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  1. 10 12月, 2015 1 次提交
    • T
      KVM: PPC: Increase memslots to 512 · 696066f8
      由 Thomas Huth 提交于 
      Only using 32 memslots for KVM on powerpc is way too low, you can
nowadays hit this limit quite fast by adding a couple of PCI devices
and/or pluggable memory DIMMs to the guest.

x86 already increased the KVM_USER_MEM_SLOTS to 509, to satisfy 256
pluggable DIMM slots, 3 private slots and 253 slots for other things
like PCI devices (i.e. resulting in 256 + 3 + 253 = 512 slots in
total). We should do something similar for powerpc, and since we do
not use private slots here, we can set the value to 512 directly.

While we're at it, also remove the KVM_MEM_SLOTS_NUM definition
from the powerpc-specific header since this gets defined in the
generic kvm_host.h header anyway.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      696066f8
  3. 09 12月, 2015 3 次提交
    • G
      KVM: PPC: Book3S PR: Remove unused variable 'vcpu_book3s' · edfaff26
      由 Geyslan G. Bem 提交于 
      The vcpu_book3s variable is assigned but never used. So remove it.
Found using cppcheck.
Signed-off-by: NGeyslan G. Bem <geyslan@gmail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      edfaff26
    • T
      KVM: PPC: Fix emulation of H_SET_DABR/X on POWER8 · 760a7364
      由 Thomas Huth 提交于 
      In the old DABR register, the BT (Breakpoint Translation) bit
is bit number 61. In the new DAWRX register, the WT (Watchpoint
Translation) bit is bit number 59. So to move the DABR-BT bit
into the position of the DAWRX-WT bit, it has to be shifted by
two, not only by one. This fixes hardware watchpoints in gdb of
older guests that only use the H_SET_DABR/X interface instead
of the new H_SET_MODE interface.

Cc: stable@vger.kernel.org # v3.14+
Signed-off-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NLaurent Vivier <lvivier@redhat.com>
Reviewed-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      760a7364
    • P
      KVM: PPC: Book3S HV: Handle unexpected traps in guest entry/exit code better · 1c9e3d51
      由 Paul Mackerras 提交于 
      As we saw with the TM Bad Thing type of program interrupt occurring
on the hrfid that enters the guest, it is not completely impossible
to have a trap occurring in the guest entry/exit code, despite the
fact that the code has been written to avoid taking any traps.

This adds a check in the kvmppc_handle_exit_hv() function to detect
the case when a trap has occurred in the hypervisor-mode code, and
instead of treating it just like a trap in guest code, we now print
a message and return to userspace with a KVM_EXIT_INTERNAL_ERROR
exit reason.

Of the various interrupts that get handled in the assembly code in
the guest exit path and that can return directly to the guest, the
only one that can occur when MSR.HV=1 and MSR.EE=0 is machine check
(other than system call, which we can avoid just by not doing a sc
instruction).  Therefore this adds code to the machine check path to
ensure that if the MCE occurred in hypervisor mode, we exit to the
host rather than trying to continue the guest.
Signed-off-by: NPaul Mackerras <paulus@samba.org>
      1c9e3d51
  5. 02 12月, 2015 1 次提交
    • P
      Merge tag 'kvm-s390-next-4.5-1' of... · 46014634
      由 Paolo Bonzini 提交于 
      Merge tag 'kvm-s390-next-4.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390 features, kvm_get_vcpu_by_id and stat

Several features for s390
1. ESCA support (up to 248 vCPUs)
2. KVM detection: we  can now detect if we support KVM (e.g. does KVM
   under KVM work?)

kvm_stat:
1. cleanup the exit path

kvm_get_vcpu_by_id:
1. Use kvm_get_vcpu_by_id where appropriate
2. Apply a heuristic to optimize for ID VCPU == No. VCPU
      46014634
  7. 30 11月, 2015 23 次提交
  9. 26 11月, 2015 12 次提交