linux-toradex.git/arch/s390/include/asm/kvm_host.h, branch v3.2.32

KVM: s390: handle SIGP sense running intercepts

2011-11-17T14:25:46+00:00

SIGP sense running may cause an intercept on higher level
virtualization, so handle it by checking the CPUSTAT_RUNNING flag.

Signed-off-by: Cornelia Huck 
Signed-off-by: Carsten Otte 
Signed-off-by: Avi Kivity

KVM: s390: Fix RUNNING flag misinterpretation

2011-11-17T14:25:43+00:00

CPUSTAT_RUNNING was implemented signifying that a vcpu is not stopped.
This is not, however, what the architecture says: RUNNING should be
set when the host is acting on the behalf of the guest operating
system.

CPUSTAT_RUNNING has been changed to be set in kvm_arch_vcpu_load()
and to be unset in kvm_arch_vcpu_put().

For signifying stopped state of a vcpu, a host-controlled bit has
been used and is set/unset basically on the reverse as the old
CPUSTAT_RUNNING bit (including pushing it down into stop handling
proper in handle_stop()).

Cc: stable@kernel.org
Signed-off-by: Cornelia Huck 
Signed-off-by: Carsten Otte 
Signed-off-by: Avi Kivity

Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

2011-10-31T23:14:20+00:00

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (54 commits)
  [S390] Remove error checking from copy_oldmem_page()
  [S390] qdio: prevent dsci access without adapter interrupts
  [S390] irqstats: split IPI interrupt accounting
  [S390] add missing __tlb_flush_global() for !CONFIG_SMP
  [S390] sparse: fix sparse symbol shadow warning
  [S390] sparse: fix sparse NULL pointer warnings
  [S390] sparse: fix sparse warnings with __user pointers
  [S390] sparse: fix sparse warnings in math-emu
  [S390] sparse: fix sparse warnings about missing prototypes
  [S390] sparse: fix sparse ANSI-C warnings
  [S390] sparse: fix sparse static warnings
  [S390] sparse: fix access past end of array warnings
  [S390] dasd: prevent path verification before resume
  [S390] qdio: remove multicast polling
  [S390] qdio: reset outbound SBAL error states
  [S390] qdio: EQBS retry after CCQ 96
  [S390] qdio: add timestamp for last queue scan time
  [S390] Introduce get_clock_fast()
  [S390] kvm: Handle diagnose 0x10 (release pages)
  [S390] take mmap_sem when walking guest page table
  ...

[S390] kvm: Handle diagnose 0x10 (release pages)

2011-10-30T14:16:45+00:00

Linux on System z uses a ballooner based on diagnose 0x10. (aka as
collaborative memory management). This patch implements diagnose
0x10 on the guest address space.

Signed-off-by: Christian Borntraeger 
Signed-off-by: Martin Schwidefsky

KVM: s390: implement sigp external call

2011-10-30T10:24:05+00:00

Implement sigp external call, which might be required for guests that
issue an external call instead of an emergency signal for IPI.

This fixes an issue with "KVM: unknown SIGP: 0x02" when booting
such an SMP guest.

Signed-off-by: Christian Ehrhardt 
Signed-off-by: Christian Borntraeger 
Signed-off-by: Marcelo Tosatti

[S390] kvm: make sigp emerg smp capable

2011-07-24T08:48:22+00:00

SIGP emerg needs to pass the source vpu adress into __LC_CPU_ADDRESS of the
target guest.

Signed-off-by: Christian Ehrhardt 
Signed-off-by: Martin Schwidefsky

[S390] Use gmap translation for accessing guest memory

2011-07-24T08:48:21+00:00

This patch removes kvm-s390 internal assumption of a linear mapping
of guest address space to user space. Previously, guest memory was
translated to user addresses using a fixed offset (gmsor). The new
code uses gmap_fault to resolve guest addresses.

Signed-off-by: Carsten Otte 
Signed-off-by: Martin Schwidefsky

[S390] use gmap address spaces for kvm guest images

2011-07-24T08:48:21+00:00

This patch switches kvm from using (Qemu's) user address space to
Martin's gmap address space. This way QEMU does not have to use a
linker script in order to fit large guests at low addresses in its
address space.

Signed-off-by: Carsten Otte 
Signed-off-by: Martin Schwidefsky

[S390] kvm: handle tprot intercepts

2011-07-24T08:48:20+00:00

When running a kvm guest we can get intercepts for tprot, if the host
page table is read-only or not populated. This patch implements the
most common case (linux memory detection).
This also allows host copy on write for guest memory on newer systems.

Signed-off-by: Christian Borntraeger 
Signed-off-by: Martin Schwidefsky

KVM: Remove unnecessary divide operations

2010-08-01T07:47:30+00:00

This patch converts unnecessary divide and modulo operations
in the KVM large page related code into logical operations.
This allows to convert gfn_t to u64 while not breaking 32
bit builds.

Signed-off-by: Joerg Roedel 
Signed-off-by: Marcelo Tosatti