| SHA1 | ||
|---|---|---|
This make sure not to schedule in atomic during fx_init. I also changed the name of fpu_init to fx_finit to avoid duplicating the name with fpu_init that is already used in the kernel, this makes grep simpler if nothing else. Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Andrea Arcangeli
authored and
 Avi Kivity
commited |
bc1a34f1bf | |
Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Sheng Yang
authored and
Avi Kivity
commited |
1439442c7b | |
[aliguory: plug leak] Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Sheng Yang
authored and
Avi Kivity
commited |
b7ebfb0509 | |
Enable kvm_set_spte() to generate EPT entries. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Sheng Yang
authored and
Avi Kivity
commited |
7b52345e2c | |
The function get_tdp_level() provided the number of tdp level for EPT and NPT rather than the NPT specific macro. Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Sheng Yang
authored and
Avi Kivity
commited |
67253af52e | |
So userspace can save/restore the mpstate during migration. [avi: export the #define constants describing the value] [christian: add s390 stubs] [avi: ditto for ia64] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Marcelo Tosatti
authored and
Avi Kivity
commited |
62d9f0dbc9 | |
We wish to export it to userspace, so move it into the kvm namespace. Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
a45352908b | |
Trace markers allow userspace to trace execution of a virtual machine in order to monitor its performance. Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Feng (Eric) Liu
authored and
Avi Kivity
commited |
2714d1d3d6 | |
To properly forward a MCE occured while the guest is running to the host, we have to intercept this exception and call the host handler by hand. This is implemented by this patch. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Joerg Roedel
authored and
Avi Kivity
commited |
53371b5098 | |
This patch introduces a gfn_to_pfn() function and corresponding functions like kvm_release_pfn_dirty(). Using these new functions, we can modify the x86 MMU to no longer assume that it can always get a struct page for any given gfn. We don't want to eliminate gfn_to_page() entirely because a number of places assume they can do gfn_to_page() and then kmap() the results. When we support IO memory, gfn_to_page() will fail for IO pages although gfn_to_pfn() will succeed. This does not implement support for avoiding reference counting for reserved RAM or for IO memory. However, it should make those things pretty straight forward. Since we're only introducing new common symbols, I don't think it will break the non-x86 architectures but I haven't tested those. I've tested Intel, AMD, NPT, and hugetlbfs with Windows and Linux guests. [avi: fix overflow when shifting left pfns by adding casts] Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Anthony Liguori
authored and
Avi Kivity
commited |
35149e2129 | |
The kvm_host.h file for x86 declares the functions kvm_set_cr[0348]. In the header file their second parameter is named cr0 in all cases. This patch renames the parameters so that they match the function name. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Joerg Roedel
authored and
Avi Kivity
commited |
9c20456a32 | |
Unify slots_lock acquision around vcpu_run(). This is simpler and less
error-prone.
Also fix some callsites that were not grabbing the lock properly.
[avi: drop slots_lock while in guest mode to avoid holding the lock
for indefinite periods]
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Marcelo Tosatti
authored and
Avi Kivity
commited |
3200f405a1 | |
This emulates the x86 hardware task switch mechanism in software, as it is unsupported by either vmx or svm. It allows operating systems which use it, like freedos, to run as kvm guests. Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Izik Eidus
authored and
Avi Kivity
commited |
37817f2982 | |
Signed-off-by: Izik Eidus <izike@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Izik Eidus
authored and
Avi Kivity
commited |
2e4d265349 | |
Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
69a9f69bb2 | |
Hypercall based pte updates are faster than faults, and also allow use of the lazy MMU mode to batch operations. Don't report the feature if two dimensional paging is enabled. [avi: - one mmu_op hypercall instead of one per op - allow 64-bit gpa on hypercall - don't pass host errors (-ENOMEM) to guest] [akpm: warning fix on i386] Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
Marcelo Tosatti
authored and
Avi Kivity
commited |
2f333bcb4e | |
Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
9f81128591 | |
The patch moves the PIT model from userspace to kernel, and increases the timer accuracy greatly. [marcelo: make last_injected_time per-guest] Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Tested-and-Acked-by: Alex Davis <alex14641@yahoo.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Sheng Yang
authored and
Avi Kivity
commited |
7837699fa6 | |
Names like 'set_cr3()' look dangerously close to affecting the host. Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
2d3ad1f40c | |
Create large pages mappings if the guest PTE's are marked as such and the underlying memory is hugetlbfs backed. If the largepage contains write-protected pages, a large pte is not used. Gives a consistent 2% improvement for data copies on ram mounted filesystem, without NPT/EPT. Anthony measures a 4% improvement on 4-way kernbench, with NPT. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Marcelo Tosatti
authored and
Avi Kivity
commited |
05da45583d | |
Mark zapped root pagetables as invalid and ignore such pages during lookup. This is a problem with the cr3-target feature, where a zapped root table fools the faulting code into creating a read-only mapping. The result is a lockup if the instruction can't be emulated. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Marcelo Tosatti
authored and
Avi Kivity
commited |
2e53d63acb | |
Signed-off-by: Amit Shah <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Amit Shah
authored and
Avi Kivity
commited |
f11c3a8d84 | |
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> 
Glauber de Oliveira Costa
authored and
Avi Kivity
commited |
18068523d3 | |
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>
Joerg Roedel
authored and
Avi Kivity
commited |
cc4b6871e7 | |
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>
Joerg Roedel
authored and
Avi Kivity
commited |
1855267210 | |
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>
Joerg Roedel
authored and
Avi Kivity
commited |
f2b4b7ddf6 | |
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>
Sheng Yang
authored and
Avi Kivity
commited |
2384d2b326 | |
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com> 
Dong, Eddie
authored and
Avi Kivity
commited |
1ae0a13def | |
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> 
Joe Perches
authored and
 Ingo Molnar
commited |
7d76b4d376 | |
When executing a test program called "crashme", we found the KVM guest cannot survive more than ten seconds, then encounterd kernel panic. The basic concept of "crashme" is generating random assembly code and trying to execute it. After some fixes on emulator insn validity judgment, we found it's hard to get the current emulator handle the invalid instructions correctly, for the #UD trap for hypercall patching caused troubles. The problem is, if the opcode itself was OK, but combination of opcode and modrm_reg was invalid, and one operand of the opcode was memory (SrcMem or DstMem), the emulator will fetch the memory operand first rather than checking the validity, and may encounter an error there. For example, ".byte 0xfe, 0x34, 0xcd" has this problem. In the patch, we simply check that if the invalid opcode wasn't vmcall/vmmcall, then return from emulate_instruction() and inject a #UD to guest. With the patch, the guest had been running for more than 12 hours. Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com> Signed-off-by: Sheng Yang <sheng.yang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Sheng Yang
authored and
Avi Kivity
commited |
571008dacc | |
Since gfn_to_page() is a sleeping function, and we want to make the core mmu spinlocked, we need to pass the page from the walker context (which can sleep) to the shadow context (which cannot). [marcelo: avoid recursive locking of mmap_sem] Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
d7824fff89 | |
FlexPriority accelerates the tpr without any patching. Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
774ead3ad9 | |
Add a facility to report on accesses to the local apic tpr even if the local apic is emulated in the kernel. This is basically a hack that allows userspace to patch Windows which tends to bang on the tpr a lot. Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
b209749f52 | |
Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
dfc5aa00cb | |
This paves the way for multiple architecture support. Note that while ioapic.c could potentially be shared with ia64, it is also moved. Signed-off-by: Avi Kivity <avi@qumranet.com>
Avi Kivity
commited |
edf884172e |
Renamed from drivers/kvm/x86.h (Browse further)