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2011-05-22KVM: MMU: Add unlikely() annotations to walk_addr_generic()Avi Kivity
walk_addr_generic() is a hot path and is also hard for the cpu to predict - some of the parameters (fetch_fault in particular) vary wildly from invocation to invocation. Add unlikely() annotations where appropriate; all walk failures are considered unlikely, as are cases where we have to mark the accessed or dirty bit, as they are slow paths both in kvm and on real processors. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Use opcode::execute for PUSHF/POPF (9C/9D)Takuya Yoshikawa
For this, em_pushf/popf() are introduced. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Use opcode::execute for PUSHA/POPA (60/61)Takuya Yoshikawa
For this, emulate_pusha/popa() are converted to em_pusha/popa(). Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Use opcode::execute for POP reg (58-5F)Takuya Yoshikawa
In addition, the RET emulation is changed to call em_pop() to remove the pop_instruction label. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Use opcode::execute for Group 1, CMPS and SCASTakuya Yoshikawa
The following instructions are changed to use opcode::execute. Group 1 (80-83) ADD (00-05), OR (08-0D), ADC (10-15), SBB (18-1D), AND (20-25), SUB (28-2D), XOR (30-35), CMP (38-3D) CMPS (A6-A7), SCAS (AE-AF) The last two do the same as CMP in the emulator, so em_cmp() is used. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: MMU: Optimize guest page table walkTakuya Yoshikawa
This patch optimizes the guest page table walk by using get_user() instead of copy_from_user(). With this patch applied, paging64_walk_addr_generic() has become about 0.5us to 1.0us faster on my Phenom II machine with NPT on. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: SVM: Get rid of x86_intercept_map::validAvi Kivity
By reserving 0 as an invalid x86_intercept_stage, we no longer need to store a valid flag in x86_intercept_map. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Use opcode::execute for 0F 01 opcodeAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Don't force #UD for 0F 01 /5Avi Kivity
While it isn't defined, no need to force a #UD. If it becomes defined in the future this can cause wierd problems for the guest. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: move 0F 01 sub-opcodes into their own functionsAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: fix const value warning on i386 in svm insn RAX checkRandy Dunlap
arch/x86/kvm/emulate.c:2598: warning: integer constant is too large for 'long' type Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: avoid calling wbinvd() macroClemens Noss
Commit 0b56652e33c72092956c651ab6ceb9f0ad081153 fails to build: CC [M] arch/x86/kvm/emulate.o arch/x86/kvm/emulate.c: In function 'x86_emulate_insn': arch/x86/kvm/emulate.c:4095:25: error: macro "wbinvd" passed 1 arguments, but takes just 0 arch/x86/kvm/emulate.c:4095:3: warning: statement with no effect make[2]: *** [arch/x86/kvm/emulate.o] Error 1 make[1]: *** [arch/x86/kvm] Error 2 make: *** [arch/x86] Error 2 Work around this for now. Signed-off-by: Clemens Noss <cnoss@gmx.de> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: MMU: Make cmpxchg_gpte aware of nesting tooRoedel, Joerg
This patch makes the cmpxchg_gpte() function aware of the difference between l1-gfns and l2-gfns when nested virtualization is in use. This fixes a potential data-corruption problem in the l1-guest and makes the code work correct (at least as correct as the hardware which is emulated in this code) again. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: drop x86_emulate_ctxt::vcpuAvi Kivity
No longer used. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: Avoid using x86_emulate_ctxt.vcpuAvi Kivity
We can use container_of() instead. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: add new ->wbinvd() callbackAvi Kivity
Instead of calling kvm_emulate_wbinvd() directly. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: add ->fix_hypercall() callbackAvi Kivity
Artificial, but needed to remove direct calls to KVM. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: add new ->halt() callbackAvi Kivity
Instead of reaching into vcpu internals. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: make emulate_invlpg() an emulator callbackAvi Kivity
Removing direct calls to KVM. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: emulate CLTS internallyAvi Kivity
Avoid using ctxt->vcpu; we can do everything with ->get_cr() and ->set_cr(). A side effect is that we no longer activate the fpu on emulated CLTS; but that should be very rare. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: Replace calls to is_pae() and is_paging with ->get_cr()Avi Kivity
Avoid use of ctxt->vcpu. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: drop use of is_long_mode()Avi Kivity
Requires ctxt->vcpu, which is to be abolished. Replace with open calls to get_msr(). Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: add and use new callbacks set_idt(), set_gdt()Avi Kivity
Replacing direct calls to realmode_lgdt(), realmode_lidt(). Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: avoid using ctxt->vcpu in check_perm() callbacksAvi Kivity
Unneeded for register access. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: drop vcpu argument from intercept callbackAvi Kivity
Making the emulator caller agnostic. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: drop vcpu argument from cr/dr/cpl/msr callbacksAvi Kivity
Making the emulator caller agnostic. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22KVM: x86 emulator: drop vcpu argument from segment/gdt/idt callbacksAvi Kivity
Making the emulator caller agnostic. [Takuya Yoshikawa: fix typo leading to LDT failures] Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-05-22x86, apic: Make apic drivers staticSuresh Siddha
Apic probe now looks at the apic drivers listed in the .apicdrivers section. Remove apic_probe[] and make each apic driver static. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.341718626@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22x86, apic: Clean up bigsmp apic selection codeSuresh Siddha
Make generic_bigsmp_probe() return struct apic *. This will avoid exporting apic_bigsmp, which will be consistent with others. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.252703851@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22x86, apic: Use .apicdrivers section for the apic drivers listSuresh Siddha
This will eliminate the need for apic_probe[], as the probing now will happen based on the apic drivers order in the .apcidrivers section. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.164277071@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22x86, apic: Introduce .apicdrivers section to find the list of apic driversSuresh Siddha
This will pave the way for each apic driver to be self-contained and eliminate the need for apic_probe[]. Order in which apic drivers are listed in the .apicdrivers section is important, as this determines the apic probe order. And this is enforced by the ordering of apic driver files in the Makefile and the macros apic_driver()/apic_drivers(). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.068775085@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-22Merge branch 'topic/asoc' into for-linusTakashi Iwai
2011-05-22Merge branch 'flushing' into for-linusJames Bottomley
2011-05-21x86: Eliminate various 'set but not used' warningsGustavo F. Padovan
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi> Cc: Joerg Roedel <joerg.roedel@amd.com> (supporter:AMD IOMMU (AMD-VI)) Cc: iommu@lists.linux-foundation.org (open list:AMD IOMMU (AMD-VI)) Link: http://lkml.kernel.org/r/1305918786-7239-3-git-send-email-padovan@profusion.mobi Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-21x86/PCI: derive pcibios_last_bus from ACPI MCFGJan Beulich
On various newer Intel systems the PCI bus(ses) the non-core devices live on aren't getting announced by ACPI except through the bus range covered by mmconfig. At least the i7core-edac driver depends on these devices getting detected. Mauro, could you check whether with this change the Xeon 55xx hack in that driver can go away altogether, and with it the bogus exporting of pcibios_scan_specific_bus()? Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Aristeu Sergio <arozansk@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-05-21x86, SMEP: Fix section mismatch warningsFenghua Yu
Fix these kernel compilation warnings: WARNING: arch/x86/built-in.o(.cpuinit.text+0x1e07): Section mismatch ... WARNING: arch/x86/built-in.o(.cpuinit.text+0x1b10): Section mismatch ... introduced by: de5397ad5b9a: x86, cpu: Enable/disable Supervisor Mode Execution Protection Change disable_smep from __initdata to __cpuinitdata. Change setup_smep() from __init to __cpuinit. Reported-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Cc: Asit K Mallick <asit.k.mallick@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: http://lkml.kernel.org/r/1305930797-11409-1-git-send-email-fenghua.yu@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (45 commits) crypto: caam - add support for sha512 variants of existing AEAD algorithms crypto: caam - remove unused authkeylen from caam_ctx crypto: caam - fix decryption shared vs. non-shared key setting crypto: caam - platform_bus_type migration crypto: aesni-intel - fix aesni build on i386 crypto: aesni-intel - Merge with fpu.ko crypto: mv_cesa - make count_sgs() null-pointer proof crypto: mv_cesa - copy remaining bytes to SRAM only when needed crypto: mv_cesa - move digest state initialisation to a better place crypto: mv_cesa - fill inner/outer IV fields only in HMAC case crypto: mv_cesa - refactor copy_src_to_buf() crypto: mv_cesa - no need to save digest state after the last chunk crypto: mv_cesa - print a warning when registration of AES algos fail crypto: mv_cesa - drop this call to mv_hash_final from mv_hash_finup crypto: mv_cesa - the descriptor pointer register needs to be set just once crypto: mv_cesa - use ablkcipher_request_cast instead of the manual container_of crypto: caam - fix printk recursion for long error texts crypto: caam - remove unused keylen from session context hwrng: amd - enable AMD hw rnd driver for Maple PPC boards hwrng: amd - manage resource allocation ...
2011-05-20xen: fix compile without CONFIG_XEN_DEBUG_FSJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2011-05-20powerpc: Fix 32-bit SMP buildJosh Boyer
Commit 69e3cea8d5fd526 ("powerpc/smp: Make start_secondary_resume available to all CPU variants") introduced start_secondary_resume to misc_32.S, however it uses a 64-bit instruction which is not valid on 32-bit platforms. Use 'stw' instead. Reported-by: Richard Cochran <richardcochran@gmail.com> Tested-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-20ARM: 6915/1: SAMSUNG: Depend on IRQ_GENERIC_CHIPMark Brown
The generic chip infrastructure has had a Kconfig symbol added so we need to select that for the kernel to link now we're using the generic IRQ chip infrastructure. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6902/1: perf: Remove erroneous check on active_eventsMark Rutland
When initialising a PMU, there is a check to protect against races with other CPUs filling all of the available event slots. Since armpmu_add checks that an event can be scheduled, we do not need to do this at initialisation time. Furthermore the current code is broken because it assumes that atomic_inc_not_zero will unconditionally increment active_counts and then tries to decrement it again on failure. This patch removes the broken, redundant code. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6899/1: fix the note about dcache lazy flushing for SMP systemssaeed bishara
Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Saeed Bishara <saeed@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6933/1: SPEAR6xx: Rename spear600_defconfig as spear6xx_defconfigviresh kumar
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6934/1: SPEAr6xx: Rework Kconfig for single image solutionviresh kumar
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6932/1: SPEAr3xx: Replace defconfigs with single unified defconfigRyan Mallon
We only need one defconfig for SPEAr3xx now since we can build all three boards into one kernel. Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6931/1: SPEAr3xx: Rework KConfig to allow all boards to be compiled inRyan Mallon
Now that all three SPEAr3xx platforms can be built into one kernel, rework KConfig to allow this. Move everything into one KConfig file while we are here. Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6929/1: SPEAr3xx: Append spear3** with global device structuresviresh kumar
Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6930/1: SPEAr3xx: Rework pmx_dev code to remove conflictsRyan Mallon
Prefix the pmx_devs to remove naming conflicts between the three SPEAr3xx platforms. Also make pmx_driver static to each platform and rework the init code to pass the devices rather than export the pmx_driver structure. Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6935/1: SPEAR3xx: Rename register/irq defines to remove naming conflictsRyan Mallon
Prefix register and irq defintions to remove naming conflicts between the three SPEAr3xx platforms. Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-05-20ARM: 6928/1: SPEAr3xx: Make local shirq structures staticRyan Mallon
Several structures in arch/arm/mach-spear3xx are not marked static like they should be. Fix this. Reviewed-by: Stanley Miao <stanley.miao@windriver.com> Signed-off-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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