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2008-04-27KVM: Add stat counter for hypercallsAmit Shah
Signed-off-by: Amit Shah <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: Use x86's segment descriptor struct instead of private definitionAvi Kivity
The x86 desc_struct unification allows us to remove segment_descriptor.h. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: Add API for determining the number of supported memory slotsAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: Add API to retrieve the number of supported vcpus per vmAvi Kivity
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: make register_address_increment and JMP_REL static inlinesHarvey Harrison
Change jmp_rel() to a function as well. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: make register_address, address_mask static inlinesHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: add ad_mask static inlineHarvey Harrison
Replaces open-coded mask calculation in macros. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27x86: KVM guest: paravirtualized clocksourceGlauber de Oliveira Costa
This is the guest part of kvm clock implementation It does not do tsc-only timing, as tsc can have deltas between cpus, and it did not seem worthy to me to keep adjusting them. We do use it, however, for fine-grained adjustment. Other than that, time comes from the host. [randy dunlap: add missing include] [randy dunlap: disallow on Voyager or Visual WS] Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: paravirtualized clocksource: host partGlauber de Oliveira Costa
This is the host part of kvm clocksource implementation. As it does not include clockevents, it is a fairly simple implementation. We only have to register a per-vcpu area, and start writing to it periodically. The area is binary compatible with xen, as we use the same shadow_info structure. [marcelo: fix bad_page on MSR_KVM_SYSTEM_TIME] [avi: save full value of the msr, even if enable bit is clear] [avi: clear previous value of time_page] Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: enable LBR virtualizationJoerg Roedel
This patch implements the Last Branch Record Virtualization (LBRV) feature of the AMD Barcelona and Phenom processors into the kvm-amd module. It will only be enabled if the guest enables last branch recording in the DEBUG_CTL MSR. So there is no increased world switch overhead when the guest doesn't use these MSRs. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Markus Rechberger <markus.rechberger@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: allocate the MSR permission map per VCPUJoerg Roedel
This patch changes the kvm-amd module to allocate the SVM MSR permission map per VCPU instead of a global map for all VCPUs. With this we have more flexibility allowing specific guests to access virtualized MSRs. This is required for LBR virtualization. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Markus Rechberger <markus.rechberger@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: let init_vmcb() take struct vcpu_svm as parameterJoerg Roedel
Change the parameter of the init_vmcb() function in the kvm-amd module from struct vmcb to struct vcpu_svm. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Markus Rechberger <markus.rechberger@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: VMX: fix typo in VMX header defineRyan Harper
Looking at Intel Volume 3b, page 148, table 20-11 and noticed that the field name is 'Deliver' not 'Deliever'. Attached patch changes the define name and its user in vmx.c Signed-off-by: Ryan Harper <ryanh@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: add support for Nested PagingJoerg Roedel
This patch contains the SVM architecture dependent changes for KVM to enable support for the Nested Paging feature of AMD Barcelona and Phenom processors. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: add TDP support to the KVM MMUJoerg Roedel
This patch contains the changes to the KVM MMU necessary for support of the Nested Paging feature in AMD Barcelona and Phenom Processors. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: export the load_pdptrs() function to modulesJoerg Roedel
The load_pdptrs() function is required in the SVM module for NPT support. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: make the __nonpaging_map function genericJoerg Roedel
The mapping function for the nonpaging case in the softmmu does basically the same as required for Nested Paging. Make this function generic so it can be used for both. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: export information about NPT to generic x86 codeJoerg Roedel
The generic x86 code has to know if the specific implementation uses Nested Paging. In the generic code Nested Paging is called Two Dimensional Paging (TDP) to avoid confusion with (future) TDP implementations of other vendors. This patch exports the availability of TDP to the generic x86 code. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: add module parameter to disable Nested PagingJoerg Roedel
To disable the use of the Nested Paging feature even if it is available in hardware this patch adds a module parameter. Nested Paging can be disabled by passing npt=0 to the kvm_amd module. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: add detection of Nested Paging featureJoerg Roedel
Let SVM detect if the Nested Paging feature is available on the hardware. Disable it to keep this patch series bisectable. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: SVM: move feature detection to hardware setup codeJoerg Roedel
By moving the SVM feature detection from the each_cpu code to the hardware setup code it runs only once. As an additional advance the feature check is now available earlier in the module setup process. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: allow access to EFER in 32bit KVMJoerg Roedel
This patch makes the EFER register accessible on a 32bit KVM host. This is necessary to boot 32 bit PAE guests under SVM. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: VMX: unifdef the EFER specific codeJoerg Roedel
To allow access to the EFER register in 32bit KVM the EFER specific code has to be exported to the x86 generic code. This patch does this in a backwards compatible manner. [avi: add check for EFER-less hosts] Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: align valid EFER bits with the features of the host systemJoerg Roedel
This patch aligns the bits the guest can set in the EFER register with the features in the host processor. Currently it lets EFER.NX disabled if the processor does not support it and enables EFER.LME and EFER.LMA only for KVM on 64 bit hosts. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: make EFER_RESERVED_BITS configurable for architecture codeJoerg Roedel
This patch give the SVM and VMX implementations the ability to add some bits the guest can set in its EFER register. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: VMX: Enable Virtual Processor Identification (VPID)Sheng Yang
To allow TLB entries to be retained across VM entry and VM exit, the VMM can now identify distinct address spaces through a new virtual-processor ID (VPID) field of the VMCS. [avi: drop vpid_sync_all()] [avi: add "cc" to asm constraints] Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: Decouple mmio from shadow page tablesAvi Kivity
Currently an mmio guest pte is encoded in the shadow pagetable as a not-present trapping pte, with the SHADOW_IO_MARK bit set. However nothing is ever done with this information, so maintaining it is a useless complication. This patch moves the check for mmio to before shadow ptes are instantiated, so the shadow code is never invoked for ptes that reference mmio. The code is simpler, and with future work, can be made to handle mmio concurrently. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: group decoding for group 1 instructionsAvi Kivity
Opcodes 0x80-0x83 Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: add group 7 decodingAvi Kivity
This adds group decoding for opcode 0x0f 0x01 (group 7). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: Group decoding for groups 4 and 5Avi Kivity
Add group decoding support for opcode 0xfe (group 4) and 0xff (group 5). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: Group decoding for group 3Avi Kivity
This adds group decoding support for opcodes 0xf6, 0xf7 (group 3). Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: group decoding for group 1AAvi Kivity
This adds group decode support for opcode 0x8f. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: x86 emulator: add support for group decodingAvi Kivity
Certain x86 instructions use bits 3:5 of the byte following the opcode as an opcode extension, with the decode sometimes depending on bits 6:7 as well. Add support for this in the main decoding table rather than an ad-hock adaptation per opcode. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: Simplify hash table indexingDong, Eddie
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27KVM: MMU: Update shadow ptes on partial guest pte writesDong, Eddie
A guest partial guest pte write will leave shadow_trap_nonpresent_pte in spte, which generates a vmexit at the next guest access through that pte. This patch improves this by reading the full guest pte in advance and thus being able to update the spte and eliminate the vmexit. This helps pae guests which use two 32-bit writes to set a single 64-bit pte. [truncation fix by Eric] Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootmem-v3 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootmem-v3: x86_64/mm: check and print vmemmap allocation continuous x86_64: fix setup_node_bootmem to support big mem excluding with memmap x86_64: make reserve_bootmem_generic() use new reserve_bootmem() mm: allow reserve_bootmem() cross nodes mm: offset align in alloc_bootmem() mm: fix alloc_bootmem_core to use fast searching for all nodes mm: make mem_map allocation continuous
2008-04-26x86_64/mm: check and print vmemmap allocation continuousYinghai Lu
On big systems with lots of memory, don't print out too much during bootup, and make it easy to find if it is continuous. on 256G 8 sockets system will get [ffffe20000000000-ffffe20002bfffff] PMD -> [ffff810001400000-ffff810003ffffff] on node 0 [ffffe2001c700000-ffffe2001c7fffff] potential offnode page_structs [ffffe20002c00000-ffffe2001c7fffff] PMD -> [ffff81000c000000-ffff8100255fffff] on node 0 [ffffe20038700000-ffffe200387fffff] potential offnode page_structs [ffffe2001c800000-ffffe200387fffff] PMD -> [ffff810820200000-ffff81083c1fffff] on node 1 [ffffe20040000000-ffffe2007fffffff] PUD ->ffff811027a00000 on node 2 [ffffe20038800000-ffffe2003fffffff] PMD -> [ffff811020200000-ffff8110279fffff] on node 2 [ffffe20054700000-ffffe200547fffff] potential offnode page_structs [ffffe20040000000-ffffe200547fffff] PMD -> [ffff811027c00000-ffff81103c3fffff] on node 2 [ffffe20070700000-ffffe200707fffff] potential offnode page_structs [ffffe20054800000-ffffe200707fffff] PMD -> [ffff811820200000-ffff81183c1fffff] on node 3 [ffffe20080000000-ffffe200bfffffff] PUD ->ffff81202fa00000 on node 4 [ffffe20070800000-ffffe2007fffffff] PMD -> [ffff812020200000-ffff81202f9fffff] on node 4 [ffffe2008c700000-ffffe2008c7fffff] potential offnode page_structs [ffffe20080000000-ffffe2008c7fffff] PMD -> [ffff81202fc00000-ffff81203c3fffff] on node 4 [ffffe200a8700000-ffffe200a87fffff] potential offnode page_structs [ffffe2008c800000-ffffe200a87fffff] PMD -> [ffff812820200000-ffff81283c1fffff] on node 5 [ffffe200c0000000-ffffe200ffffffff] PUD ->ffff813037a00000 on node 6 [ffffe200a8800000-ffffe200bfffffff] PMD -> [ffff813020200000-ffff8130379fffff] on node 6 [ffffe200c4700000-ffffe200c47fffff] potential offnode page_structs [ffffe200c0000000-ffffe200c47fffff] PMD -> [ffff813037c00000-ffff81303c3fffff] on node 6 [ffffe200c4800000-ffffe200e07fffff] PMD -> [ffff813820200000-ffff81383c1fffff] on node 7 instead of a very long print out... Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86_64: fix setup_node_bootmem to support big mem excluding with memmapYinghai Lu
typical case: four sockets system, every node has 4g ram, and we are using: memmap=10g$4g to mask out memory on node1 and node2 when numa is enabled, early_node_mem is used to get node_data and node_bootmap. if it can not get memory from the same node with find_e820_area(), it will use alloc_bootmem to get buff from previous nodes. so check it and print out some info about it. need to move early_res_to_bootmem into every setup_node_bootmem. and it takes range that node has. otherwise alloc_bootmem could return addr that reserved early. depends on "mm: make reserve_bootmem can crossed the nodes". Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86_64: make reserve_bootmem_generic() use new reserve_bootmem()Yinghai Lu
"mm: make reserve_bootmem can crossed the nodes" provides new reserve_bootmem(), let reserve_bootmem_generic() use that. reserve_bootmem_generic() is used to reserve initramdisk, so this way we can make sure even when bootloader or kexec load ranges cross the node memory boundaries, reserve_bootmem still works. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-generic-bitops-v3 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-generic-bitops-v3: x86, bitops: select the generic bitmap search functions x86: include/asm-x86/pgalloc.h/bitops.h: checkpatch cleanups - formatting only x86: finalize bitops unification x86, UML: remove x86-specific implementations of find_first_bit x86: optimize find_first_bit for small bitmaps x86: switch 64-bit to generic find_first_bit x86: generic versions of find_first_(zero_)bit, convert i386 bitops: use __fls for fls64 on 64-bit archs generic: implement __fls on all 64-bit archs generic: introduce a generic __fls implementation x86: merge the simple bitops and move them to bitops.h x86, generic: optimize find_next_(zero_)bit for small constant-size bitmaps x86, uml: fix uml with generic find_next_bit for x86 x86: change x86 to use generic find_next_bit uml: Kconfig cleanup uml: fix build error
2008-04-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootparam * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-bigbox-bootparam: x86, boot: Document for linked list of struct setup_data x86, boot: export linked list of struct setup_data via debugfs x86, boot: add linked list of struct setup_data x86, boot: add free_early to early reservation machanism
2008-04-26x86, boot: export linked list of struct setup_data via debugfsHuang, Ying
Export linked list of struct setup_data via debugfs. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86, boot: add linked list of struct setup_dataHuang, Ying
This patch adds a field of 64-bit physical pointer to NULL terminated single linked list of struct setup_data to real-mode kernel header. This is used as a more extensible boot parameters passing mechanism. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86, boot: add free_early to early reservation machanismHuang, Ying
Add free_early to early reservation mechanism - this way early bootup failure paths can stop wasting memory. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-26x86, PAT: disable /dev/mem mmap RAM with PATVenki Pallipadi
disable /dev/mem mmap of RAM with PAT. It makes things safer and eliminates aliasing. A future improvement would be to avoid the range_is_allowed duplication. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86, bitops: select the generic bitmap search functionsAlexander van Heukelum
Introduce GENERIC_FIND_FIRST_BIT and GENERIC_FIND_NEXT_BIT in lib/Kconfig, defaulting to off. An arch that wants to use the generic implementation now only has to use a select statement to include them. I added an always-y option (X86_CPU) to arch/x86/Kconfig.cpu and used that to select the generic search functions. This way ARCH=um SUBARCH=i386 automatically picks up the change too, and arch/um/Kconfig.i386 can therefore be simplified a bit. ARCH=um SUBARCH=x86_64 does things differently, but still compiles fine. It seems that a "def_bool y" always wins over a "def_bool n"? Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86, UML: remove x86-specific implementations of find_first_bitAlexander van Heukelum
x86 has been switched to the generic versions of find_first_bit and find_first_zero_bit, but the original versions were retained. This patch just removes the now unused x86-specific versions. also update UML. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: switch 64-bit to generic find_first_bitAlexander van Heukelum
Switch x86_64 to generic find_first_bit. The x86_64-specific implementation is not removed. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: generic versions of find_first_(zero_)bit, convert i386Alexander van Heukelum
Generic versions of __find_first_bit and __find_first_zero_bit are introduced as simplified versions of __find_next_bit and __find_next_zero_bit. Their compilation and use are guarded by a new config variable GENERIC_FIND_FIRST_BIT. The generic versions of find_first_bit and find_first_zero_bit are implemented in terms of the newly introduced __find_first_bit and __find_first_zero_bit. This patch does not remove the i386-specific implementation, but it does switch i386 to use the generic functions by setting GENERIC_FIND_FIRST_BIT=y for X86_32. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-26x86: merge the simple bitops and move them to bitops.hAlexander van Heukelum
Some of those can be written in such a way that the same inline assembly can be used to generate both 32 bit and 64 bit code. For ffs and fls, x86_64 unconditionally used the cmov instruction and i386 unconditionally used a conditional branch over a mov instruction. In the current patch I chose to select the version based on the availability of the cmov instruction instead. A small detail here is that x86_64 did not previously set CONFIG_X86_CMOV=y. Improved comments for ffs, ffz, fls and variations. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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