- 04 1月, 2012 4 次提交
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由 Eric Dumazet 提交于
It appears about all functions in arch/x86/lib/atomic64_cx8_32.S are wrong in case cmpxchg8b must be restarted, because LOCK_PREFIX macro defines a label "1" clashing with other local labels : 1: some_instructions LOCK_PREFIX cmpxchg8b (%ebp) jne 1b / jumps to beginning of LOCK_PREFIX ! A possible fix is to use a magic label "672" in LOCK_PREFIX asm definition, similar to the "671" one we defined in LOCK_PREFIX_HERE. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Acked-by: NJan Beulich <JBeulich@suse.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/1325608540.2320.103.camel@edumazet-HP-Compaq-6005-Pro-SFF-PCSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jan Beulich 提交于
Just like the per-CPU ones they had several problems/shortcomings: Only the first memory operand was mentioned in the asm() operands, and the 2x64-bit version didn't have a memory clobber while the 2x32-bit one did. The former allowed the compiler to not recognize the need to re-load the data in case it had it cached in some register, while the latter was overly destructive. The types of the local copies of the old and new values were incorrect (the types of the pointed-to variables should be used here, to make sure the respective old/new variable types are compatible). The __dummy/__junk variables were pointless, given that local copies of the inputs already existed (and can hence be used for discarded outputs). The 32-bit variant of cmpxchg_double_local() referenced cmpxchg16b_local(). At once also: - change the return value type to what it really is: 'bool' - unify 32- and 64-bit variants - abstract out the common part of the 'normal' and 'local' variants Signed-off-by: NJan Beulich <jbeulich@suse.com> Cc: Christoph Lameter <cl@linux.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/4F01F12A020000780006A19B@nat28.tlf.novell.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 Al Viro 提交于
both callers of device_get_devnode() are only interested in lower 16bits and nobody tries to return anything wider than 16bit anyway. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 27 12月, 2011 36 次提交
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由 Avi Kivity 提交于
Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
RDPMC is only privileged if CR4.PCE=0. check_rdpmc() already implements this, so all we need to do is drop the Priv flag. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Provide a CPUID leaf that describes the emulated PMU. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Intercept RDPMC and forward it to the PMU emulation code. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Intercept RDPMC and forward it to the PMU emulation code. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Add a helper function that emulates the RDPMC instruction operation. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Use perf_events to emulate an architectural PMU, version 2. Based on PMU version 1 emulation by Avi Kivity. [avi: adjust for cpuid.c] [jan: fix anonymous field initialization for older gcc] Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Needed to deliver performance monitoring interrupts. Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
Group 9: 0F C7 Rename em_grp9() to em_cmpxchg8b() and register it. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
Group 4: FE Group 5: FF Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
Group 1A: 8F Register em_pop() directly and remove em_grp1a(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Drop bsp_vcpu pointer from kvm struct since its only use is incorrect anyway. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Jan Kiszka 提交于
Move the test for KVM_PIT_FLAGS_HPET_LEGACY into create_pit_timer instead of replicating it on the caller site. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Jan Kiszka 提交于
Works so far by change, but it is not guaranteed to stay like this. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Avi Kivity 提交于
PMU virtualization needs to talk to Intel-specific bits of perf; these are only available when CPU_SUP_INTEL=y. Fixes arch/x86/built-in.o: In function `atomic_switch_perf_msrs': vmx.c:(.text+0x6b1d4): undefined reference to `perf_guest_get_msrs' Reported-by: NIngo Molnar <mingo@elte.hu> Reported-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Sasha Levin 提交于
Switch to using memdup_user when possible. This makes code more smaller and compact, and prevents errors. Signed-off-by: NSasha Levin <levinsasha928@gmail.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sasha Levin 提交于
Switch to kmemdup() in two places to shorten the code and avoid possible bugs. Signed-off-by: NSasha Levin <levinsasha928@gmail.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
This was probably copy&pasted from the cr0 case, but it's unneeded here. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
freed_pages is never evaluated, so remove it as well as the return code kvm_mmu_remove_some_alloc_mmu_pages so far delivered to its only user. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Alex,Shi 提交于
percpu_xxx funcs are duplicated with this_cpu_xxx funcs, so replace them for further code clean up. And in preempt safe scenario, __this_cpu_xxx funcs has a bit better performance since __this_cpu_xxx has no redundant preempt_disable() Signed-off-by: NAlex Shi <alex.shi@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
inline audit function and little cleanup Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
The unsync code should be stable now, maybe it is the time to remove this parameter to cleanup the code a little bit Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Move the mmu code in kvm_arch_vcpu_init() to kvm_mmu_create() Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
KVM_EXIT_HYPERCALL is not used anymore, so remove the code Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
The tracepoint is only used to audit mmu code, it should not be exposed to user, let us replace it with jump-label. Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sasha Levin 提交于
This patch cleans and simplifies kvm_dev_ioctl_get_supported_cpuid by using a table instead of duplicating code as Avi suggested. This patch also fixes a bug where kvm_dev_ioctl_get_supported_cpuid would return -E2BIG when amount of entries passed was just right. Signed-off-by: NSasha Levin <levinsasha928@gmail.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Liu, Jinsong 提交于
Intel latest cpu add 6 new features, refer http://software.intel.com/file/36945 The new feature cpuid listed as below: 1. FMA CPUID.EAX=01H:ECX.FMA[bit 12] 2. MOVBE CPUID.EAX=01H:ECX.MOVBE[bit 22] 3. BMI1 CPUID.EAX=07H,ECX=0H:EBX.BMI1[bit 3] 4. AVX2 CPUID.EAX=07H,ECX=0H:EBX.AVX2[bit 5] 5. BMI2 CPUID.EAX=07H,ECX=0H:EBX.BMI2[bit 8] 6. LZCNT CPUID.EAX=80000001H:ECX.LZCNT[bit 5] This patch expose these features to guest. Among them, FMA/MOVBE/LZCNT has already been defined, MOVBE/LZCNT has already been exposed. This patch defines BMI1/AVX2/BMI2, and exposes FMA/BMI1/AVX2/BMI2 to guest. Signed-off-by: NLiu, Jinsong <jinsong.liu@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
The cpuid code has grown; put it into a separate file. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
INSB : 6C INSW/INSD : 6D OUTSB : 6E OUTSW/OUTSD: 6F The I/O port address is read from the DX register when we decode the operand because we see the SrcDX/DstDX flag is set. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce id_to_memslot to get memslot by slot id Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce kvm_for_each_memslot to walk all valid memslot Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce update_memslots to update slot which will be update to kvm->memslots Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce KVM_MEM_SLOTS_NUM macro to instead of KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Takuya Yoshikawa 提交于
BSF: 0F BC BSR: 0F BD Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Takuya Yoshikawa 提交于
CMPXCHG: 0F B0, 0F B1 Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Takuya Yoshikawa 提交于
WRMSR: 0F 30 RDMSR: 0F 32 Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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