Am 06.02.2012 10:59, schrieb Christian Borntraeger:
+static int __sigp_restart(struct kvm_vcpu *vcpu, u16 cpu_addr)
+{
+ int rc = 0;
+ struct kvm_s390_float_interrupt *fi =vcpu-kvm-arch.float_int;
+
+ spin_lock(fi-lock);
+ if (fi-local_int[cpu_addr]-action_bits
On 05.01.2012 14:47, Marcelo Tosatti wrote:
Where is the userspace part?
The ucontrol patchset is intended to be used with a machine
simulator called cecsim. It can emulate an entire mainframe
including nested virtualisation and is used for development
and test of N+1 generation firmware on N
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
space and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch announces a new capability KVM_CAP_S390_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
valid modifier bit for now is KVM_VM_S390_UCONTROL.
This requires CAP_SYS_ADMIN privileges and creates a user controlled
virtual machine on s390 architectures.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Documentation/virtual/kvm/api.txt |7 ++-
arch/ia64/kvm/kvm-ia64.c
Hi Avi,
after some more discussion about how to do storage keys proper, I could
not come up with a sane and safe way of doing SSKE without either
over or underindicating the change bit in corner cases (leads to
corrupted guest memory or host kernel panic).
The storage key operations are
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
Avi wrote:
There is an alternative, if you can recognize this condition exactly
from the hardware fault, you can fault the lowcore yourself and retry.
This eliminates a user interface. Is this workable?
I've read your comment again, and understood it this time. Trouble is
that the kernel cannot
From: Carsten Otte co...@de.ibm.com
This patch introduces an interface to access the guest visible
storage keys. It supports three operations that model the behavior
that SSKE/ISKE/RRBE instructions would have if they were issued by
the guest. These instructions are all documented in the z
Hi Avi, Hi Marcelo,
I've integrated all review feedback:
- locking is fixed on the storage key path
- symbols have been renamed all over the place:
CONFIG_KVM_UCONTROL = CONFIG_KVM_S390_UCONTROL
KVM_CAP_UCONTROL = KVM_CAP_S390_UCONTROL
KVM_VM_UCONTROL =
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
This patch fixes definition of the idle_mask and the local_int array
in kvm_s390_float_interrupt. Previous definition had 64 cpus max
hardcoded instead of using KVM_MAX_VCPUS.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/include/asm/kvm_host.h |5 +++--
1 file changed, 3
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 ++-
1 file changed, 2 insertions(+), 1
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c | 30
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38 +
arch/s390/include/asm/kvm_host.h |4 +
arch/s390/include/asm/pgtable.h |1
arch/s390/kvm/kvm-s390.c | 110 --
arch/s390/mm
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch announces a new capability KVM_CAP_S390_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
valid modifier bit for now is KVM_VM_S390_UCONTROL.
This requires CAP_SYS_ADMIN privileges and creates a user controlled
virtual machine on s390 architectures.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Documentation/virtual/kvm/api.txt |7 ++-
arch/ia64/kvm/kvm-ia64.c
space and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
On 12.12.2011 10:13, Avi Kivity wrote:
Old kernels don't expose KVM_VM_REGULAR, so if people follow the
recommendations, their userspace won't build. Normal guests must be 0.
We can pretend we planned this all along by making the argument a flags
mask, and claiming bit 0 for UCONTROL.
That's
On 12.12.2011 10:15, Avi Kivity wrote:
Please add links to the documentation of the SIE thingie.
The format of the SIE control block is documented here:
http://www.vm.ibm.com/pubs/cpdacb/SIEBK.HTML
The native behavior of SSKE, ISKE and RRBE is documented in the
Principles of Operation:
for
On 12.12.2011 10:17, Avi Kivity wrote:
I've reconsidered and now want the s390 back. Sorry about that.
git-filter-branch can make the sedding painless.
So pain involved, I can operate sed s/old/new/g just fine ;-). Will
change it for the next version.
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On 12.12.2011 10:49, Avi Kivity wrote:
Do you have it in a tablet form factor?
Never trust a machine you can lift :-).
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On 09.12.2011 17:06, Alexander Graf wrote:
Same as this. It's an s390 specific hack, so it should be identified as such.
Naming is fine either way with me. Sasha Levin and Avi seemed to prefer
not to have _S390 in it.
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On 09.12.2011 14:46, heica...@linux.vnet.ibm.com wrote:
On Fri, Dec 09, 2011 at 01:49:35PM +0100, Carsten Otte wrote:
This patch introduces an interface to access the guest visible
storage keys. It supports three operations that model the behavior
that SSKE/ISKE/RRBE instructions would have
Hi Avi, Hi Marcelo,
this iteration of the patchset has two changes:
- Handling of null PTEs is fixed (thanks Heiko)
- Typo in comment is fixed (thanks Joachim)
so long,
Carsten
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are KVM_VM_REGULAR (defined to 0
for backward compatibility to old KVM_CREATE_VM) and
KVM_VM_UCONTROL for s390 only.
Note that the user controlled virtual machines require CAP_SYS_ADMIN
privileges.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt |7
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch fixes definition of the idle_mask and the local_int array
in kvm_s390_float_interrupt. Previous definition had 64 cpus max
hardcoded instead of using KVM_MAX_VCPUS.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/include/asm/kvm_host.h |5 +++--
1 file changed, 3
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c | 30
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
This patch announces a new capability KVM_CAP_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38 +
arch/s390/include/asm/kvm_host.h |4 +
arch/s390/include/asm/pgtable.h |1
arch/s390/kvm/kvm-s390.c | 108 --
arch/s390/mm
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 ++-
1 file changed, 2 insertions(+), 1
Hi Avi, Hi Marcelo,
this round includes feedback from Sasha Levin:
KVM_VM_S390_UCONTROL renamed to KVM_VM_UCONTROL
KVM_CAP_S390_UCONTROL renamed to KVM_CAP_UCONTROL
and a bugfix for a possible host change bit underindication (race)
in SSKE that was reported by Joachim off-list.
@Heiko: since
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
This patch announces a new capability KVM_CAP_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
are KVM_VM_REGULAR (defined to 0
for backward compatibility to old KVM_CREATE_VM) and
KVM_VM_UCONTROL for s390 only.
Note that the user controlled virtual machines require CAP_SYS_ADMIN
privileges.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt |7
and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch fixes definition of the idle_mask and the local_int array
in kvm_s390_float_interrupt. Previous definition had 64 cpus max
hardcoded instead of using KVM_MAX_VCPUS.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/include/asm/kvm_host.h
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38 +
arch/s390/include/asm/kvm_host.h |4 +
arch/s390/include/asm/pgtable.h |1
arch/s390/kvm/kvm-s390.c | 106 --
arch/s390/mm
On 09.12.2011 12:32, Alexander Graf wrote:
+KVM_CAP_UCONTROL
KVM_S390_CAP_UCONTROL
I'm happy either way. It seemed to me that the discussion between Avi
and Sasha for V2 of the patch series on this naming has concluded to
KVM_CAP_UCONTROL/KVM_VM_UCONTROL without _S390 in it.
On 09.12.2011 12:37, Alexander Graf wrote:
+#define KVM_S390_SIE_PAGE_OFFSET 1
Can we please make these a global number space? I don't want to have any user space code
accidently call this mmap while it's trying to find out if it can map the PIO
page. We already have a global number space
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
This patch fixes definition of the idle_mask and the local_int array
in kvm_s390_float_interrupt. Previous definition had 64 cpus max
hardcoded instead of using KVM_MAX_VCPUS.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/include/asm/kvm_host.h
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
are KVM_VM_REGULAR (defined to 0
for backward compatibility to old KVM_CREATE_VM) and
KVM_VM_UCONTROL for s390 only.
Note that the user controlled virtual machines require CAP_SYS_ADMIN
privileges.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt |7
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38 +
arch/s390/include/asm/kvm_host.h |4 +
arch/s390/include/asm/pgtable.h |1
arch/s390/kvm/kvm-s390.c | 110 --
arch/s390/mm
Hi Avi, Hi Marcelo,
this version includes review feedback from Heiko.
so long,
Carsten
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This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
This patch announces a new capability KVM_CAP_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
On 09.12.2011 13:52, Joachim von Buttlar wrote:
Shouldn't it be: page_set_storage_key(pte_val(*ptep), skey |
_PAGE_CHANGED, 1);
+/* avoid race clobbering
changed bit
*/
+pte_val(*ptep)
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
Hi Avi, Hi Marcelo,
I think I've integrated all feedback from last round. The race
between KVM_S390_ENABLE_UCONTROL and creation of vcpus has been
resolved by adding a parameter to KVM_CREATE_VM. The default
KVM_VM_REGULAR (==0) is backward compatible to KVM_CREATE_VM
without parameters, and
This patch announces a new capability KVM_CAP_S390_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38
arch/s390/kvm/kvm-s390.c | 50 +-
include/linux/kvm.h | 10 +++
3 files changed, 97 insertions(+), 1
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 38 ++
arch/s390/include/asm/kvm_host.h |4 +
arch/s390/include/asm/pgtable.h |1
arch/s390/kvm/kvm-s390.c | 103 --
arch/s390/mm
and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt | 14 ++
arch/s390/kvm/kvm-s390.c | 32 +++-
arch/s390/kvm/kvm-s390.h |1 +
include/linux/kvm.h
This patch makes sure user controlled virtual machines do not use a
system control area (sca). This is needed in order to create
virtual machines with more cpus than the size of the sca [64].
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
are KVM_VM_REGULAR (defined to 0
for backward compatibility to old KVM_CREATE_VM) and
KVM_VM_S390_UCONTROL for s390 only.
Note that the user controlled virtual machines require CAP_SYS_ADMIN
privileges.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
Documentation/virtual/kvm/api.txt |7
This patch fixes definition of the idle_mask and the local_int array
in kvm_s390_float_interrupt. Previous definition had 64 cpus max
hardcoded instead of using KVM_MAX_VCPUS.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/include/asm/kvm_host.h
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
This patch exports the s390 SIE hardware control block to userspace
via the mapping of the vcpu file descriptor. In order to do so,
a new arch callback named kvm_arch_vcpu_fault is introduced for all
architectures. It allows to map architecture specific pages.
Signed-off-by: Carsten Otte co
This patch disables in-kernel handling of SIE intercepts for user
controlled virtual machines. All intercepts are passed to userspace
via KVM_EXIT_SIE exit reason just like SIE intercepts that cannot be
handled in-kernel for regular KVM guests.
Signed-off-by: Carsten Otte co...@de.ibm.com
This patch fixes the return code of kvm_arch_vcpu_ioctl in case
of an unkown ioctl number.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
On 08.12.2011 10:25, Sasha Levin wrote:
Why is it s390 specific? why isn't it KVM_VM_UCONTROL which is currently
only implemented on s390?
Good point. Maybe the subject line for the patch should be fixed along
with that ;-)
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On 08.12.2011 11:18, Alexander Graf wrote:
If you really have to do this, please
1) make it s390 only. I don't even want to have to see this uglyness in other
archs
It pretty much is. The only interference is a) checking the machine
type in arch_init_vm now that I've introduced that
On 01.12.2011 14:33, Avi Kivity wrote:
Okay, I read the code and I even think I understood a little bit of it.
In general the patches look okay, I had only minor comments. But please
do document all the new interfaces.
Since when do we have api documentation? Tssj, kvm has grown up since last
way.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c | 50 ++-
include/linux/kvm.h |7 ++
2 files changed, 56 insertions(+), 1 deletion(-)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
is not present. Normally
the kernel takes care of this [handle_validity() in
arch/s390/kvm/intercept.c] but since the kernel does not handle
intercepts for user controlled virtual machines, userspace needs to
be able to handle this condition.
Signed-off-by: Carsten Otte co...@de.ibm.com
Hi Avi, Hi Marcelo,
this patch series introduces an interface to allow a privileged userspace
program to control a KVM virtual machine. The interface is intended for
use by a machine simulator called CECSIM that can simulate an entire
mainframe machine with nested virtualization and I/O for the
This patch disables the in-kernel interrupt stack for KVM virtual
machines that are controlled by user. Userspace has to take care
of handling interrupts on its own.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
machine must not have
any memory slots installed, and no virtual cpus defined.
Note that the user controlled virtual machines require CAP_SYS_ADMIN
privileges.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/Kconfig|9 +
arch/s390/kvm/kvm-s390.c | 30
.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/include/asm/kvm_host.h
===
--- linux-2.5-cecsim.orig/arch/s390/include/asm/kvm_host.h
+++ linux-2.5-cecsim/arch/s390/include/asm/kvm_host.h
@@ -25,6
and then continue to run the
virtual cpu.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
Index: linux-2.5-cecsim/arch/s390/kvm/kvm-s390.c
===
--- linux-2.5-cecsim.orig/arch/s390/kvm/kvm-s390.c
+++ linux-2.5-cecsim/arch/s390/kvm/kvm-s390
This patch announces a new capability KVM_CAP_S390_UCONTROL that
indicates that kvm can now support virtual machines that are
controlled by userspace.
Signed-off-by: Carsten Otte co...@de.ibm.com
---
---
arch/s390/kvm/kvm-s390.c |3 +++
include/linux/kvm.h |1 +
2 files changed, 4
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