kernel.git/arch/s390/kvm, branch linux-3.11.y

KVM: s390: fix pfmf non-quiescing control handling

2013-07-29T07:02:30Z

Fix the test within handle_pfmf() if the host has the NQ key-setting facility installed. Right now the code would incorrectly generate a program check in the guest if the NQ control bit for a pfmf request was set and if the host has the NQ key-setting facility installed. Signed-off-by: Heiko Carstens Reviewed-by: Thomas Huth Signed-off-by: Christian Borntraeger Signed-off-by: Paolo Bonzini

KVM: s390: move kvm_guest_enter,exit closer to sie

2013-07-29T07:02:18Z

Any uaccess between guest_enter and guest_exit could trigger a page fault, the page fault handler would handle it as a guest fault and translate a user address as guest address. Signed-off-by: Dominik Dingel Signed-off-by: Christian Borntraeger CC: stable@vger.kernel.org Signed-off-by: Paolo Bonzini

KVM: s390: Fixed priority of execution in STSI

2013-06-20T21:33:01Z

Added some missing validity checks for the operands and fixed the priority of exceptions for some function codes according to the "Principles of Operation" document. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Reworked LCTL and LCTLG instructions

2013-06-20T21:32:39Z

LCTL and LCTLG are also privileged instructions, thus there is no need for treating them separately from the other instructions in priv.c. So this patch moves these two instructions to priv.c, adds a check for supervisor state and simplifies the "handle_eb" instruction decoding by merging the two eb_handlers jump tables from intercept.c and priv.c into one table only. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Check for access exceptions during TPI

2013-06-20T21:32:13Z

When a guest calls the TPI instruction, the second operand address could point to an invalid location. In this case the problem should be signaled to the guest by throwing an access exception. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Check for PSTATE when handling DIAGNOSE

2013-06-20T21:31:59Z

DIAGNOSE is a privileged instruction and thus we must make sure that we are in supervisor mode before taking any other actions. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Privileged operation checks moved to instruction handlers

2013-06-20T21:31:43Z

We need more fine-grained control about the point in time when we check for privileged instructions, since the exceptions that can happen during an instruction have a well-defined priority. For example, for the PFMF instruction, the check for PGM_PRIVILEGED_OP must happen after the check for PGM_OPERATION since the latter has a higher precedence - thus the check for privileged operation must not be done in kvm_s390_handle_b9() already. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Privileged operation check for TPROT

2013-06-20T21:31:15Z

TPROT is a privileged instruction and thus should generate a privileged operation exception when the problem state bit is not cleared in the PSW. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Renamed PGM_PRIVILEGED_OPERATION

2013-06-20T21:31:04Z

Renamed the PGM_PRIVILEGED_OPERATION define to PGM_PRIVILEGED_OP since this define was way longer than the other PGM_* defines and caused the code often to exceed the 80 columns limit when not split to multiple lines. Signed-off-by: Thomas Huth Acked-by: Cornelia Huck Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini

KVM: s390: Fix epsw instruction decoding

2013-06-17T15:10:38Z

The handle_epsw() function calculated the first register in the wrong way, so that it always used r0 by mistake. Now the code uses the common helper function for decoding the registers of rre functions instead to avoid such mistakes. Signed-off-by: Thomas Huth Reviewed-by: Christian Borntraeger Signed-off-by: Cornelia Huck Signed-off-by: Paolo Bonzini