2008-03-25 18:47:31 +01:00
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/*
|
2012-07-20 11:15:04 +02:00
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* handling interprocessor communication
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2008-03-25 18:47:31 +01:00
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*
|
2012-07-20 11:15:04 +02:00
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* Copyright IBM Corp. 2008, 2009
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2008-03-25 18:47:31 +01:00
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
|
2009-05-20 15:34:55 +02:00
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* Christian Ehrhardt <ehrhardt@de.ibm.com>
|
2008-03-25 18:47:31 +01:00
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*/
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#include <linux/kvm.h>
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|
|
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#include <linux/kvm_host.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 09:04:11 +01:00
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|
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#include <linux/slab.h>
|
2012-06-04 12:55:15 +02:00
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|
|
#include <asm/sigp.h>
|
2008-03-25 18:47:31 +01:00
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#include "gaccess.h"
|
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#include "kvm-s390.h"
|
2012-07-23 17:20:29 +02:00
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#include "trace.h"
|
2008-03-25 18:47:31 +01:00
|
|
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|
2008-07-25 15:51:00 +02:00
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static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
|
2012-01-11 11:20:32 +01:00
|
|
|
u64 *reg)
|
2008-03-25 18:47:31 +01:00
|
|
|
{
|
2008-06-27 15:05:40 +02:00
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
2008-03-25 18:47:31 +01:00
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_NOT_OPERATIONAL;
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_lock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
if (fi->local_int[cpu_addr] == NULL)
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2011-11-17 11:00:41 +01:00
|
|
|
else if (!(atomic_read(fi->local_int[cpu_addr]->cpuflags)
|
2012-06-26 16:06:41 +02:00
|
|
|
& (CPUSTAT_ECALL_PEND | CPUSTAT_STOPPED)))
|
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
|
|
|
else {
|
2008-03-25 18:47:31 +01:00
|
|
|
*reg &= 0xffffffff00000000UL;
|
2012-06-26 16:06:41 +02:00
|
|
|
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
|
|
|
|
& CPUSTAT_ECALL_PEND)
|
|
|
|
*reg |= SIGP_STATUS_EXT_CALL_PENDING;
|
|
|
|
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
|
|
|
|
& CPUSTAT_STOPPED)
|
|
|
|
*reg |= SIGP_STATUS_STOPPED;
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_STATUS_STORED;
|
2008-03-25 18:47:31 +01:00
|
|
|
}
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_unlock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
|
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|
|
VCPU_EVENT(vcpu, 4, "sensed status of cpu %x rc %x", cpu_addr, rc);
|
|
|
|
return rc;
|
|
|
|
}
|
|
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|
|
static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
|
|
|
|
{
|
2008-06-27 15:05:40 +02:00
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
|
|
|
struct kvm_s390_local_interrupt *li;
|
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|
struct kvm_s390_interrupt_info *inti;
|
2008-03-25 18:47:31 +01:00
|
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|
int rc;
|
|
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|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
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|
return SIGP_CC_NOT_OPERATIONAL;
|
2008-03-25 18:47:31 +01:00
|
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|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
inti->type = KVM_S390_INT_EMERGENCY;
|
2011-10-18 12:27:15 +02:00
|
|
|
inti->emerg.code = vcpu->vcpu_id;
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_lock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
li = fi->local_int[cpu_addr];
|
|
|
|
if (li == NULL) {
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2008-03-25 18:47:31 +01:00
|
|
|
kfree(inti);
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_add_tail(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
|
|
|
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
|
2013-06-12 13:54:55 +02:00
|
|
|
if (waitqueue_active(li->wq))
|
|
|
|
wake_up_interruptible(li->wq);
|
2008-03-25 18:47:31 +01:00
|
|
|
spin_unlock_bh(&li->lock);
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2011-10-18 12:27:15 +02:00
|
|
|
VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr);
|
|
|
|
unlock:
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
return rc;
|
|
|
|
}
|
|
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|
|
|
|
|
static int __sigp_external_call(struct kvm_vcpu *vcpu, u16 cpu_addr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
|
|
|
struct kvm_s390_local_interrupt *li;
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
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|
int rc;
|
|
|
|
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|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_NOT_OPERATIONAL;
|
2011-10-18 12:27:15 +02:00
|
|
|
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
inti->type = KVM_S390_INT_EXTERNAL_CALL;
|
|
|
|
inti->extcall.code = vcpu->vcpu_id;
|
|
|
|
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
li = fi->local_int[cpu_addr];
|
|
|
|
if (li == NULL) {
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2011-10-18 12:27:15 +02:00
|
|
|
kfree(inti);
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_add_tail(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
|
|
|
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
|
2013-06-12 13:54:55 +02:00
|
|
|
if (waitqueue_active(li->wq))
|
|
|
|
wake_up_interruptible(li->wq);
|
2011-10-18 12:27:15 +02:00
|
|
|
spin_unlock_bh(&li->lock);
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2011-10-18 12:27:15 +02:00
|
|
|
VCPU_EVENT(vcpu, 4, "sent sigp ext call to cpu %x", cpu_addr);
|
2008-03-25 18:47:31 +01:00
|
|
|
unlock:
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_unlock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2009-05-20 15:34:55 +02:00
|
|
|
static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
|
2008-03-25 18:47:31 +01:00
|
|
|
{
|
2008-06-27 15:05:40 +02:00
|
|
|
struct kvm_s390_interrupt_info *inti;
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2010-06-08 18:58:11 +02:00
|
|
|
inti = kzalloc(sizeof(*inti), GFP_ATOMIC);
|
2008-03-25 18:47:31 +01:00
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
inti->type = KVM_S390_SIGP_STOP;
|
|
|
|
|
|
|
|
spin_lock_bh(&li->lock);
|
2013-01-15 11:17:29 +01:00
|
|
|
if ((atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
|
|
|
|
kfree(inti);
|
2012-02-06 10:59:05 +01:00
|
|
|
goto out;
|
2013-01-15 11:17:29 +01:00
|
|
|
}
|
2008-03-25 18:47:31 +01:00
|
|
|
list_add_tail(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
|
|
|
atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);
|
2009-05-20 15:34:55 +02:00
|
|
|
li->action_bits |= action;
|
2013-06-12 13:54:55 +02:00
|
|
|
if (waitqueue_active(li->wq))
|
|
|
|
wake_up_interruptible(li->wq);
|
2012-02-06 10:59:05 +01:00
|
|
|
out:
|
2008-03-25 18:47:31 +01:00
|
|
|
spin_unlock_bh(&li->lock);
|
2009-05-20 15:34:55 +02:00
|
|
|
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_ORDER_CODE_ACCEPTED;
|
2009-05-20 15:34:55 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static int __sigp_stop(struct kvm_vcpu *vcpu, u16 cpu_addr, int action)
|
|
|
|
{
|
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
|
|
|
struct kvm_s390_local_interrupt *li;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_NOT_OPERATIONAL;
|
2009-05-20 15:34:55 +02:00
|
|
|
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
li = fi->local_int[cpu_addr];
|
|
|
|
if (li == NULL) {
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2009-05-20 15:34:55 +02:00
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
rc = __inject_sigp_stop(li, action);
|
|
|
|
|
2008-03-25 18:47:31 +01:00
|
|
|
unlock:
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_unlock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
VCPU_EVENT(vcpu, 4, "sent sigp stop to cpu %x", cpu_addr);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2009-05-20 15:34:55 +02:00
|
|
|
int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action)
|
|
|
|
{
|
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
return __inject_sigp_stop(li, action);
|
|
|
|
}
|
|
|
|
|
2008-03-25 18:47:31 +01:00
|
|
|
static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
|
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
switch (parameter & 0xff) {
|
|
|
|
case 0:
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
case 2:
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
|
|
|
default:
|
2010-02-26 22:37:41 +01:00
|
|
|
rc = -EOPNOTSUPP;
|
2008-03-25 18:47:31 +01:00
|
|
|
}
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
|
2012-01-11 11:20:32 +01:00
|
|
|
u64 *reg)
|
2008-03-25 18:47:31 +01:00
|
|
|
{
|
2008-06-27 15:05:40 +02:00
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
2009-08-07 10:39:25 +02:00
|
|
|
struct kvm_s390_local_interrupt *li = NULL;
|
2008-06-27 15:05:40 +02:00
|
|
|
struct kvm_s390_interrupt_info *inti;
|
2008-03-25 18:47:31 +01:00
|
|
|
int rc;
|
|
|
|
u8 tmp;
|
|
|
|
|
|
|
|
/* make sure that the new value is valid memory */
|
|
|
|
address = address & 0x7fffe000u;
|
2011-07-24 10:48:22 +02:00
|
|
|
if (copy_from_guest_absolute(vcpu, &tmp, address, 1) ||
|
|
|
|
copy_from_guest_absolute(vcpu, &tmp, address + PAGE_SIZE, 1)) {
|
2012-06-26 16:06:39 +02:00
|
|
|
*reg &= 0xffffffff00000000UL;
|
2012-06-04 12:55:15 +02:00
|
|
|
*reg |= SIGP_STATUS_INVALID_PARAMETER;
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_STATUS_STORED;
|
2008-03-25 18:47:31 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_BUSY;
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_lock(&fi->lock);
|
2009-08-07 10:39:25 +02:00
|
|
|
if (cpu_addr < KVM_MAX_VCPUS)
|
|
|
|
li = fi->local_int[cpu_addr];
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2009-08-07 10:39:25 +02:00
|
|
|
if (li == NULL) {
|
2012-06-26 16:06:39 +02:00
|
|
|
*reg &= 0xffffffff00000000UL;
|
|
|
|
*reg |= SIGP_STATUS_INCORRECT_STATE;
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_STATUS_STORED;
|
2008-03-25 18:47:31 +01:00
|
|
|
kfree(inti);
|
|
|
|
goto out_fi;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
/* cpu must be in stopped state */
|
2011-11-17 11:00:41 +01:00
|
|
|
if (!(atomic_read(li->cpuflags) & CPUSTAT_STOPPED)) {
|
2012-06-26 16:06:39 +02:00
|
|
|
*reg &= 0xffffffff00000000UL;
|
|
|
|
*reg |= SIGP_STATUS_INCORRECT_STATE;
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_STATUS_STORED;
|
2008-03-25 18:47:31 +01:00
|
|
|
kfree(inti);
|
|
|
|
goto out_li;
|
|
|
|
}
|
|
|
|
|
|
|
|
inti->type = KVM_S390_SIGP_SET_PREFIX;
|
|
|
|
inti->prefix.address = address;
|
|
|
|
|
|
|
|
list_add_tail(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
2013-06-12 13:54:55 +02:00
|
|
|
if (waitqueue_active(li->wq))
|
|
|
|
wake_up_interruptible(li->wq);
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2008-03-25 18:47:31 +01:00
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 4, "set prefix of cpu %02x to %x", cpu_addr, address);
|
|
|
|
out_li:
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
out_fi:
|
2009-05-12 17:21:50 +02:00
|
|
|
spin_unlock(&fi->lock);
|
2008-03-25 18:47:31 +01:00
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2011-11-17 11:00:42 +01:00
|
|
|
static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
|
2012-01-11 11:20:32 +01:00
|
|
|
u64 *reg)
|
2011-11-17 11:00:42 +01:00
|
|
|
{
|
|
|
|
int rc;
|
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
|
|
|
|
|
|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_NOT_OPERATIONAL;
|
2011-11-17 11:00:42 +01:00
|
|
|
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
if (fi->local_int[cpu_addr] == NULL)
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2011-11-17 11:00:42 +01:00
|
|
|
else {
|
|
|
|
if (atomic_read(fi->local_int[cpu_addr]->cpuflags)
|
|
|
|
& CPUSTAT_RUNNING) {
|
|
|
|
/* running */
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2011-11-17 11:00:42 +01:00
|
|
|
} else {
|
|
|
|
/* not running */
|
|
|
|
*reg &= 0xffffffff00000000UL;
|
2012-06-04 12:55:15 +02:00
|
|
|
*reg |= SIGP_STATUS_NOT_RUNNING;
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_STATUS_STORED;
|
2011-11-17 11:00:42 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 4, "sensed running status of cpu %x rc %x", cpu_addr,
|
|
|
|
rc);
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2012-02-08 08:28:29 +01:00
|
|
|
static int __sigp_restart(struct kvm_vcpu *vcpu, u16 cpu_addr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
|
|
|
|
struct kvm_s390_local_interrupt *li;
|
2012-06-26 16:06:40 +02:00
|
|
|
int rc = SIGP_CC_ORDER_CODE_ACCEPTED;
|
2012-02-08 08:28:29 +01:00
|
|
|
|
|
|
|
if (cpu_addr >= KVM_MAX_VCPUS)
|
2012-06-26 16:06:40 +02:00
|
|
|
return SIGP_CC_NOT_OPERATIONAL;
|
2012-02-08 08:28:29 +01:00
|
|
|
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
li = fi->local_int[cpu_addr];
|
|
|
|
if (li == NULL) {
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_NOT_OPERATIONAL;
|
2012-02-08 08:28:29 +01:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
if (li->action_bits & ACTION_STOP_ON_STOP)
|
2012-06-26 16:06:40 +02:00
|
|
|
rc = SIGP_CC_BUSY;
|
2012-02-08 08:28:29 +01:00
|
|
|
else
|
|
|
|
VCPU_EVENT(vcpu, 4, "sigp restart %x to handle userspace",
|
|
|
|
cpu_addr);
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
out:
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2008-03-25 18:47:31 +01:00
|
|
|
int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
int r1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
|
|
|
|
int r3 = vcpu->arch.sie_block->ipa & 0x000f;
|
|
|
|
u32 parameter;
|
2012-01-11 11:20:32 +01:00
|
|
|
u16 cpu_addr = vcpu->run->s.regs.gprs[r3];
|
2008-03-25 18:47:31 +01:00
|
|
|
u8 order_code;
|
|
|
|
int rc;
|
|
|
|
|
2008-11-17 14:50:35 +01:00
|
|
|
/* sigp in userspace can exit */
|
|
|
|
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
|
2013-06-20 17:21:59 +02:00
|
|
|
return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
|
2008-11-17 14:50:35 +01:00
|
|
|
|
2012-12-20 15:32:07 +01:00
|
|
|
order_code = kvm_s390_get_base_disp_rs(vcpu);
|
2008-03-25 18:47:31 +01:00
|
|
|
|
|
|
|
if (r1 % 2)
|
2012-01-11 11:20:32 +01:00
|
|
|
parameter = vcpu->run->s.regs.gprs[r1];
|
2008-03-25 18:47:31 +01:00
|
|
|
else
|
2012-01-11 11:20:32 +01:00
|
|
|
parameter = vcpu->run->s.regs.gprs[r1 + 1];
|
2008-03-25 18:47:31 +01:00
|
|
|
|
2012-07-23 17:20:29 +02:00
|
|
|
trace_kvm_s390_handle_sigp(vcpu, order_code, cpu_addr, parameter);
|
2008-03-25 18:47:31 +01:00
|
|
|
switch (order_code) {
|
|
|
|
case SIGP_SENSE:
|
|
|
|
vcpu->stat.instruction_sigp_sense++;
|
|
|
|
rc = __sigp_sense(vcpu, cpu_addr,
|
2012-01-11 11:20:32 +01:00
|
|
|
&vcpu->run->s.regs.gprs[r1]);
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
2011-10-18 12:27:15 +02:00
|
|
|
case SIGP_EXTERNAL_CALL:
|
|
|
|
vcpu->stat.instruction_sigp_external_call++;
|
|
|
|
rc = __sigp_external_call(vcpu, cpu_addr);
|
|
|
|
break;
|
2012-06-04 12:55:15 +02:00
|
|
|
case SIGP_EMERGENCY_SIGNAL:
|
2008-03-25 18:47:31 +01:00
|
|
|
vcpu->stat.instruction_sigp_emergency++;
|
|
|
|
rc = __sigp_emergency(vcpu, cpu_addr);
|
|
|
|
break;
|
|
|
|
case SIGP_STOP:
|
|
|
|
vcpu->stat.instruction_sigp_stop++;
|
2009-05-20 15:34:55 +02:00
|
|
|
rc = __sigp_stop(vcpu, cpu_addr, ACTION_STOP_ON_STOP);
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
2012-06-04 12:55:15 +02:00
|
|
|
case SIGP_STOP_AND_STORE_STATUS:
|
2008-03-25 18:47:31 +01:00
|
|
|
vcpu->stat.instruction_sigp_stop++;
|
2012-02-06 10:59:06 +01:00
|
|
|
rc = __sigp_stop(vcpu, cpu_addr, ACTION_STORE_ON_STOP |
|
|
|
|
ACTION_STOP_ON_STOP);
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
2012-06-04 12:55:15 +02:00
|
|
|
case SIGP_SET_ARCHITECTURE:
|
2008-03-25 18:47:31 +01:00
|
|
|
vcpu->stat.instruction_sigp_arch++;
|
|
|
|
rc = __sigp_set_arch(vcpu, parameter);
|
|
|
|
break;
|
|
|
|
case SIGP_SET_PREFIX:
|
|
|
|
vcpu->stat.instruction_sigp_prefix++;
|
|
|
|
rc = __sigp_set_prefix(vcpu, cpu_addr, parameter,
|
2012-01-11 11:20:32 +01:00
|
|
|
&vcpu->run->s.regs.gprs[r1]);
|
2008-03-25 18:47:31 +01:00
|
|
|
break;
|
2011-11-17 11:00:42 +01:00
|
|
|
case SIGP_SENSE_RUNNING:
|
|
|
|
vcpu->stat.instruction_sigp_sense_running++;
|
|
|
|
rc = __sigp_sense_running(vcpu, cpu_addr,
|
2012-01-11 11:20:32 +01:00
|
|
|
&vcpu->run->s.regs.gprs[r1]);
|
2011-11-17 11:00:42 +01:00
|
|
|
break;
|
2008-03-25 18:47:31 +01:00
|
|
|
case SIGP_RESTART:
|
|
|
|
vcpu->stat.instruction_sigp_restart++;
|
2012-02-08 08:28:29 +01:00
|
|
|
rc = __sigp_restart(vcpu, cpu_addr);
|
2012-06-26 16:06:40 +02:00
|
|
|
if (rc == SIGP_CC_BUSY)
|
2012-02-08 08:28:29 +01:00
|
|
|
break;
|
2008-03-25 18:47:31 +01:00
|
|
|
/* user space must know about restart */
|
|
|
|
default:
|
2010-02-26 22:37:41 +01:00
|
|
|
return -EOPNOTSUPP;
|
2008-03-25 18:47:31 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (rc < 0)
|
|
|
|
return rc;
|
|
|
|
|
|
|
|
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
|
|
|
|
vcpu->arch.sie_block->gpsw.mask |= (rc & 3ul) << 44;
|
|
|
|
return 0;
|
|
|
|
}
|