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2008-07-10Merge branch 'x86/unify-pci' into x86/coreIngo Molnar
2008-07-10x86: fix visws and vsmp buildIngo Molnar
these two sub-architectures want PCI to be default-on, not default-off. Reported-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86: I/O APIC: Add a 64-bit variation of replace_pin_at_irq()Maciej W. Rozycki
When an interrupt is rerouted to a different I/O APIC pin the relevant entry of the irq_2_pin list should get updated accordingly so that operations are performed on the correct redirection entry. This is already done by the 32-bit variation of the code and here is a complementing 64-bit implementation. Should make someone's decision less tough when merging the two. ;) Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10Revert "x86: fix IO APIC breakage on HP nx6325"Ingo Molnar
This reverts commit 90221a61a71b7ad659d8741cf1e404506b174982. This too was just temporary diagnostics - not needed now that we've got the final fix via: | commit e2079c43861f71b2deb78ee20e247ad954fdd67e | Author: Rafael J. Wysocki <rjw@sisk.pl> | Date: Tue Jul 8 16:12:26 2008 +0200 | | x86: fix C1E && nx6325 stability problem Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10Revert "x86: fix IO APIC breakage on HP nx6325, v2"Ingo Molnar
This reverts commit a74a1cc3df0be89658bc735c8aed80c8392e2c15. This was just temporary diagnostics commit - not needed now that we've got the final fix. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86, AMD IOMMU: clean up Kconfig entryFUJITA Tomonori
AMD_IOMMU should depend on IOMMU_HELPER since they are the IOMMU helper functions. SWIOTLB requires IOMMU_HELPER so declaring that AMD_IOMMU depends on SWIOTLB properly fixes the problems. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86: make e820_end return end_of_ram again for 64bitYinghai Lu
even on 64bit systems with less than 4G RAM, we can now use fixmap to handle acpi SIT near end of ram. change e820_end to e820_end_of_ram again? or e820_ram_pfn? Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86, acpi: merge __acpi_map_tableYinghai Lu
and let 64-bit to fall back to use fixmap too. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-10x86: overmapped fix when 4K pages on tail, 64-bitYinghai Lu
fix phys_pmd_init to make sure not to return bigger value than end. also print out range split:1G/2M/4K in init_memory_mapping(). Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: fix copy_user on x86Vitaly Mayatskikh
Switch copy_user_generic_string(), copy_user_generic_unrolled() and __copy_user_nocache() from custom tail handlers to generic copy_user_tail_handle(). Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: introduce copy_user_handle_tail() routineVitaly Mayatskikh
Introduce generic C routine for handling necessary tail operations after protection fault in copy_*_user on x86. Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09Merge branch 'x86/unify-lib' into x86/coreIngo Molnar
2008-07-09x86: e820 memmap - add checking for NULL early paramCyrill Gorcunov
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: akpm@linux-foundation.org Cc: andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: make e820_end return max ram type only for 32 bitYinghai Lu
to avoid warning from find_low_pfn_range for high pages size etc Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: removing subsys_initcall ordering dependenciesRobert Richter
So far subsys_initcalls has been executed in this order depending on the object order in the Makefile: arch/x86/pci/visws.c:subsys_initcall(pcibios_init); arch/x86/pci/numa.c:subsys_initcall(pci_numa_init); arch/x86/pci/acpi.c:subsys_initcall(pci_acpi_init); arch/x86/pci/legacy.c:subsys_initcall(pci_legacy_init); arch/x86/pci/irq.c:subsys_initcall(pcibios_irq_init); arch/x86/pci/common.c:subsys_initcall(pcibios_init); This patch removes the ordering dependency. There is now only one subsys_initcall function that contains subsystem initialization code with a defined order. Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: visws: renaming pcibios_init()Robert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: coalescing 32 and 64 bitRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: merge: moving mp_bus_to_node.c to amd_bus.cRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: mp_bus_to_node merge: moving code in amd_bus.cRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: creating pci-y for 64 bitRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: changing 64bit orderingRobert Richter
This should be safe since mmconfig*.o and init.o do not contain *initcalls with the same level as in other files. Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: decoupling options for mp_bus_to_node.oRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: whitespace changes onlyRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: removing include dir flagRobert Richter
Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86/pci: Makefile merge: Removing Makefile_*Robert Richter
No functional nor ordering changes here. Signed-off-by: Robert Richter <robert.richter@amd.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09Merge branch 'x86/core' into x86/unify-pciIngo Molnar
2008-07-09x86: build fix for "x86: fix C1E && nx6325 stability problem"Ingo Molnar
fix: arch/x86/kernel/acpi/boot.c: In function ‘dmi_ignore_irq0_timer_override’: arch/x86/kernel/acpi/boot.c:1443: error: implicit declaration of function ‘force_mask_ioapic_irq_2’ Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: fix C1E && nx6325 stability problemRafael J. Wysocki
The problems are that, with the ACPI vs timer overring issue _fixed_, after using the box for some time (between several seconds and 1 hour, at random) processes get very high CPU loads (once I've got X using 107% of the CPU, for example) and the system becomes unresponsive, as though there were interrupts lost or something similar. Andreas Herrman reproduced similar problems: > Ok, now I've reproduced the stability problem. > - Using tip/master, > - reverting e38502eb8aa82314d5ab0eba45f50e6790dadd88 and > - applying your patch from this posting > http://marc.info/?l=linux-kernel&m=121539354224562&w=4 > > Starting X, firefox, gimp, tuxpaint and doing some drawing in tuxpaint > results in a slow system. Drawing is almost not possible anymore -- > Selections of new colors, cursors etc. is performed with huge delay > if it's performed at all. > > BTW, the code sets up timer IRQ as Virtual Wire IRQ: > > Jul 8 14:57:58 kodscha IO-APIC (apicid-pin) 2-22, 2-23 not connected. > Jul 8 14:57:58 kodscha ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 > Jul 8 14:57:58 kodscha ...trying to set up timer as Virtual Wire IRQ... works. > > and both INT0 and INT2 of IOAPIC are masked: > > Jul 8 14:57:58 kodscha NR Dst Mask Trig IRR Pol Stat Dmod Deli Vect: > Jul 8 14:57:58 kodscha 00 000 1 0 0 0 0 0 0 00 > Jul 8 14:57:58 kodscha 01 003 0 0 0 0 0 1 1 31 > Jul 8 14:57:58 kodscha 02 003 1 0 0 0 0 0 0 30 > > I've also seen strange CPU utilization -- with syslog-ng: > > top - 15:33:06 up 35 min, 4 users, load average: 1.70, 0.68, 0.37 > Tasks: 64 total, 4 running, 60 sleeping, 0 stopped, 0 zombie > Cpu0 : 0.0%us,100.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st > Cpu1 : 6.4%us, 87.2%sy, 0.0%ni, 5.8%id, 0.0%wa, 0.6%hi, 0.0%si, 0.0%st > Mem: 895384k total, 283568k used, 611816k free, 35492k buffers > Swap: 1959920k total, 0k used, 1959920k free, 163044k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 4632 root 20 0 17216 800 580 S 104 0.1 0:34.22 syslog-ng > 28505 root 20 0 205m 11m 4024 S 6 1.3 0:21.16 X > 28518 root 20 0 56292 5652 4492 S 1 0.6 0:01.80 fluxbox > 1 root 20 0 3724 608 508 S 0 0.1 0:00.36 init > > So far I have no clue why C1E-idle in conjunction with virtual wire > mode causes this strange behaviour. > > ... and I start to think about the root cause of all this. > > I've performed similar tests under X with the IRQ0/INT0 configuration and > I did not see above symptoms. So lets fall back to the IRQ0/INT0 configuration on this box. This basically restores the dont-use-the-lapic-timer exception mechanism that was unconditional on this box prior commit 8750bf5 ("x86: add C1E aware idle function"). Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: not overmap more than the end of RAM in init_memory_mapping - 64bitYinghai Lu
handle head and tail that are not aligned to big pages (2MB/1GB boundary). with this patch, on system that support gbpages, change: last_map_addr: 1080000000 end: 1078000000 to: last_map_addr: 1078000000 end: 1078000000 Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: make max_pfn cover acpi table below 4gYinghai Lu
When system have 4g less ram installed, and acpi table sit near end of ram, make max_pfn cover them too, so 64bit kernel don't need to mess up fixmap. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: "Suresh Siddha" <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: fix vmemmap printout checkYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Cc: "Nick Piggin" <npiggin@suse.de> Cc: "Mark McLoughlin" <markmc@redhat.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: "Eduardo Habkost" <ehabkost@redhat.com> Cc: "Vegard Nossum" <vegard.nossum@gmail.com> Cc: "Stephen Tweedie" <sct@redhat.com> Cc: "Jeremy Fitzhardinge" <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: introduce page_size_mask for 64bitYinghai Lu
prepare for overmapped patch also printout last_map_addr together with end Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: mark x86_64 as having a working WP.Glauber Costa
Select X86_WP_WORKS_OK for x86_64 too. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge putuser asm functions.Glauber Costa
putuser_32.S and putuser_64.S are merged into putuser.S. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: use macros from asm.h.Glauber Costa
In putuser_32.S and putuser_64.S, replace things like .quad, .long, and explicit references to [r|e]ax for the apropriate macros in asm/asm.h. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: don't use word-size specifiers in putuser files.Glauber Costa
Remove them where unambiguous. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: replace function headers by macros.Glauber Costa
In putuser_64.S, do it the i386 way, and replace the code in beginning and end of functions with macros, since it's always the same thing. Save lines. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: change testing logic in putuser_64.S.Glauber Costa
Instead of operating over a register we need to put back into normal state afterwards (the memory position), just sub from rbx, which is trashed anyway. We can save a few instructions. Also, this is the i386 way. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: pass argument to putuser_64 functions in ax register.Glauber Costa
This is consistent with i386 usage. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: clobber rbx in putuser_64.S.Glauber Costa
Instead of clobbering r8, clobber rbx, which is the i386 way. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: don't save ebx in putuser_32.S.Glauber Costa
Clobber it in the inline asm macros, and let the compiler do this for us. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: merge getuser asm functions.Glauber Costa
getuser_32.S and getuser_64.S are merged into getuser.S. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: use _ASM_PTR instead of explicit word-size pointers.Glauber Costa
Switch .long and .quad with _ASM_PTR in getuser*.S. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: introduce __ASM_REG macro.Glauber Costa
There are situations in which the architecture wants to use the register that represents its word-size, whatever it is. For those, introduce __ASM_REG in asm.h, along with the first users _ASM_AX and _ASM_DX. They have users waiting for it, namely the getuser functions. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: don't use word-size specifiers on getuser_64.Glauber Costa
The instructions access registers, so the size is unambiguous. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: rename threadinfo to TI.Glauber Costa
This is for consistency with i386. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: adapt x86_64 getuser functions.Glauber Costa
Instead of doing a sub after the addition, use the offset directly at the memory operand of the mov instructions. This is the way i386 do. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: don't use word-size specifiers.Glauber Costa
Since the instructions refer to registers, they'll be able to figure it out. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: don't clobber r8 nor use rcx.Glauber Costa
There's really no reason to clobber r8 or pass the address in rcx. We can safely use only two registers (which we already have to touch anyway) to do the job. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-09x86: integrate delay functions.Glauber Costa
delay_32.c, delay_64.c are now equal, and are integrated into delay.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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