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  1. 22 12月, 2015 6 次提交
  3. 18 12月, 2015 1 次提交
    • P
      kvm: x86: add support for KVM_CAP_SPLIT_IRQCHIP · 15eafc2e
      由 Paolo Bonzini 提交于 
      This patch adds support for split IRQ chip mode. When
KVM_CAP_SPLIT_IRQCHIP is enabled:

    1.) The PIC, PIT, and IOAPIC are implemented in userspace while
    the LAPIC is implemented by KVM.

    2.) The software IOAPIC delivers interrupts to the KVM LAPIC via
    kvm_set_irq. Interrupt delivery is configured via the MSI routing
    table, for which routes are reserved in target-i386/kvm.c then
    configured in hw/intc/ioapic.c

    3.) KVM delivers IOAPIC EOIs via a new exit KVM_EXIT_IOAPIC_EOI,
    which is handled in target-i386/kvm.c and relayed to the software
    IOAPIC via ioapic_eoi_broadcast.
Signed-off-by: NMatt Gingell <gingell@google.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
      15eafc2e
  5. 18 11月, 2015 1 次提交
    • E
      target-i386: Disable rdtscp on Opteron_G* CPU models · 33b5e8c0
      由 Eduardo Habkost 提交于 
      KVM can't virtualize rdtscp on AMD CPUs yet, so there's no point
in enabling it by default on AMD CPU models, as all we are
getting are confused users because of the "host doesn't support
requested feature" warnings.

Disable rdtscp on Opteron_G* models, but keep compatibility on
pc-*-2.4 and older (just in case there are people are doing funny
stuff using AMD CPU models on Intel hosts).
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
      33b5e8c0
  7. 06 11月, 2015 4 次提交
    • E
      target-i386: Remove POPCNT from qemu64 and qemu32 CPU models · 6aa91e4a
      由 Eduardo Habkost 提交于 
      POPCNT is not available on Penryn and older and on Opteron_G2 and older,
and we want to make the default CPU runnable in most hosts, so it won't
be enabled by default in KVM mode.

We should eventually have all features supported by TCG enabled by
default in TCG mode, but as we don't have a good mechanism today to
ensure we have different defaults in KVM and TCG mode, disable POPCNT in
the qemu64 and qemu32 CPU models entirely.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
      6aa91e4a
    • E
      target-i386: Remove ABM from qemu64 CPU model · 71195672
      由 Eduardo Habkost 提交于 
      ABM is not available on Sandy Bridge and older, and we want to make the
default CPU runnable in most hosts, so it won't be enabled by default in
KVM mode.

We should eventually have all features supported by TCG enabled by
default in TCG mode, but as we don't have a good mechanism today to
ensure we have different defaults in KVM and TCG mode, disable ABM in
the qemu64 CPU model entirely.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
      71195672
    • E
      target-i386: Remove SSE4a from qemu64 CPU model · 0909ad24
      由 Eduardo Habkost 提交于 
      SSE4a is not available in any Intel CPU, and we want to make the default
CPU runnable in most hosts, so it doesn't make sense to enable it by
default in KVM mode.

We should eventually have all features supported by TCG enabled by
default in TCG mode, but as we don't have a good mechanism today to
ensure we have different defaults in KVM and TCG mode, disable SSE4a in
the qemu64 CPU model entirely.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
      0909ad24
    • E
      target-i386: Set "check=off" by default on pc-*-2.4 and older · 3e684822
      由 Eduardo Habkost 提交于 
      The default CPU model (qemu64) have some issues today: it enables some
features (ABM and SSE4a) that are not present in many host CPUs. That
means many hosts (but not all of them) had those features silently
disabled in the default configuration in QEMU 2.4 and older.

With the new "check=on" default, this causes warnings to be printed in
the default configuration, because of the lack of SSE4A on all Intel
hosts, and the lack of ABM on Sandy Bridge and older hosts:

  $ qemu-system-x86_64 -machine pc,accel=kvm
  warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5]
  warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6]

Those issues will be fixed in pc-*-2.5 and newer. But as we can't change
the guest ABI in pc-*-2.4, disable "check" mode by default in pc-*-2.4
and older so we don't print spurious warnings.
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>
      3e684822
  9. 29 10月, 2015 1 次提交
  11. 23 10月, 2015 1 次提交
  13. 22 10月, 2015 1 次提交
  15. 03 10月, 2015 2 次提交
  17. 02 10月, 2015 1 次提交
  19. 25 9月, 2015 2 次提交
  21. 24 9月, 2015 1 次提交
  23. 10 9月, 2015 3 次提交
  25. 08 9月, 2015 1 次提交
  27. 13 8月, 2015 11 次提交
  29. 04 8月, 2015 1 次提交
  31. 16 7月, 2015 1 次提交
  33. 08 7月, 2015 1 次提交
  35. 07 7月, 2015 1 次提交