)]}' { "log": [ { "commit": "1fd4f2a5ed8f80cf6e23d2bdf78554f6a1ac7997", "tree": "eb7d79c7f39788547a5dd9844295814085fcccc6", "parents": [ "97222cc8316328965851ed28d23f6b64b4c912d2" ], "author": { "name": "Eddie Dong", "email": "eddie.dong@intel.com", "time": "Wed Jul 18 12:03:39 2007 +0300" }, "committer": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Sat Oct 13 10:18:25 2007 +0200" }, "message": "KVM: In-kernel I/O APIC model\n\nThis allows in-kernel host-side device drivers to raise guest interrupts\nwithout going to userspace.\n\n[avi: fix level-triggered interrupt redelivery on eoi]\n[avi: add missing #include]\n[avi: avoid redelivery of edge-triggered interrupt]\n[avi: implement polarity]\n[avi: don\u0027t deliver edge-triggered interrupts when unmasking]\n[avi: fix host oops on invalid guest access]\n\nSigned-off-by: Yaozu (Eddie) Dong \u003ceddie.dong@intel.com\u003e\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\n" }, { "commit": "97222cc8316328965851ed28d23f6b64b4c912d2", "tree": "469b2f72e74046a7aec5061df194c3f68812a224", "parents": [ "7017fc3d1a12e30ea7df4992152978a188433457" ], "author": { "name": "Eddie Dong", "email": "eddie.dong@intel.com", "time": "Wed Sep 12 10:58:04 2007 +0300" }, "committer": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Sat Oct 13 10:18:25 2007 +0200" }, "message": "KVM: Emulate local APIC in kernel\n\nBecause lightweight exits (exits which don\u0027t involve userspace) are many\ntimes faster than heavyweight exits, it makes sense to emulate high usage\ndevices in the kernel. The local APIC is one such device, especially for\nWindows and for SMP, so we add an APIC model to kvm.\n\nIt also allows in-kernel host-side drivers to inject interrupts without\ngoing through userspace.\n\n[compile fix on i386 from Jindrich Makovicka]\n\nSigned-off-by: Yaozu (Eddie) Dong \u003cEddie.Dong@intel.com\u003e\nSigned-off-by: Qing He \u003cqing.he@intel.com\u003e\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\n" }, { "commit": "85f455f7ddbed403b34b4d54b1eaf0e14126a126", "tree": "1dba7aa8fee3c8f756e12049c496dee5baae752c", "parents": [ "152d3f2f246ce3c2a0cf2fc6c2214663cd99aa83" ], "author": { "name": "Eddie Dong", "email": "eddie.dong@intel.com", "time": "Fri Jul 06 12:20:49 2007 +0300" }, "committer": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Sat Oct 13 10:18:24 2007 +0200" }, "message": "KVM: Add support for in-kernel PIC emulation\n\nSigned-off-by: Yaozu (Eddie) Dong \u003ceddie.dong@intel.com\u003e\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\n" }, { "commit": "6aa8b732ca01c3d7a54e93f4d701b8aabbe60fb7", "tree": "23fcbe6f4918cacdae26d513a2bd13e91d8b4c38", "parents": [ "f5f1a24a2caa299bb7d294aee92d7dd3410d9ed7" ], "author": { "name": "Avi Kivity", "email": "avi@qumranet.com", "time": "Sun Dec 10 02:21:36 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Sun Dec 10 09:57:22 2006 -0800" }, "message": "[PATCH] kvm: userspace interface\n\nweb site: http://kvm.sourceforge.net\n\nmailing list: kvm-devel@lists.sourceforge.net\n (http://lists.sourceforge.net/lists/listinfo/kvm-devel)\n\nThe following patchset adds a driver for Intel\u0027s hardware virtualization\nextensions to the x86 architecture. The driver adds a character device\n(/dev/kvm) that exposes the virtualization capabilities to userspace. Using\nthis driver, a process can run a virtual machine (a \"guest\") in a fully\nvirtualized PC containing its own virtual hard disks, network adapters, and\ndisplay.\n\nUsing this driver, one can start multiple virtual machines on a host.\n\nEach virtual machine is a process on the host; a virtual cpu is a thread in\nthat process. kill(1), nice(1), top(1) work as expected. In effect, the\ndriver adds a third execution mode to the existing two: we now have kernel\nmode, user mode, and guest mode. Guest mode has its own address space mapping\nguest physical memory (which is accessible to user mode by mmap()ing\n/dev/kvm). Guest mode has no access to any I/O devices; any such access is\nintercepted and directed to user mode for emulation.\n\nThe driver supports i386 and x86_64 hosts and guests. All combinations are\nallowed except x86_64 guest on i386 host. For i386 guests and hosts, both pae\nand non-pae paging modes are supported.\n\nSMP hosts and UP guests are supported. At the moment only Intel\nhardware is supported, but AMD virtualization support is being worked on.\n\nPerformance currently is non-stellar due to the naive implementation of the\nmmu virtualization, which throws away most of the shadow page table entries\nevery context switch. We plan to address this in two ways:\n\n- cache shadow page tables across tlb flushes\n- wait until AMD and Intel release processors with nested page tables\n\nCurrently a virtual desktop is responsive but consumes a lot of CPU. Under\nWindows I tried playing pinball and watching a few flash movies; with a recent\nCPU one can hardly feel the virtualization. Linux/X is slower, probably due\nto X being in a separate process.\n\nIn addition to the driver, you need a slightly modified qemu to provide I/O\ndevice emulation and the BIOS.\n\nCaveats (akpm: might no longer be true):\n\n- The Windows install currently bluescreens due to a problem with the\n virtual APIC. We are working on a fix. A temporary workaround is to\n use an existing image or install through qemu\n- Windows 64-bit does not work. That\u0027s also true for qemu, so it\u0027s\n probably a problem with the device model.\n\n[bero@arklinux.org: build fix]\n[simon.kagstrom@bth.se: build fix, other fixes]\n[uril@qumranet.com: KVM: Expose interrupt bitmap]\n[akpm@osdl.org: i386 build fix]\n[mingo@elte.hu: i386 fixes]\n[rdreier@cisco.com: add log levels to all printks]\n[randy.dunlap@oracle.com: Fix sparse NULL and C99 struct init warnings]\n[anthony@codemonkey.ws: KVM: AMD SVM: 32-bit host support]\nSigned-off-by: Yaniv Kamay \u003cyaniv@qumranet.com\u003e\nSigned-off-by: Avi Kivity \u003cavi@qumranet.com\u003e\nCc: Simon Kagstrom \u003csimon.kagstrom@bth.se\u003e\nCc: Bernhard Rosenkraenzer \u003cbero@arklinux.org\u003e\nSigned-off-by: Uri Lublin \u003curil@qumranet.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Roland Dreier \u003crolandd@cisco.com\u003e\nSigned-off-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Anthony Liguori \u003canthony@codemonkey.ws\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" } ] }