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  1. 31 12月, 2008 4 次提交
  3. 28 10月, 2008 1 次提交
  5. 15 10月, 2008 9 次提交
  7. 25 8月, 2008 1 次提交
    • A
      KVM: fix userspace ABI breakage · 1327138e
      由 Adrian Bunk 提交于 
      The following part of commit 9ef621d3
(KVM: Support mixed endian machines) changed on the size of a struct
that is exported to userspace:

include/linux/kvm.h:

@@ -318,14 +318,14 @@ struct kvm_trace_rec {
 	__u32 vcpu_id;
 	union {
 		struct {
-			__u32 cycle_lo, cycle_hi;
+			__u64 cycle_u64;
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
 		} cycle;
 		struct {
 			__u32 extra_u32[KVM_TRC_EXTRA_MAX];
 		} nocycle;
 	} u;
-};
+} __attribute__((packed));

Packing a struct was the correct idea, but it packed the wrong struct.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      1327138e
  9. 29 7月, 2008 1 次提交
  11. 20 7月, 2008 2 次提交
    • T
      KVM: Support mixed endian machines · 9ef621d3
      由 Tan, Li 提交于 
      Currently kvmtrace is not portable. This will prevent from copying a
trace file from big-endian target to little-endian workstation for analysis.
In the patch, kernel outputs metadata containing a magic number to trace
log, and changes 64-bit words to be u64 instead of a pair of u32s.
Signed-off-by: NTan Li <li.tan@intel.com>
Acked-by: NJerone Young <jyoung5@us.ibm.com>
Acked-by: NHollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      9ef621d3
    • L
      KVM: Add coalesced MMIO support (common part) · 5f94c174
      由 Laurent Vivier 提交于 
      This patch adds all needed structures to coalesce MMIOs.
Until an architecture uses it, it is not compiled.

Coalesced MMIO introduces two ioctl() to define where are the MMIO zones that
can be coalesced:

- KVM_REGISTER_COALESCED_MMIO registers a coalesced MMIO zone.
  It requests one parameter (struct kvm_coalesced_mmio_zone) which defines
  a memory area where MMIOs can be coalesced until the next switch to
  user space. The maximum number of MMIO zones is KVM_COALESCED_MMIO_ZONE_MAX.

- KVM_UNREGISTER_COALESCED_MMIO cancels all registered zones inside
  the given bounds (bounds are also given by struct kvm_coalesced_mmio_zone).

The userspace client can check kernel coalesced MMIO availability by asking
ioctl(KVM_CHECK_EXTENSION) for the KVM_CAP_COALESCED_MMIO capability.
The ioctl() call to KVM_CAP_COALESCED_MMIO will return 0 if not supported,
or the page offset where will be stored the ring buffer.
The page offset depends on the architecture.

After an ioctl(KVM_RUN), the first page of the KVM memory mapped points to
a kvm_run structure. The offset given by KVM_CAP_COALESCED_MMIO is
an offset to the coalesced MMIO ring expressed in PAGE_SIZE relatively
to the address of the start of th kvm_run structure. The MMIO ring buffer
is defined by the structure kvm_coalesced_mmio_ring.

[akio: fix oops during guest shutdown]
Signed-off-by: NLaurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: NAkio Takebe <takebe_akio@jp.fujitsu.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      5f94c174
  13. 27 4月, 2008 15 次提交
  15. 03 3月, 2008 1 次提交
    • A
      KVM: Make the supported cpuid list a host property rather than a vm property · 674eea0f
      由 Avi Kivity 提交于 
      One of the use cases for the supported cpuid list is to create a "greatest
common denominator" of cpu capabilities in a server farm.  As such, it is
useful to be able to get the list without creating a virtual machine first.

Since the code does not depend on the vm in any way, all that is needed is
to move it to the device ioctl handler.  The capability identifier is also
changed so that binaries made against -rc1 will fail gracefully.
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      674eea0f
  17. 31 1月, 2008 4 次提交
  19. 30 1月, 2008 2 次提交
    • J
      KVM: Add ifdef in irqchip struct for x86 only structures · 51e29625
      由 Jerone Young 提交于 
      This patch fixes a small issue where sturctures:
	kvm_pic_state
	kvm_ioapic_state

are defined inside x86 specific code and may or may not
be defined in anyway for other architectures. The problem
caused is one cannot compile userspace apps (ex. libkvm)
for other archs since a size cannot be determined for these
structures.
Signed-off-by: NJerone Young <jyoung5@us.ibm.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      51e29625
    • D
      KVM: Enhance guest cpuid management · 07716717
      由 Dan Kenigsberg 提交于 
      The current cpuid management suffers from several problems, which inhibit
passing through the host feature set to the guest:

 - No way to tell which features the host supports

  While some features can be supported with no changes to kvm, others
  need explicit support.  That means kvm needs to vet the feature set
  before it is passed to the guest.

 - No support for indexed or stateful cpuid entries

  Some cpuid entries depend on ecx as well as on eax, or on internal
  state in the processor (running cpuid multiple times with the same
  input returns different output).  The current cpuid machinery only
  supports keying on eax.

 - No support for save/restore/migrate

  The internal state above needs to be exposed to userspace so it can
  be saved or migrated.

This patch adds extended cpuid support by means of three new ioctls:

 - KVM_GET_SUPPORTED_CPUID: get all cpuid entries the host (and kvm)
   supports

 - KVM_SET_CPUID2: sets the vcpu's cpuid table

 - KVM_GET_CPUID2: gets the vcpu's cpuid table, including hidden state

[avi: fix original KVM_SET_CPUID not removing nx on non-nx hosts as it did
      before]
Signed-off-by: NDan Kenigsberg <danken@qumranet.com>
Signed-off-by: NAvi Kivity <avi@qumranet.com>
      07716717