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2006-01-11[PATCH] i386/x86-64: make setup_early_printk() usage consistentJan Beulich
The explicit and implicit calls to setup_early_printk() were passing inconsistent arguments. Signed-Off-By: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] i386: Move DOUBLEFAULT config to arch/i386/KconfigAndi Kleen
It has no business being elsewhere and x86-64 doesn't need/want it. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Allow kernel page tables upto the end of memoryAndi Kleen
Previously they would be only allocated before the kernel text at 1MB. This limited the maximum supported memory to 128GB. Now allow the e820 allocator to put them everywhere. Try to put them beyond any DMA zones to avoid filling them up. This should free some GFP_DMA memory compared to earlier kernels. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Use safe_smp_processor_id in MCE handlerAndi Kleen
hard_smp_processor_id would return the local APIC id instead of the Linux processor id. On big systems they are often not identical. safe_smp_processor_id is just a wrapper around it that does the necessary conversions. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Some housekeeping in local APIC codeAndi Kleen
Remove support for obsolete hardware and cleanup. - Remove checks for non integrated APICs - Replace apic_write_around with apic_write. - Remove apic_read_around - Remove APIC version reads used by old workarounds - Remove old workaround for Simics - Fix indentation Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Display meaningful part of filename during BUG()Jan Beulich
When building in a separate objtree, file names produced by BUG() & Co. can get fairly long; printing only the first 50 characters may thus result in (almost) no useful information. The following change makes it so that rather the last 50 characters of the filename get printed. Signed-Off-By: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Reduce screen space needed by stack traceJan Beulich
Especially under Xen, where the console cannot be adjusted to more than 25 lines, it is fairly important that the information displayed during a panic is as compact as possible. Below adjustments work towards that. Signed-Off-By: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Fix get_cmos_time()Jan Beulich
Due to a broken condition, the body of the loop that is intended to wait for the Update-In-Progress bit to get set and then cleared again was never entered; in fact, the entire loop was optimized out by the compiler. Here is a change to fix the condition (and to also move the initialization of locals out of the spin lock protected region). Signed-Off-By: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: No need to export get_cmos_time anymoreAndi Kleen
It was only needed for APM Pointed out by Jan Beulich Cc: jbeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Remove unused AMD K8 C stepping flagAndi Kleen
X86_FEATURE_K8_C was a synthetic Linux CPUID flag that was used for some code optimizations in Opteron C stepping or later. But support for pre C stepping optimizations has been removed, so this isn't needed anymore. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] i386: Move phys_proc_id/early intel workaround to correct function.Andi Kleen
early_cpu_detect only runs on the BP, but this code needs to run on all CPUs. Looks like a mismerge somewhere. Also add a warning comment. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: sparse warning cleanupsStephen Hemminger
Fix some trivial sparse warnings in x86_64 code. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Move NUMA page_to_pfn/pfn_to_page functions out of lineAndi Kleen
Saves about ~18K .text in defconfig There would be more optimization potential, but that's for later. Suggestion originally from Bill Irwin. Fix from Andy Whitcroft. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Remove unused segmentsAndi Kleen
They used to be used by the reboot code, but not anymore. Noticed by Jan Beulich Cc: JBeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: ioapic virtual wire mode fixVivek Goyal
o Currently, during kexec reboot, IOAPIC is re-programmed back to virtual wire mode if there was an i8259 connected to it. This enables getting timer interrupts in second kernel in legacy mode. o After putting into virtual wire mode, IOAPIC delivers the i8259 interrupts to CPU0. This works well for kexec but not for kdump as we might crash on a different CPU and second kernel will not see timer interrupts. o This patch modifies the redirection table entry to deliver the timer interrupts to the cpu we are rebooting (instead of hardcoding to zero). This ensures that second kernel receives timer interrupts even on a non-boot cpu. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_archRavikiran G Thirumalai
Introduce vSMP arch to the kernel. This patch: 1. Adds CONFIG_X86_VSMP 2. Adds machine specific macros for local_irq_disabled, local_irq_enabled and irqs_disabled 3. Writes to the vSMP CTL device to indicate kernel compiled with CONFIG_VSMP Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Signed-off-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Inclusion of ScaleMP vSMP architecture patches - vsmp_alignRavikiran G Thirumalai
vSMP specific alignment patch to 1. Define INTERNODE_CACHE_SHIFT for vSMP 2. Use this for alignment of critical structures 3. Use INTERNODE_CACHE_SHIFT for ARCH_MIN_TASKALIGN, and let the slab align task_struct allocations to the internode cacheline size 4. Introduce and use ARCH_MIN_MMSTRUCT_ALIGN for mm_struct slab allocations. Signed-off-by: Ravikiran Thirumalai <kiran@scalemp.com> Signed-off-by: Shai Fultheim <shai@scalemp.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Make sure BITS_PER_ATOMIC is defined in asm-generic/atomic.hAndi Kleen
Fixes CC fs/nfsctl.o In file included from include2/asm/atomic.h:427, from /home/lsrc/quilt/linux/include/linux/file.h:8, from /home/lsrc/quilt/linux/fs/nfsctl.c:8: /home/lsrc/quilt/linux/include/asm-generic/atomic.h:20:5: warning: "BITS_PER_LONG" is not defined Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: cleanup enter_lazy_tlb()Brian Gerst
Move the #ifdef into the function body. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Memorize location of i8259 for reboots.Eric W. Biederman
Currently we attempt to restore virtual wire mode on reboot, which only works if we can figure out where the i8259 is connected. This is very useful when we are kexec another kernel and likely helpful to an peculiar BIOS that make assumptions about how the system is setup. Since the acpi MADT table does not provide the location where the i8259 is connected we have to look at the hardware to figure it out. Most systems have the i8259 connected the local apic of the cpu so won't be affected but people running Opteron and some serverworks chipsets should be able to use kexec now. In addition this patch removes the hard coded assumption that the io_apic that delivers isa interrups is always known to the kernel as io_apic 0. There does not appear to be anything to guarantee that assumption is true. And From: Vivek Goyal <vgoyal@in.ibm.com> A minor fix to the patch which remembers the location of where i8259 is connected. Now counter i has been replaced by apic. counter i is having some junk value which was leading to non-detection of i8259 connected to IOAPIC. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: allow setting RF in EFLAGSChuck Ebbert
Setting RF (resume flag) allows a debugger to resume execution after a code breakpoint without tripping the breakpoint again. It is reset by the CPU after executing one instruction. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: "invalid operand" -> "invalid opcode"Chuck Ebbert
The manual says Int 6 is "invalid opcode", not "invalid operand". Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Sparse warnings fix.Luiz Fernando Capitulino
Fixes the following sparse warnings: arch/x86_64/kernel/mce_amd.c:321:29: warning: Using plain integer as NULL pointer arch/x86_64/kernel/mce_amd.c:410:41: warning: Using plain integer as NULL pointer Signed-off-by: Luiz Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Remove useless KDB vectorAndi Kleen
It was set as an NMI, but the NMI bit always forces an interrupt to end up at vector 2. So it was never used. Remove. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Don't claim too many vectors for TLB flushingJason Uhlenkott
It looks like the new scalable TLB flush code for x86_64 is claiming one more IRQ vector than it actually uses. Signed-off-by: Jason Uhlenkott <jasonuhl@sgi.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Tell user to enable GART_IOMMU when neededAndi Kleen
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Fix warning in nmi.c on uniprocessor kernelsAndi Kleen
Fix CC arch/x86_64/kernel/nmi.o linux/arch/x86_64/kernel/nmi.c: In function ???check_nmi_watchdog???: linux/arch/x86_64/kernel/nmi.c:155: warning: statement with no effect on Uniprocessor builds. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Allocate PDAs in the local nodeRavikiran G Thirumalai
Patch uses a static PDA array early at boot and reallocates processor PDA with node local memory when kmalloc is ready, just before pda_init. The boot_cpu_pda is needed since the cpu_pda is used even before pda_init for that cpu is called (to set the static per-cpu areas offset table etc) Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Node local pda take 2 -- cpu_pda preparationRavikiran G Thirumalai
Helper patch to change cpu_pda users to use macros to access cpu_pda instead of the cpu_pda[] array. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Early initialization of cpu_to_nodeRavikiran Thirumalai
Patch enables early intialization of cpu_to_node. apicid_to_node is built by reading the SRAT table, from acpi_numa_init with ACPI_NUMA and k8_scan_nodes with K8_NUMA. x86_cpu_to_apicid is built by parsing the ACPI MADT table, from acpi_boot_init. We combine these two tables and setup cpu_to_node. Early intialization helps the static per_cpu_areas in getting pages from correct node. Change since last release: Do not initialize early init_cpu_to_node for faking node cases. Patch tested on TYAN dual core 4P board with K8 only, ACPI_NUMA. Tested on EM64T NUMA. Also tested with numa=off, numa=fake, and running a kernel compiled with NUMA on a regular EM64 2 way SMP. Signed-off-by: Alok N Kataria <alokk@calsoftinc.com> Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Fix up white space in time.cAndi Kleen
No functional changes. And remove one redundant prototype. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Use standard __always_inline in vsyscall.cAndi Kleen
Replacing the old home brewn __force_inline. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] i386: Replace broken serialize_cpu in microcode driver with correct ↵Andi Kleen
sync_core Passing random input values in eax to cpuid is not a good idea because the CPU will GPF for unknown ones. Use the correct x86-64 version that exists for a longer time too. This also adds a memory barrier to prevent the optimizer from reordering. Cc: tigran@veritas.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: On Intel CPUs don't do an additional CPU sync before RDTSCAndi Kleen
RDTSC serialization using cpuid is not needed for Intel platforms. This increases gettimeofday performance. Cc: vojtech@suse.cz Cc: rohit.seth@intel.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Support alternative() in vsyscallsAndi Kleen
The real vsyscall .text addresses are not mapped when the alternative() replacement runs early, so use some black magic to access them using the direct mapping. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Support alternative() with a output argument.Andi Kleen
Needed for follow on patches Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Don't try to synchronize the TSC over CPUs on Intel CPUs at ↵Andi Kleen
boot. They already do this in hardware and the Linux algorithm actually adds errors. Cc: mingo@elte.hu Cc: rohit.seth@intel.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Fix compile error with !CONFIG_COMPATAndi Kleen
cpumask.h wasn't included implicitely into proto.h in this case. Just move it over to smp.h Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: x86_64 write apic id fixVivek Goyal
o Apic id is in most significant 8 bits of APIC_ID register. Current code is trying to write apic id to least significant 8 bits. This patch fixes it. o This fix enables booting uni kdump capture kernel on a cpu with non-zero apic id. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Remove duplicate exportsBrian Gerst
Remove exports that are already exported from the object's source file. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: unexport pci_*_consistentBrian Gerst
These functions are inlines and shouldn't be exported. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Remove unused apic_write_atomicAndi Kleen
This function is never used for x86_64. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Make the cpu_*_maps in kernel/sched.c read mostlyAndi Kleen
They are referred to often so avoid potential false sharing for them. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] i386: make pci_map_single/pci_map_sg warn for zero length.Andi Kleen
As suggested by Linus. This catches driver bugs that could cause corruption on IOMMU architectures. Also I converted the BUGs to out_of_line_bug()s to save a bit of text space. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Enable sound in old style OSS driver for NForce4 CK804Andi Kleen
Just add the missing PCI ID. Cc: perex@suse.cz Cc: tiwai@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Make it clear in machine checks that it's an hardware problemAndi Kleen
Hopefully the users will take the hint. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Clean up copy_*_userAndi Kleen
- Remove optimization for old B stepping Opteron - Make the fast path for copies with a multiple of eight length faster. - Minor instruction rearrangement to hopefully avoid a pipeline stall or two. - Add comment about errata to consider. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Use function pointers to call DMA mapping functionsMuli Ben-Yehuda
AK: I hacked Muli's original patch a lot and there were a lot of changes - all bugs are probably to blame on me now. There were also some changes in the fall back behaviour for swiotlb - in particular it doesn't try to use GFP_DMA now anymore. Also all DMA mapping operations use the same core dma_alloc_coherent code with proper fallbacks now. And various other changes and cleanups. Known problems: iommu=force swiotlb=force together breaks needs more testing. This patch cleans up x86_64's DMA mapping dispatching code. Right now we have three possible IOMMU types: AGP GART, swiotlb and nommu, and in the future we will also have Xen's x86_64 swiotlb and other HW IOMMUs for x86_64. In order to support all of them cleanly, this patch: - introduces a struct dma_mapping_ops with function pointers for each of the DMA mapping operations of gart (AMD HW IOMMU), swiotlb (software IOMMU) and nommu (no IOMMU). - gets rid of: if (swiotlb) return swiotlb_xxx(); - PCI_DMA_BUS_IS_PHYS is now checked against the dma_ops being set This makes swiotlb faster by avoiding double copying in some cases. Signed-Off-By: Muli Ben-Yehuda <mulix@mulix.org> Signed-Off-By: Jon D. Mason <jdmason@us.ibm.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Reject SRAT tables that don't cover all memoryAndi Kleen
Broken BIOS on Iwill 8way systems reports these and it causes the bootmem allocator to crash. Add a sanity check if all the PXMs in the SRAT table cover all memory as reported by e820. If the sanity check fails the SRAT is rejected and the code will fall back to discover the NUMA topology using the K8 northbridge registers when applicable. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11[PATCH] x86_64: Add idle notifiersAndi Kleen
This adds a new notifier chain that is called with IDLE_START when a CPU goes idle and IDLE_END when it goes out of idle. The context can be idle thread or interrupt context. Since we cannot rely on MONITOR/MWAIT existing the idle end check currently has to be done in all interrupt handlers. They were originally inspired by the similar s390 implementation. They have a variety of applications: - They will be needed for CONFIG_NO_IDLE_HZ - They can be used for oprofile to fix up the missing time in idle when performance counters don't tick. - They can be used for better C state management in ACPI - They could be used for microstate accounting. This is just infrastructure so far, no users. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>