summaryrefslogtreecommitdiffstats
path: root/arch/x86
AgeCommit message (Collapse)Author
2011-08-29x86: Add xadd helper macroJeremy Fitzhardinge
Add a common xadd implementation. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-29x86, cmpxchg: Unify cmpxchg into cmpxchg.hJeremy Fitzhardinge
Everything that's actually common between 32 and 64-bit is moved into cmpxchg.h. xchg/cmpxchg will fail with a link error if they're passed an unsupported size (which includes 64-bit args on 32-bit systems). Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-29x86, cmpxchg: Move 64-bit set64_bit() to match 32-bitJeremy Fitzhardinge
Reduce arbitrary differences between 32 and 64 bits. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-29x86, cmpxchg: Move 32-bit __cmpxchg_wrong_size to match 64 bit.Jeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-29x86, cmpxchg: <linux/alternative.h> has LOCK_PREFIXJeremy Fitzhardinge
Not <linux/bitops.h>. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Link: http://lkml.kernel.org/r/4E5BCC40.3030501@goop.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-29Merge 3.1-rc4 into staging-nextGreg Kroah-Hartman
This resolves a conflict with: drivers/staging/brcm80211/brcmsmac/types.h Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-26All Arch: remove linkage for sys_nfsservctl system callNeilBrown
The nfsservctl system call is now gone, so we should remove all linkage for it. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-26x86/mrst: Add platform data for Max3110 devicesFeng Tang
Those info will be used when spi controller driver setup max3110 as a slave device Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-26sfi: table irq 0xFF means 'no interrupt'Kirill A. Shutemov
According to the SFI specification irq number 0xFF means device has no interrupt or interrupt attached via GPIO. Currently, we don't handle this special case and set irq field in *_board_info structs to 255. It leads to confusion in some drivers. Accelerometer driver tries to register interrupt 255, fails and prints "Cannot get IRQ" to dmesg. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-25Staging: hv: vmbus: Retry vmbus_post_msg() before giving upK. Y. Srinivasan
The function hv_post_msg() can fail because of transient resource conditions. It may be useful to retry the operation. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-25x86-32: Fix boot with CONFIG_X86_INVD_BUGAndy Lutomirski
entry_32.S contained a hardcoded alternative instruction entry, and the format changed in commit 59e97e4d6fbc ("x86: Make alternative instruction pointers relative"). Replace the hardcoded entry with the altinstruction_entry macro. This fixes the 32-bit boot with CONFIG_X86_INVD_BUG=y. Reported-and-tested-by: Arnaud Lacombe <lacombar@gmail.com> Signed-off-by: Andy Lutomirski <luto@mit.edu> Cc: Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-25mtrr: fix UP breakage caused during switch to stop_machineTejun Heo
While removing custom rendezvous code and switching to stop_machine, commit 192d8857427d ("x86, mtrr: use stop_machine APIs for doing MTRR rendezvous") completely dropped mtrr setting code on !CONFIG_SMP breaking MTRR settting on UP. Fix it by removing the incorrect CONFIG_SMP. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Anders Eriksson <aeriksson@fastmail.fm> Tested-and-acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-24x86-64, unistd: Remove bogus __IGNORE_getcpuAndy Lutomirski
The change: commit fce8dc06423d6fb2709469dc5c55b04e09c1d126 Author: Andy Lutomirski <luto@mit.edu> Date: Wed Aug 10 11:15:31 2011 -0400 x86-64: Wire up getcpu syscall added getcpu as a real syscall, so we shouldn't ignore it any more. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/b4cb60ef45db3a675a0e2b9d51bcb022b0a9ab9c.1314195481.git.luto@mit.edu Reported-by: H.J. Lu <hjl.tools@gmail.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-24xen: use non-tracing preempt in xen_clocksource_read()Jeremy Fitzhardinge
The tracing code used sched_clock() to get tracing timestamps, which ends up calling xen_clocksource_read(). xen_clocksource_read() must disable preemption, but if preemption tracing is enabled, this results in infinite recursion. I've only noticed this when boot-time tracing tests are enabled, but it seems like a generic bug. It looks like it would also affect kvm_clocksource_read(). Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Avi Kivity <avi@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com>
2011-08-23Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86-32, vdso: On system call restart after SYSENTER, use int $0x80 x86, UV: Remove UV delay in starting slave cpus x86, olpc: Wait for last byte of EC command to be accepted
2011-08-23x86-32, vdso: On system call restart after SYSENTER, use int $0x80H. Peter Anvin
When we enter a 32-bit system call via SYSENTER or SYSCALL, we shuffle the arguments to match the int $0x80 calling convention. This was probably a design mistake, but it's what it is now. This causes errors if the system call as to be restarted. For SYSENTER, we have to invoke the instruction from the vdso as the return address is hardcoded. Accordingly, we can simply replace the jump in the vdso with an int $0x80 instruction and use the slower entry point for a post-restart. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/r/CA%2B55aFztZ=r5wa0x26KJQxvZOaQq8s2v3u50wCyJcA-Sc4g8gQ@mail.gmail.com Cc: <stable@kernel.org>
2011-08-23x86, mm, trivial: Remove unnecessary get_order() in free_thread_info()Zhao Jin
Because THREAD_SIZE is defined as PAGE_SIZE << THREAD_ORDER on x86, the call of get_order(THREAD_SIZE) can be replaced with THREAD_ORDER. Signed-off-by: Zhao Jin <cronozhj@gmail.com> Link: http://lkml.kernel.org/r/4E4FB5A9.700@gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-22x86, cleanup: Remove unneeded version.h include from arch/x86/Jesper Juhl
It was pointed out by 'make versioncheck' that the include of linux/version.h is not needed in arch/x86/mm/mmio-mod.c . This patch removes it. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1108012305570.31999@swampdragon.chaosbits.net Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-22x86, cpu: Add cpufeature flag for PCIDsArun Thomas
This patch add a flag for Process-Context Identifiers (PCIDs) aka Address Space Identifiers (ASIDs) aka Tagged TLB support. Signed-off-by: Arun Thomas <arun.thomas@gmail.com> Link: http://lkml.kernel.org/r/1313782943-3898-1-git-send-email-arun.thomas@gmail.com Acked-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-22Merge branch 'stable/bug.fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/tracing: Fix tracing config option properly xen: Do not enable PV IPIs when vector callback not present xen/x86: replace order-based range checking of M2P table by linear one xen: xen-selfballoon.c needs more header files
2011-08-22xen/tracing: Fix tracing config option properlyJeremy Fitzhardinge
Steven Rostedt says we should use CONFIG_EVENT_TRACING. Cc:Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-08-22xen: Do not enable PV IPIs when vector callback not presentStefano Stabellini
Fix regression for HVM case on older (<4.1.1) hypervisors caused by commit 99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Date: Thu Dec 2 17:55:10 2010 +0000 xen: PV on HVM: support PV spinlocks and IPIs This change replaced the SMP operations with event based handlers without taking into account that this only works when the hypervisor supports callback vectors. This causes unexplainable hangs early on boot for HVM guests with more than one CPU. BugLink: http://bugs.launchpad.net/bugs/791850 CC: stable@kernel.org Signed-off-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Tested-and-Reported-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-08-19x86: jump_label: arch_jump_label_text_poke_early: add missing __initKevin Winchester
arch_jump_label_text_poke_early calls text_poke_early, which is an __init function. Thus arch_jump_label_text_poke_early should be the same. Signed-off-by: Kevin Winchester <kjwinchester@gmail.com> Cc: jbaron@redhat.com Cc: tglx@linutronix.de Cc: mingo@redhat.com Cc: hpa@zytor.com Cc: x86@kernel.org Link: http://lkml.kernel.org/r/1313539478-30303-1-git-send-email-kjwinchester@gmail.com [ Use __init_or_module instead of __init ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-08-19Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: OF: Don't crash when bridge parent is NULL. PCI: export pcie_bus_configure_settings symbol PCI: code and comments cleanup PCI: make cardbus-bridge resources optional PCI: make SRIOV resources optional PCI : ability to relocate assigned pci-resources PCI: honor child buses add_size in hot plug configuration PCI: Set PCI-E Max Payload Size on fabric
2011-08-18Merge branch 'perf/urgent' into perf/coreIngo Molnar
Merge reason: add the latest fixes. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-17xen/x86: replace order-based range checking of M2P table by linear oneJan Beulich
The order-based approach is not only less efficient (requiring a shift and a compare, typical generated code looking like this mov eax, [machine_to_phys_order] mov ecx, eax shr ebx, cl test ebx, ebx jnz ... whereas a direct check requires just a compare, like in cmp ebx, [machine_to_phys_nr] jae ... ), but also slightly dangerous in the 32-on-64 case - the element address calculation can wrap if the next power of two boundary is sufficiently far away from the actual upper limit of the table, and hence can result in user space addresses being accessed (with it being unknown what may actually be mapped there). Additionally, the elimination of the mistaken use of fls() here (should have been __fls()) fixes a latent issue on x86-64 that would trigger if the code was run on a system with memory extending beyond the 44-bit boundary. CC: stable@kernel.org Signed-off-by: Jan Beulich <jbeulich@novell.com> [v1: Based on Jeremy's feedback] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-08-16oprofile, x86: Fix overflow and warning (commit 1d12d35)Robert Richter
Following fixes for: 1d12d35 oprofile, x86: Convert memory allocation to static array Fix potential buffer overflow. Fix the following warning: arch/x86/oprofile/op_model_ppro.c: In function ‘ppro_check_ctrs’: arch/x86/oprofile/op_model_ppro.c:143: warning: label ‘out’ defined but not used Cc: Maarten Lankhorst <m.b.lankhorst@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Signed-off-by: Robert Richter <robert.richter@amd.com>
2011-08-16Merge branch 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
* 'kvm-updates/3.1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: uses TASKSTATS, depends on NET KVM: fix TASK_DELAY_ACCT kconfig warning
2011-08-16KVM: uses TASKSTATS, depends on NETRandy Dunlap
CONFIG_TASKSTATS just had a change to use netlink, including a change to "depends on NET". Since "select" does not follow dependencies, KVM also needs to depend on NET to prevent build errors when CONFIG_NET is not enabled. Sample of the reported "undefined reference" build errors: taskstats.c:(.text+0x8f686): undefined reference to `nla_put' taskstats.c:(.text+0x8f721): undefined reference to `nla_reserve' taskstats.c:(.text+0x8f8fb): undefined reference to `init_net' taskstats.c:(.text+0x8f905): undefined reference to `netlink_unicast' taskstats.c:(.text+0x8f934): undefined reference to `kfree_skb' taskstats.c:(.text+0x8f9e9): undefined reference to `skb_clone' taskstats.c:(.text+0x90060): undefined reference to `__alloc_skb' taskstats.c:(.text+0x901e9): undefined reference to `skb_put' taskstats.c:(.init.text+0x4665): undefined reference to `genl_register_family' taskstats.c:(.init.text+0x4699): undefined reference to `genl_register_ops' taskstats.c:(.init.text+0x4710): undefined reference to `genl_unregister_ops' taskstats.c:(.init.text+0x471c): undefined reference to `genl_unregister_family' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-08-16x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.cH. Peter Anvin
arch/x86/mm/fault.c now depend on having the symbol VSYSCALL_START defined, which is best handled by including <asm/fixmap.h> (it isn't unreasonable we may want other fixed addresses in this file in the future, and so it is cleaner than including <asm/vsyscall.h> directly.) This addresses an x86-64 allnoconfig build failure. On other configurations it was masked by an indirect path: <asm/smp.h> -> <asm/apic.h> -> <asm/fixmap.h> -> <asm/vsyscall.h> ... however, the first such include is conditional on CONFIG_X86_LOCAL_APIC. Originally-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/CA%2B55aFxsOMc9=p02r8-QhJ=h=Mqwckk4_Pnx9LQt5%2BfqMp_exQ@mail.gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-15x86: fix mm/fault.c buildRandy Dunlap
arch/x86/mm/fault.c needs to include asm/vsyscall.h to fix a build error: arch/x86/mm/fault.c: In function '__bad_area_nosemaphore': arch/x86/mm/fault.c:728: error: 'VSYSCALL_START' undeclared (first use in this function) Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-14perf, x86: Avoid kfree() in CPU_STARTINGPeter Zijlstra
On -rt kfree() can schedule, but CPU_STARTING is before the CPU is fully up and running. These are contradictory, so avoid it. Instead push the kfree() to CPU_ONLINE where we're free to schedule. Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/n/tip-kwd4j6ayld5thrscvaxgjquv@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-12Merge branch 'x86-vdso-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-tip * 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-tip: x86-64: Rework vsyscall emulation and add vsyscall= parameter x86-64: Wire up getcpu syscall x86: Remove unnecessary compile flag tweaks for vsyscall code x86-64: Add vsyscall:emulate_vsyscall trace event x86-64: Add user_64bit_mode paravirt op x86-64, xen: Enable the vvar mapping x86-64: Work around gold bug 13023 x86-64: Move the "user" vsyscall segment out of the data segment. x86-64: Pad vDSO to a page boundary
2011-08-11Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf symbols: Check '/tmp/perf-' symbol file ownership perf sched: Usage leftover from trace -> script rename perf sched: Do not delete session object prematurely perf tools: Check $HOME/.perfconfig ownership perf, x86: Add model 45 SandyBridge support perf tools: Add support to install perf python extension perf tools: do not look at ./config for configuration perf tools: Make clean leaves some files perf lock: Dropping unsupported ':r' modifier perf probe: Fix coredump introduced by probe module option jump label: Reduce the cycle count by changing the link order perf report: Use ui__warning in some more places perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tables perf evlist: Introduce 'disable' method trace events: Update version number reference to new 3.x scheme for EVENT_POWER_TRACING_DEPRECATED perf buildid-cache: Zero out buffer of filenames when adding/removing buildid
2011-08-10x86-64: Rework vsyscall emulation and add vsyscall= parameterAndy Lutomirski
There are three choices: vsyscall=native: Vsyscalls are native code that issues the corresponding syscalls. vsyscall=emulate (default): Vsyscalls are emulated by instruction fault traps, tested in the bad_area path. The actual contents of the vsyscall page is the same as the vsyscall=native case except that it's marked NX. This way programs that make assumptions about what the code in the page does will not be confused when they read that code. vsyscall=none: Trying to execute a vsyscall will segfault. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/8449fb3abf89851fd6b2260972666a6f82542284.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10x86-64: Wire up getcpu syscallAndy Lutomirski
getcpu is available as a vdso entry and an emulated vsyscall. Programs that for some reason don't want to use the vdso should still be able to call getcpu without relying on the slow emulated vsyscall. It costs almost nothing to expose it as a real syscall. We also need this for the following patch in vsyscall=native mode. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/6b19f55bdb06a0c32c2fa6dba9b6f222e1fde999.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10x86: Remove unnecessary compile flag tweaks for vsyscall codeAndy Lutomirski
As of commit 98d0ac38ca7b1b7a552c9a2359174ff84decb600 Author: Andy Lutomirski <luto@mit.edu> Date: Thu Jul 14 06:47:22 2011 -0400 x86-64: Move vread_tsc and vread_hpet into the vDSO user code no longer directly calls into code in arch/x86/kernel/, so we don't need compile flag hacks to make it safe. All vdso code is in the vdso directory now. Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/835cd05a4c7740544d09723d6ba48f4406f9826c.1312988155.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-10crypto: sha1 - SSSE3 based SHA1 implementation for x86-64Mathias Krause
This is an assembler implementation of the SHA1 algorithm using the Supplemental SSE3 (SSSE3) instructions or, when available, the Advanced Vector Extensions (AVX). Testing with the tcrypt module shows the raw hash performance is up to 2.3 times faster than the C implementation, using 8k data blocks on a Core 2 Duo T5500. For the smalest data set (16 byte) it is still 25% faster. Since this implementation uses SSE/YMM registers it cannot safely be used in every situation, e.g. while an IRQ interrupts a kernel thread. The implementation falls back to the generic SHA1 variant, if using the SSE/YMM registers is not possible. With this algorithm I was able to increase the throughput of a single IPsec link from 344 Mbit/s to 464 Mbit/s on a Core 2 Quad CPU using the SSSE3 variant -- a speedup of +34.8%. Saving and restoring SSE/YMM state might make the actual throughput fluctuate when there are FPU intensive userland applications running. For example, meassuring the performance using iperf2 directly on the machine under test gives wobbling numbers because iperf2 uses the FPU for each packet to check if the reporting interval has expired (in the above test I got min/max/avg: 402/484/464 MBit/s). Using this algorithm on a IPsec gateway gives much more reasonable and stable numbers, albeit not as high as in the directly connected case. Here is the result from an RFC 2544 test run with a EXFO Packet Blazer FTB-8510: frame size sha1-generic sha1-ssse3 delta 64 byte 37.5 MBit/s 37.5 MBit/s 0.0% 128 byte 56.3 MBit/s 62.5 MBit/s +11.0% 256 byte 87.5 MBit/s 100.0 MBit/s +14.3% 512 byte 131.3 MBit/s 150.0 MBit/s +14.2% 1024 byte 162.5 MBit/s 193.8 MBit/s +19.3% 1280 byte 175.0 MBit/s 212.5 MBit/s +21.4% 1420 byte 175.0 MBit/s 218.7 MBit/s +25.0% 1518 byte 150.0 MBit/s 181.2 MBit/s +20.8% The throughput for the largest frame size is lower than for the previous size because the IP packets need to be fragmented in this case to make there way through the IPsec tunnel. Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Maxim Locktyukhin <maxim.locktyukhin@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2011-08-10x86, amd: Include elf.h explicitly, prepare the code for the module.h splitStephen Rothwell
When the moduleu.h splitting tree is merged to the latest tip:x86/cpu tree, the x86_64 allmodconfig build fails like this: arch/x86/kernel/cpu/amd.c: In function 'bsp_init_amd': arch/x86/kernel/cpu/amd.c:437:3: error: 'va_align' undeclared (first use in this function) arch/x86/kernel/cpu/amd.c:438:23: error: 'ALIGN_VA_32' undeclared (first use in this function) arch/x86/kernel/cpu/amd.c:438:37: error: 'ALIGN_VA_64' undeclared (first use in this function) This is caused by the module.h split up intreacting with commit dfb09f9b7ab0 ("x86, amd: Avoid cache aliasing penalties on AMD family 15h") from the tip:x86/cpu tree. I have added the following patch for today (this, or something similar, could be applied to the tip tree directly - the export.h include below was added by the module.h splitup). So include elf.h to use va_align and remove this implicit dependency on module.h doing it for us. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Link: http://lkml.kernel.org/r/20110810114956.238d66772883636e3040d29f@canb.auug.org.au Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-09Revert "xen/debug: WARN_ON when identity PFN has no _PAGE_IOMAP flag set."Konrad Rzeszutek Wilk
We don' use it anymore and there are more false positives. This reverts commit fc25151d9ac7d809239fe68de0a1490b504bb94a. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-08-09perf, x86: Add model 45 SandyBridge supportYouquan Song
Add support to Romely-EP SandyBridge. Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: Anhua Xu <anhua.xu@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1312264895-2010-1-git-send-email-youquan.song@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-06Merge branch 'stable/bug.fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/trace: Fix compile error when CONFIG_XEN_PRIVILEGED_GUEST is not set xen: Fix misleading WARN message at xen_release_chunk xen: Fix printk() format in xen/setup.c xen/tracing: it looks like we wanted CONFIG_FTRACE xen/self-balloon: Add dependency on tmem. xen/balloon: Fix compile errors - missing header files. xen/grant: Fix compile warning. xen/pciback: remove duplicated #include
2011-08-06x86-32, amd: Move va_align definition to unbreak 32-bit buildBorislav Petkov
hpa reported that dfb09f9b7ab03fd367740e541a5caf830ed56726 breaks 32-bit builds with the following error message: /home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:437: undefined reference to `va_align' /home/hpa/kernel/linux-tip.cpu/arch/x86/kernel/cpu/amd.c:436: undefined reference to `va_align' This is due to the fact that va_align is a global in a 64-bit only compilation unit. Move it to mmap.c where it is visible to both subarches. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/1312633899-1131-1-git-send-email-bp@amd64.org Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2011-08-05x86, UV: Remove UV delay in starting slave cpusJack Steiner
Delete the 10 msec delay between the INIT and SIPI when starting slave cpus. I can find no requirement for this delay. BIOS also has similar code sequences without the delay. Removing the delay reduces boot time by 40 sec. Every bit helps. Signed-off-by: Jack Steiner <steiner@sgi.com> Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/20110805140900.GA6774@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-05x86, olpc: Wait for last byte of EC command to be acceptedPaul Fox
When executing EC commands, only waiting when there are still more bytes to write is usually fine. However, if the system suspends very quickly after a call to olpc_ec_cmd(), the last data byte may not yet be transferred to the EC, and the command will not complete. This solves a bug where the SCI wakeup mask was not correctly written when going into suspend. It means that sometimes, on XO-1.5 (but not XO-1), the devices that were marked as wakeup sources can't wake up the system. e.g. you ask for wifi wakeups, suspend, but then incoming wifi frames don't wake up the system as they should. Signed-off-by: Paul Fox <pgf@laptop.org> Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Andres Salomon <dilinger@queued.net> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-08-05x86, amd: Move BSP code to cpu_dev helperBorislav Petkov
Move code which is run once on the BSP during boot into the cpu_dev helper. [ hpa: removed bogus cpu_has -> static_cpu_has conversion ] Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/20110805180409.GC26217@aftab Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-05x86: Add a BSP cpu_dev helperBorislav Petkov
Add a function ptr to struct cpu_dev which is destined to be run only once on the BSP during boot. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/20110805180116.GB26217@aftab Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-05x86, amd: Avoid cache aliasing penalties on AMD family 15hBorislav Petkov
This patch provides performance tuning for the "Bulldozer" CPU. With its shared instruction cache there is a chance of generating an excessive number of cache cross-invalidates when running specific workloads on the cores of a compute module. This excessive amount of cross-invalidations can be observed if cache lines backed by shared physical memory alias in bits [14:12] of their virtual addresses, as those bits are used for the index generation. This patch addresses the issue by clearing all the bits in the [14:12] slice of the file mapping's virtual address at generation time, thus forcing those bits the same for all mappings of a single shared library across processes and, in doing so, avoids instruction cache aliases. It also adds the command line option "align_va_addr=(32|64|on|off)" with which virtual address alignment can be enabled for 32-bit or 64-bit x86 individually, or both, or be completely disabled. This change leaves virtual region address allocation on other families and/or vendors unaffected. Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Link: http://lkml.kernel.org/r/1312550110-24160-2-git-send-email-bp@amd64.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2011-08-05Merge commit 'v3.0' into x86/cpuH. Peter Anvin
2011-08-05xen/trace: Fix compile error when CONFIG_XEN_PRIVILEGED_GUEST is not setKonrad Rzeszutek Wilk
with CONFIG_XEN and CONFIG_FTRACE set we get this: arch/x86/xen/trace.c:22: error: ‘__HYPERVISOR_console_io’ undeclared here (not in a function) arch/x86/xen/trace.c:22: error: array index in initializer not of integer type arch/x86/xen/trace.c:22: error: (near initialization for ‘xen_hypercall_names’) arch/x86/xen/trace.c:23: error: ‘__HYPERVISOR_physdev_op_compat’ undeclared here (not in a function) Issue was that the definitions of __HYPERVISOR were not pulled if CONFIG_XEN_PRIVILEGED_GUEST was not set. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-03-16 13:51:13 +0000