesg" output): ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 8, version 0, address 0xfec00000, GSI 0-23 <--- After the patch: ACPI: IOAPIC (id[0x08] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23 <--- History: io_apic_get_version() was compiled out of the x86_64 code path in the commit f2c2cca3acef8b253a36381d9b469ad4fb08563a: Author: Andi Kleen <ak@suse.de> Date: Tue Sep 26 10:52:37 2006 +0200 [PATCH] Remove APIC version/cpu capability mpparse checking/printing ACPI went to great trouble to get the APIC version and CPU capabilities of different CPUs before passing them to the mpparser. But all that data was used was to print it out. Actually it even faked some data based on the boot cpu, not on the actual CPU being booted. Remove all this code because it's not needed. Cc: len.brown@intel.com At the time, the IOAPIC version number was deliberately not printed in the x86_64 code path. However, after the x86 and x86_64 files were merged, the net result is that the IOAPIC version is printed incorrectly in the x86_64 code path. The patch below provides a fix. I have tested it with acpi, and with acpi=off, and did not see any problems. Signed-off-by: Naga Chumbalkar <nagananda.chumbalkar@hp.com> Acked-by: Yinghai Lu <yhlu.kernel@gmail.com> LKML-Reference: <20090416014230.4885.94926.sendpatchset@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu> *************************
| * | Merge branch 'x86/cpufeature' into irq/numaIngo Molnar2009-06-011-5/+12
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: irq/numa didnt build because this commit: 2759c32: x86: don't call read_apic_id if !cpu_has_apic Had a dependency on x86/cpufeature changes. Pull in that (small) branch to fix the dependency. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: clean up and fix setup_clear/force_cpu_cap handlingYinghai Lu2009-05-111-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_force_cpu_cap() only have one user (Xen guest code), but it should not reuse cleared_cpu_cpus, otherwise it will have problems on SMP. Need to have a separate cpu_cpus_set array too, for forced-on flags, beyond the forced-off flags. Also need to setup handling before all cpus caps are combined. [ Impact: fix the forced-set CPU feature flag logic ] Cc: H. Peter Anvin <hpa@linux.intel.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Merge branch 'linus' into irq/numaIngo Molnar2009-06-0113-27/+65
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/mips/sibyte/bcm1480/irq.c arch/mips/sibyte/sb1250/irq.c Merge reason: we gathered a few conflicts plus update to latest upstream fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86, io-apic: Don't mark pin_programmed earlyYinghai Lu2009-05-191-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Peter bisected that: | commit b9c61b70075c87a8612624736faf4a2de5b1ed30 | Date: Wed May 6 10:10:06 2009 -0700 | | x86/pci: update pirq_enable_irq() to setup io apic routing | | So we can set io apic routing only when enabling the device irq. wrecked his opteron box, ata1 interrupts fail to get through. ata1 is using irq 11: [ 1.451839] sata_svw 0000:01:0e.0: version 2.3 [ 1.456333] sata_svw 0000:01:0e.0: PCI INT A -> GSI 11 (level, low) -> IRQ 11 [ 1.463639] scsi0 : sata_svw [ 1.466949] scsi1 : sata_svw [ 1.470022] scsi2 : sata_svw [ 1.473090] scsi3 : sata_svw [ 1.476112] ata1: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe000 irq 11 [ 1.483490] ata2: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe100 irq 11 [ 1.490870] ata3: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe200 irq 11 [ 1.498247] ata4: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe300 irq 11 that pin is overlapped with pin with legacy ones. We should not set bits in pin_programmed here, so that those bit could be set later via io_apic_set_pci_routing(). [ Impact: fix boot hang on certain systems ] Reported-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org> Tested-by: Peter Zijlstra <peterz@infradead.org> Cc: Jack Steiner <steiner@sgi.com> LKML-Reference: <4A119990.9020606@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86, irq: don't call mp_config_acpi_gsi() if update_mptable is not enabledYinghai Lu2009-05-182-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Len expressed concern that the update_mptable feature has side-effects on the ACPI code. Make it sure explicitly that the code only ever gets called if the (default disabled) update_mptable boot quirk option is disabled. [ Impact: isolate the update_mptable feature from ACPI code more ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Len Brown <lenb@kernel.org> LKML-Reference: <4A0DC832.5090200@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86, irq: update_mptable needs pci_routeirqYinghai Lu2009-05-181-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To get all device irq routing and to save them. This is basically an implicit pci=routeirq enablement if (and on if) the update_mptable boot option (which is off by default) has been specified. [ Impact: extend the update_mptable boot opion's scope ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> LKML-Reference: <4A0DB7B4.4060702@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86: don't call read_apic_id if !cpu_has_apicYinghai Lu2009-05-184-5/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | should not call that if apic is disabled. [ Impact: fix crash on certain UP configs ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> LKML-Reference: <4A09CCBB.2000306@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86, apic: introduce io_apic_irq_attrYinghai Lu2009-05-182-28/+37
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | x86: read apic ID in the !acpi_lapic caseYinghai Lu2009-05-122-24/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ed found that on 32-bit, boot_cpu_physical_apicid is not read right, when the mptable is broken. Interestingly, actually three paths use/set it: 1. acpi: at that time that is already read from reg 2. mptable: only read from mptable 3. no madt, and no mptable, that use default apic id 0 for 64-bit, -1 for 32-bit so we could read the apic id for the 2/3 path. We trust the hardware register more than we trust a BIOS data structure (the mptable). We can also avoid the double set_fixmap() when acpi_lapic is used, and also need to move cpu_has_apic earlier and call apic_disable(). Also when need to update the apic id, we'd better read and set the apic version as well - so that quirks are applied precisely. v2: make path 3 with 64bit, use -1 as apic id, so could read it later. v3: fix whitespace problem pointed out by Ed Swierk v5: fix boot crash [ Impact: get correct apic id for bsp other than acpi path ] Reported-by: Ed Swierk <eswierk@aristanetworks.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <49FC85A9.2070702@kernel.org> [ v4: sanity-check in the ACPI case too ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | Merge branch 'x86/apic' into irq/numaIngo Molnar2009-05-1213-64/+109
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | | | x86: apic: Fixmap apic address even if apic disabledCyrill Gorcunov2009-05-111-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case if apic were disabled by boot option we still need read_apic operation. So fixmap a fake apic area if needed. [ Impact: fix boot crash ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: yinghai@kernel.org Cc: eswierk@aristanetworks.com LKML-Reference: <20090511134140.GH4624@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: display extended apic registers with print_local_APIC and cpu_debug codeAndreas Herrmann2009-05-113-3/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both print_local_APIC (used when apic=debug kernel param is set) and cpu_debug code missed support for some extended APIC registers that I'd like to see. This adds support to show: - extended APIC feature register - extended APIC control register - extended LVT registers [ Impact: print more debug info ] Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Cc: Jaswinder Singh Rajput <jaswinder@kernel.org> Cc: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090508162350.GO29045@alberich.amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: read apic ID in the !acpi_lapic caseYinghai Lu2009-05-111-10/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ed found that on 32-bit, boot_cpu_physical_apicid is not read right, when the mptable is broken. Interestingly, actually three paths use/set it: 1. acpi: at that time that is already read from reg 2. mptable: only read from mptable 3. no madt, and no mptable, that use default apic id 0 for 64-bit, -1 for 32-bit so we could read the apic id for the 2/3 path. We trust the hardware register more than we trust a BIOS data structure (the mptable). We can also avoid the double set_fixmap() when acpi_lapic is used, and also need to move cpu_has_apic earlier and call apic_disable(). Also when need to update the apic id, we'd better read and set the apic version as well - so that quirks are applied precisely. v2: make path 3 with 64bit, use -1 as apic id, so could read it later. v3: fix whitespace problem pointed out by Ed Swierk [ Impact: get correct apic id for bsp other than acpi path ] Reported-by: Ed Swierk <eswierk@aristanetworks.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <49FC85A9.2070702@kernel.org> [ v4: sanity-check in the ACPI case too ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: apic: Check rev 3 fadt correctly for physical_apic bitYinghai Lu2009-05-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix fadt version checking FADT2_REVISION_ID has value 3 aka rev 3 FADT. So need to use >= instead of >, as other places in the code do. [ Impact: extend scope of APIC boot quirk ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | Merge commit 'v2.6.30-rc5' into x86/apicIngo Molnar2009-05-1123-73/+121
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge reason: this branch was on a .30-rc2 base - sync it up with all the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | x86: uv - prevent NULL dereference in uv_system_init()Cyrill Gorcunov2009-05-031-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We may reach NULL dereference oops if kmalloc failed. Prevent it with explicit BUG_ON. [ Impact: more controlled assert in 'impossible' scenario ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090501202511.GE4633@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | x86: uv io-apic - use BUILD_BUG_ON instead of BUG_ONCyrill Gorcunov2009-05-031-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The expression is known to be true/false at compilation time so we're allowed to use build-time instead of run-time check. Also align 'entry' items assignment. [ Impact: shrink kernel a bit, cleanup ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090502093956.GB4791@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | x86, apic: use pr_ macroCyrill Gorcunov2009-05-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace recenly appeared printk with pr_ macro (the file already use a lot of them). [ Impact: cleanup ] Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <20090501195425.GB4633@lenovo> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86/pci: update pirq_enable_irq() to setup io apic routingYinghai Lu2009-05-111-76/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | | | x86/acpi: move setup io apic routing out of CONFIG_ACPI scopeYinghai Lu2009-05-111-61/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So we could set io apic routing when ACPI is not enabled. [ Impact: prepare for new functionality ] 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: <4A01C422.5070400@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86/pci: add 4 more return parameters to IO_APIC_get_PCI_irq_vector()Yinghai Lu2009-05-111-48/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| * | | | | | x86/acpi: move pin_programmed bit map to io_apic.cYinghai Lu2009-05-112-17/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prepare to call setup_io_apic_routing() in pcibios_irq_enable() also remove not needed member apic_id. [ Impact: clean up, prepare for future change ] 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: <4A01C3DD.3050104@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86/acpi: call mp_config_acpi_gsi() in mp_register_gsi()Yinghai Lu2009-05-111-26/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch to call mp_config_acpi_gsi() from the ACPI IRQ registration code never got mainline because there were open discussions about it. This call is needed to properly update the kernel's copy of the mptable, when the update_mptable boot parameter is needed. Now that the dust has settled with the APIC unification, and since there were no objections when the patch was re-submitted, try this again. [ Impact: fix the update_mptable boot parameter ] 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: <4A01C387.7090103@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86: fix alloc_mptable()Yinghai Lu2009-05-111-16/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the conditions when we stop updating the mptable due to running out of slots. [ Impact: fix memory corruption / non-working update_mptable boot parameter ] 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: <4A01C3BB.1000609@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86/acpi: remove irq-compression trick on 32-bitYinghai Lu2009-05-111-58/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We already have a per cpu vector on 32-bit via recent changes, and don't need this trick any more (which trick obfuscates the real GSI mappings and which only triggers on larger systems to begin with): On 3 ioapic system (24 per ioapic) before patch I got: ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71 IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 64 Mode:1 Active:1) pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 64 ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67 IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 65 Mode:1 Active:1) pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65 ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66 IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1) pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65 IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 67 Mode:1 Active:1) pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67 ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64 IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 68 Mode:1 Active:1) pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68 pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67 pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68 pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65 pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 67 pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 68 pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 65 after the patch we get: ACPI: PCI Interrupt Link [ILSB] enabled at IRQ 71 IOAPIC[2]: Set routing entry (10-23 -> 0xa9 -> IRQ 71 Mode:1 Active:1) pci 0000:80:01.1: PCI INT A -> Link[ILSB] -> GSI 71 (level, low) -> IRQ 71 ACPI: PCI Interrupt Link [LE5B] enabled at IRQ 67 IOAPIC[2]: Set routing entry (10-19 -> 0xb1 -> IRQ 67 Mode:1 Active:1) pci 0000:83:00.0: PCI INT B -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67 ACPI: PCI Interrupt Link [LE5A] enabled at IRQ 66 IOAPIC[2]: Set routing entry (10-18 -> 0xb9 -> IRQ 66 Mode:1 Active:1) pci 0000:83:00.1: PCI INT A -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 ACPI: PCI Interrupt Link [LE5D] enabled at IRQ 65 IOAPIC[2]: Set routing entry (10-17 -> 0xc1 -> IRQ 65 Mode:1 Active:1) pci 0000:84:00.0: PCI INT B -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65 ACPI: PCI Interrupt Link [LE5C] enabled at IRQ 64 IOAPIC[2]: Set routing entry (10-16 -> 0xc9 -> IRQ 64 Mode:1 Active:1) pci 0000:84:00.1: PCI INT A -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64 pci 0000:87:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 pci 0000:87:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65 pci 0000:88:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64 pci 0000:88:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67 pci 0000:8b:00.0: PCI INT B -> Link[LE5A] -> GSI 66 (level, low) -> IRQ 66 pci 0000:8b:00.1: PCI INT A -> Link[LE5D] -> GSI 65 (level, low) -> IRQ 65 pci 0000:8c:00.0: PCI INT B -> Link[LE5C] -> GSI 64 (level, low) -> IRQ 64 pci 0000:8c:00.1: PCI INT A -> Link[LE5B] -> GSI 67 (level, low) -> IRQ 67 As it can be seen that GSIs now get mapped lineary. [ Impact: simplify irq number mapping on bigger 32-bit systems ] 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: <4A01C35C.7060207@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | Merge branch 'x86/apic' into irq/numaIngo Molnar2009-05-0114-569/+442
| |\ \ \ \ \ \ | | |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/apic/io_apic.c Merge reason: non-trivial interaction between ongoing work in io_apic.c and the NUMA migration feature in the irq tree. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | x86: Use dmi check in apic_is_clustered() on 64-bit to mark the TSC unstableYinghai Lu2009-04-271-27/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We will have systems with 2 and more sockets 8cores/2thread, but we treat them as multi chassis - while they could have a stable TSC domain. Use DMI check instead. [ Impact: do not turn possibly stable TSCs off incorrectly ] Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Ravikiran Thirumalai <kiran@scalex86.org> LKML-Reference: <49F5532A.5000802@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
OpenPOWER on IntegriCloud