- 19 7月, 2012 6 次提交
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由 Takuya Yoshikawa 提交于
This is needed to push trace_kvm_age_page() into kvm_age_rmapp() in the following patch. 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
This makes it possible to loop over rmap_pde arrays in the same way as we do over rmap so that we can optimize kvm_handle_hva_range() easily in the following patch. 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
When we tested KVM under memory pressure, with THP enabled on the host, we noticed that MMU notifier took a long time to invalidate huge pages. Since the invalidation was done with mmu_lock held, it not only wasted the CPU but also made the host harder to respond. This patch mitigates this by using kvm_handle_hva_range(). Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Takuya Yoshikawa 提交于
When guest's memory is backed by THP pages, MMU notifier needs to call kvm_unmap_hva(), which in turn leads to kvm_handle_hva(), in a loop to invalidate a range of pages which constitute one huge page: for each page for each memslot if page is in memslot unmap using rmap This means although every page in that range is expected to be found in the same memslot, we are forced to check unrelated memslots many times. If the guest has more memslots, the situation will become worse. Furthermore, if the range does not include any pages in the guest's memory, the loop over the pages will just consume extra time. This patch, together with the following patches, solves this problem by introducing kvm_handle_hva_range() which makes the loop look like this: for each memslot for each page in memslot unmap using rmap In this new processing, the actual work is converted to a loop over rmap which is much more cache friendly than before. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Takuya Yoshikawa 提交于
This restricts hva handling in mmu code and makes it easier to extend kvm_handle_hva() so that it can treat a range of addresses later in this patch series. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Takuya Yoshikawa 提交于
We can treat every level uniformly. Signed-off-by: NTakuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 16 7月, 2012 3 次提交
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由 Michael S. Tsirkin 提交于
This reverts commit f9808b7f. After commit 'kvm: switch to apic_set_eoi_write, apic_write' the stubs are no longer needed as kvm does not look at apicdrivers anymore. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Michael S. Tsirkin 提交于
Use apic_set_eoi_write, apic_write to avoid meedling in core apic driver data structures directly. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Michael S. Tsirkin 提交于
KVM PV EOI optimization overrides eoi_write apic op with its own version. Add an API for this to avoid meddling with core x86 apic driver data structures directly. For KVM use, we don't need any guarantees about when the switch to the new op will take place, so it could in theory use this API after SMP init, but it currently doesn't, and restricting callers to early init makes it clear that it's safe as it won't race with actual APIC driver use. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Acked-by: NIngo Molnar <mingo@kernel.org> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 15 7月, 2012 1 次提交
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git://github.com/agraf/linux-2.6由 Avi Kivity 提交于
ppc queue from Alex Graf: * Prepare some of the booke code for 64 bit support * BookE: Fix ESR flag in DSI * BookE: Add rfci emulation * 'for-upstream' of git://github.com/agraf/linux-2.6: KVM: PPC: Critical interrupt emulation support KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests KVM: PPC64: booke: Set interrupt computation mode for 64-bit host KVM: PPC: bookehv: Add ESR flag to Data Storage Interrupt KVM: PPC: bookehv64: Add support for std/ld emulation. booke: Added crit/mc exception handler for e500v2 booke/bookehv: Add host crit-watchdog exception support Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 12 7月, 2012 2 次提交
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由 Mao, Junjie 提交于
This patch handles PCID/INVPCID for guests. Process-context identifiers (PCIDs) are a facility by which a logical processor may cache information for multiple linear-address spaces so that the processor may retain cached information when software switches to a different linear address space. Refer to section 4.10.1 in IA32 Intel Software Developer's Manual Volume 3A for details. For guests with EPT, the PCID feature is enabled and INVPCID behaves as running natively. For guests without EPT, the PCID feature is disabled and INVPCID triggers #UD. Signed-off-by: NJunjie Mao <junjie.mao@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Prarit Bhargava 提交于
While debugging I noticed that unlike all the other hypervisor code in the kernel, kvm does not have an entry for x86_hyper which is used in detect_hypervisor_platform() which results in a nice printk in the syslog. This is only really a stub function but it does make kvm more consistent with the other hypervisors. Signed-off-by: NPrarit Bhargava <prarit@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Marcelo Tostatti <mtosatti@redhat.com> Cc: kvm@vger.kernel.org Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 11 7月, 2012 17 次提交
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由 Bharat Bhushan 提交于
rfci instruction and CSRR0/1 registers are emulated. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NStuart Yoder <stuart.yoder@freescale.com> Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
tlbilxva emulation was using an u32 variable for guest effective address. Replace it with gva_t type to handle 64-bit guests. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
64-bit host needs to remain in 64-bit mode when an exception take place. Set interrupt computaion mode in EPCR register. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
ESR register is required by Data Storage Interrupt handling code. Add the specific flag to the interrupt handler. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Varun Sethi 提交于
Add support for std/ld emulation. Signed-off-by: NVarun Sethi <Varun.Sethi@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
Watchdog is taken at critical exception level. So this patch is tested with host watchdog exception happening when guest is running. Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Xiao Guangrong 提交于
Document fast page fault and mmu-lock in locking.txt 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 P bit of page fault error code is missed in this tracepoint, fix it by passing the full error 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
To see what happen on this path and help us to optimize it 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
If the the present bit of page fault error code is set, it indicates the shadow page is populated on all levels, it means what we do is only modify the access bit which can be done out of mmu-lock Currently, in order to simplify the code, we only fix the page fault caused by write-protect on the fast path 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
This bit indicates whether the spte can be writable on MMU, that means the corresponding gpte is writable and the corresponding gfn is not protected by shadow page protection In the later path, SPTE_MMU_WRITEABLE will indicates whether the spte can be locklessly updated 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
mmu_spte_update() is the common function, we can easily audit the path 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
Export the present bit of page fault error code, the later patch will use it 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
Use __drop_large_spte to cleanup this function and comment spte_write_protect 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 a common function to abstract spte write-protect to cleanup 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 reture value of __rmap_write_protect is either 1 or 0, use true/false instead of these Signed-off-by: NXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 09 7月, 2012 11 次提交
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由 Avi Kivity 提交于
Our emulation should be complete enough that we can emulate guests while they are in big real mode, or in a mode transition that is not virtualizable without unrestricted guest support. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Opcode 0F 00 /3. Encountered during Windows XP secondary processor bringup. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Guest software doesn't actually depend on it, but vmx will refuse us entry if we don't. Set the bit in both the cached segment and memory, just to be nice. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Some operations want to modify the descriptor later on, so save the address for future use. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Opcode 0F 00 /2. Used by isolinux durign the protected mode transition. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Opcodes 0F C8 - 0F CF. Used by the SeaBIOS cdrom code (though not in big real mode). Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
If instruction emulation fails, report it properly to userspace. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Process the event, possibly injecting an interrupt, before continuing. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Opcode C8. Only ENTER with lexical nesting depth 0 is implemented, since others are very rare. We'll fail emulation if nonzero lexical depth is used so data is not corrupted. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
This allows us to reuse the code without populating ctxt->src and overriding ctxt->op_bytes. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Commit 2adb5ad9 removed ByteOp from MOVZX/MOVSX, replacing them by SrcMem8, but neglected to fix the dependency in the emulation code on ByteOp. This caused the instruction not to have any effect in some circumstances. Fix by replacing the check for ByteOp with the equivalent src.op_bytes == 1. Signed-off-by: NAvi Kivity <avi@redhat.com>
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