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2009-03-02x86 mmiotrace: WARN_ONCE if dis/arming a page failsStuart Bennett
Print a full warning once, if arming or disarming a page fails. Also, if initial arming fails, do not handle the page further. This avoids the possibility of a page failing to arm and then later claiming to have handled any fault on that page. WARN_ONCE added by Pekka Paalanen. Signed-off-by: Stuart Bennett <stuart@freedesktop.org> Signed-off-by: Pekka Paalanen <pq@iki.fi> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02x86: add far read test to testmmiotracePekka Paalanen
Apparently pages far into an ioremapped region might not actually be mapped during ioremap(). Add an optional read test to try to trigger a multiply faulting MMIO access. Also add more messages to the kernel log to help debugging. This patch is based on a patch suggested by Stuart Bennett <stuart@freedesktop.org> who discovered bugs in mmiotrace related to normal kernel space faults. Signed-off-by: Pekka Paalanen <pq@iki.fi> Cc: Stuart Bennett <stuart@freedesktop.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-02x86: count errors in testmmiotrace.koPekka Paalanen
Check the read values against the written values in the MMIO read/write test. This test shows if the given MMIO test area really works as memory, which is a prerequisite for a successful mmiotrace test. Signed-off-by: Pekka Paalanen <pq@iki.fi> Cc: Stuart Bennett <stuart@freedesktop.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-01Merge branch 'x86/urgent' into x86/patIngo Molnar
2009-03-01Revert "gpu/drm, x86, PAT: PAT support for io_mapping_*"Ingo Molnar
This reverts commit 17581ad812a9abb0182260374ef2e52d4a808a64. Sitsofe Wheeler reported that /dev/dri/card0 is MIA on his EeePC 900 and bisected it to this commit. Graphics card is an i915 in an EeePC 900: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 04) ( Most likely the ioremap() of the driver failed and hence the card did not initialize. ) Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com> Bisected-by: Sitsofe Wheeler <sitsofe@yahoo.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-01bootmem, x86: further fixes for arch-specific bootmem wrappingTejun Heo
Impact: fix new breakages introduced by previous fix Commit c132937556f56ee4b831ef4b23f1846e05fde102 tried to clean up bootmem arch wrapper but it wasn't quite correct. Before the commit, the followings were broken. * Low level interface functions prefixed with __ ignored arch preference. * reserve_bootmem(...) can't be mapped into reserve_bootmem_node(NODE_DATA(0)->bdata, ...) because the node is not preference here. The region specified MUST fall into the specified region; otherwise, it will panic. After the commit, * If allocation fails for the arch preferred node, it should fallback to whatever is available. Instead, it simply failed allocation. There are too many internal details to allow generic wrapping and still keep things simple for archs. Plus, all that arch wants is a way to prefer certain node over another. This patch drops the generic wrapping around alloc_bootmem_core() and add alloc_bootmem_core() instead. If necessary, arch can define bootmem_arch_referred_node() macro or function which takes all allocation information and returns the preferred node. bootmem generic code will always try the preferred node first and then fallback to other nodes as usual. Breakages noted and changes reviewed by Johannes Weiner. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org>
2009-02-28x86: remove double copy of show_cpuinfo_core for 32 and 64 bitJaswinder Singh Rajput
Impact: unification show_cpuinfo_core is identical for 32 and 64 bit and can be unified, and CONFIG_X86_HT inherently depends on CONFIG_X86_SMP. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-28x86: i915 needs pgprot_writecombine() and is_io_mapping_possible()Ingo Molnar
Impact: build fix Theodore Ts reported that the i915 driver needs these symbols: ERROR: "pgprot_writecombine" [drivers/gpu/drm/i915/i915.ko] undefined! ERROR: "is_io_mapping_possible" [drivers/gpu/drm/i915/i915.ko] undefined! Reported-by: Theodore Ts'o <tytso@mit.edu> wrote: Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-28x86: signal: introduce helper align_sigframe()Hiroshi Shimamoto
Impact: cleanup Introduce helper align_sigframe() to align stack pointer for signal frame. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-28x86: signal: unify get_sigframe()Hiroshi Shimamoto
Impact: cleanup Unify get_sigframe(). Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-28x86: signal: use 16 bytes boundary for rt_sigframeHiroshi Shimamoto
Impact: cleanup Supporting xsave/xrestore introduces 64 bytes boundary for save_i387_xstate(). 16 bytes boundary is OK for rt_sigframe. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-28x86: signal: intrroduce get_sigframe() and replace get_sigstack()Hiroshi Shimamoto
Impact: cleanup Introduce get_sigframe() like 32-bit to replace get_sigstack(). Move the i387 stuff into get_sigframe(). Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-28x86: signal: add __user annotationHiroshi Shimamoto
Impact: cleanup Add missing __user annotation to the parameter of get_sigframe(). Also change cast type to void __user * of *fpstate. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-27x86, fixmap: unify fixmap.hGustavo F. Padovan
Impact: unification This patch unify fixmap_32.h and fixmap_64.h into fixmap.h. Things that we can't merge now are using CONFIG_X86_{32,64} (e.g.:vsyscall and EFI) Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: prepare fixmap_32.h for unificationGustavo F. Padovan
Impact: cleanup Just prepare fixmap for later mechanic unification. No real modification on code. text data bss dec hex filename 3831152 353188 372736 4557076 458914 vmlinux-32.after 3831152 353188 372736 4557076 458914 vmlinux-32.before Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: prepare fixmap_64.h for unificationGustavo F. Padovan
Impact: cleanup Just prepare fixmap for later mechanic unification. No real modification on code. text data bss dec hex filename 4312362 527192 421924 5261478 5048a6 vmlinux-64.after 4312362 527192 421924 5261478 5048a6 vmlinux-64.before Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: add CONFIG_EFIGustavo F. Padovan
Impact: new fixmap allocation FIX_EFI_IO_MAP_FIRST_PAGE is used only when EFI is enabled. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: add CONFIG_X86_{LOCAL,IO}_APICGustavo F. Padovan
Impact: New fixmap allocations Add CONFIG_X86_{LOCAL,IO}_APIC to enum fixed_address. FIX_APIC_BASE is used only when CONFIG_X86_LOCAL_APIC is enabled and FIX_IO_APIC_BASE_* are used only when CONFIG_X86_IO_APIC is enabled. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: define reserve_top_address for x86_64Gustavo F. Padovan
Impact: new interface (not yet use) Define reserve_top_address for x86_64; only for later x86 integration. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: define FIXADDR_BOOT_* and redefine FIX_ADDR_SIZEGustavo F. Padovan
Impact: new interface, not yet used Now, with these macros, x86_64 code can know where start the permanent and non-permanent fixed mapped address. This patch make these macros equal fixmap_32.h for future x86 integration. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-27x86, fixmap: rename __FIXADDR_SIZE and __FIXADDR_BOOT_SIZEGustavo F. Padovan
Impact: rename Rename __FIXADDR_SIZE to FIXADDR_SIZE and __FIXADDR_BOOT_SIZE to FIXADDR_BOOT_SIZE. Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br> Acked-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-02-26x86: enable DMAR by defaultKyle McMartin
Now that the obvious bugs have been worked out, specifically the iwlagn issue, and the write buffer errata, DMAR should be safe to turn back on by default. (We've had it on since those patches were first written a few weeks ago, without any noticeable bug reports (most have been due to the dma-api debug patchset.)) Signed-off-by: Kyle McMartin <kyle@redhat.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: fix !ACPI build for es7000_32.cIngo Molnar
arch/x86/kernel/apic/es7000_32.c:702: error: 'es7000_acpi_madt_oem_check_cluster' undeclared here (not in a function) Provide a es7000_acpi_madt_oem_check_cluster() definition in the !ACPI case too. Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: apic: simplify secondary CPU wakeup methods, fixIngo Molnar
Impact: build fix init_deasserted is only available on SMP. Make the secondary-wakeup function conditional on SMP. Also clean up the file some. Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: apic: simplify secondary CPU wakeup methodsIngo Molnar
Impact: cleanup - rename apic->wakeup_cpu to apic->wakeup_secondary_cpu, to make it apparent that this is an SMP-only method - handle NULL ->wakeup_secondary_cpus to mean the default INIT wakeup sequence - this allows simplification of the APIC driver templates. Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: remove update_apic from x86_quirks, fixIngo Molnar
Impact: build fix wakeup_secondary_cpu_via_init(), the default platform method for booting a secondary CPU, is always used on UP due to probe_32.c, if CONFIG_X86_LOCAL_APIC is enabled but SMP is off. So provide a UP wrapper inline as well. Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: don't compile vsmp_64 for 32bitYinghai Lu
Impact: cleanup that is only needed when CONFIG_X86_VSMP is defined with 64bit also remove dead code about PCI, because CONFIG_X86_VSMP depends on PCI Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26x86: remove update_apic from x86_quirksYinghai Lu
Impact: cleanup x86_quirks->update_apic() calling looks crazy. so try to remove it: 1. every apic take wakeup_cpu member directly 2. separate es7000_apic to es7000_apic_cluster 3. use uv_wakeup_cpu directly Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-26Merge branches 'x86/apic', 'x86/defconfig', 'x86/memtest', 'x86/mm' and ↵Ingo Molnar
'linus' into x86/core
2009-02-26Merge branches 'x86/urgent' and 'x86/pat' into x86/coreIngo Molnar
Conflicts: arch/x86/include/asm/pat.h
2009-02-26Merge branch 'x86/urgent' into x86/coreIngo Molnar
Conflicts: arch/x86/mach-voyager/voyager_smp.c
2009-02-26gpu/drm, x86, PAT: PAT support for io_mapping_*, export symbols for modulesIngo Molnar
Impact: build fix ERROR: "reserve_io_memtype_wc" [drivers/gpu/drm/i915/i915.ko] undefined! ERROR: "free_io_memtype" [drivers/gpu/drm/i915/i915.ko] undefined! Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25xen: disable interrupts early, as start_kernel expectsJeremy Fitzhardinge
This avoids a lockdep warning from: if (DEBUG_LOCKS_WARN_ON(unlikely(!early_boot_irqs_enabled))) return; in trace_hardirqs_on_caller(); Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Mark McLoughlin <markmc@redhat.com> Cc: Xen-devel <xen-devel@lists.xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25Merge branch 'x86/urgent' into x86/patIngo Molnar
2009-02-25x86: make vmap yell louder when it is used under irqs_disabled()Peter Zijlstra
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25gpu/drm, x86, PAT: PAT support for io_mapping_*Venkatesh Pallipadi
Make io_mapping_create_wc and io_mapping_free go through PAT to make sure that there are no memory type aliases. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Cc: Keith Packard <keithp@keithp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25gpu/drm, x86, PAT: io_mapping_create_wc and resource_size_tVenkatesh Pallipadi
io_mapping_create_wc should take a resource_size_t parameter in place of unsigned long. With unsigned long, there will be no way to map greater than 4GB address in i386/32 bit. On x86, greater than 4GB addresses cannot be mapped on i386 without PAE. Return error for such a case. Patch also adds a structure for io_mapping, that saves the base, size and type on HAVE_ATOMIC_IOMAP archs, that can be used to verify the offset on io_mapping_map calls. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Cc: Keith Packard <keithp@keithp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25gpu/drm, x86, PAT: routine to keep identity map in syncVenkatesh Pallipadi
Add a function to check and keep identity maps in sync, when changing any memory type. One of the follow on patches will also use this routine. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Eric Anholt <eric@anholt.net> Cc: Keith Packard <keithp@keithp.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: add additional (regular) test patternsAndreas Herrmann
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: wipe out test pattern from memoryAndreas Herrmann
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: adapt log messagesAndreas Herrmann
- print test pattern instead of pattern number, - show pattern as stored in memory, - use proper priority flags, - consistent use of u64 throughout the code Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: cleanup memtest functionAndreas Herrmann
Impact: code cleanup Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: introduce array to select memtest patternsAndreas Herrmann
Impact: code cleanup Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: memtest: reuse test patterns when memtest parameter exceeds number of ↵Andreas Herrmann
available patterns Impact: fix unexpected behaviour when pattern number is out of range Current implementation provides 4 patterns for memtest. The code doesn't check whether the memtest parameter value exceeds the maximum pattern number. Instead the memtest code pretends to test with non-existing patterns, e.g. when booting with memtest=10 I've observed the following ... early_memtest: pattern num 10 0000001000 - 0000006000 pattern 0 ... 0000001000 - 0000006000 pattern 1 ... 0000001000 - 0000006000 pattern 2 ... 0000001000 - 0000006000 pattern 3 ... 0000001000 - 0000006000 pattern 4 ... 0000001000 - 0000006000 pattern 5 ... 0000001000 - 0000006000 pattern 6 ... 0000001000 - 0000006000 pattern 7 ... 0000001000 - 0000006000 pattern 8 ... 0000001000 - 0000006000 pattern 9 ... But in fact Linux didn't test anything for patterns > 4 as the default case in memtest() is to leave the function. I suggest to use the memtest parameter as the number of tests to be performed and to re-iterate over all existing patterns. Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86: usercopy: check for total size when deciding non-temporal cutoffIngo Molnar
Impact: make more types of copies non-temporal This change makes the following simple fix: 30d697f: x86: fix performance regression in write() syscall A bit more sophisticated: we check the 'total' number of bytes written to decide whether to copy in a cached or a non-temporal way. This will for example cause the tail (modulo 4096 bytes) chunk of a large write() to be non-temporal too - not just the page-sized chunks. Cc: Salman Qazi <sqazi@google.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25x86, mm: pass in 'total' to __copy_from_user_*nocache()Ingo Molnar
Impact: cleanup, enable future change Add a 'total bytes copied' parameter to __copy_from_user_*nocache(), and update all the callsites. The parameter is not used yet - architecture code can use it to more intelligently decide whether the copy should be cached or non-temporal. Cc: Salman Qazi <sqazi@google.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-25Merge branch 'x86/asm' into x86/mmIngo Molnar
2009-02-25x86: convert cacheflush macros inline functionsTejun Heo
Impact: cleanup Unused macro parameters cause spurious unused variable warnings. Convert all cacheflush macros to inline functions to avoid the warnings and achieve better type checking. Signed-off-by: Tejun Heo <tj@kernel.org>
2009-02-25x86, percpu: fix minor bugs in setup_percpu.cTejun Heo
Recent changes in setup_percpu.c made a now meaningless DBG() statement fail to compile and introduced a comparison-of-different-types warning. Fix them. Compile failure is reported by Ingo Molnar. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Ingo Molnar <mingo@elte.hu>
2009-02-24Merge branch 'x86/core' into x86/mce2H. Peter Anvin
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