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-rw-r--r--arch/s390/kvm/Makefile3
-rw-r--r--arch/s390/kvm/diag.c3
-rw-r--r--arch/s390/kvm/intercept.c124
-rw-r--r--arch/s390/kvm/interrupt.c18
-rw-r--r--arch/s390/kvm/kvm-s390.c105
-rw-r--r--arch/s390/kvm/kvm-s390.h14
-rw-r--r--arch/s390/kvm/priv.c274
-rw-r--r--arch/s390/kvm/sigp.c19
8 files changed, 367 insertions, 193 deletions
diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile
index 8fe9d65a458..40b4c6470f8 100644
--- a/arch/s390/kvm/Makefile
+++ b/arch/s390/kvm/Makefile
@@ -6,7 +6,8 @@
# it under the terms of the GNU General Public License (version 2 only)
# as published by the Free Software Foundation.
-common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o eventfd.o)
+KVM := ../../../virt/kvm
+common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o
ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index 1c01a991298..3074475c8ae 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -132,6 +132,9 @@ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu)
{
int code = (vcpu->arch.sie_block->ipb & 0xfff0000) >> 16;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
trace_kvm_s390_handle_diag(vcpu, code);
switch (code) {
case 0x10:
diff --git a/arch/s390/kvm/intercept.c b/arch/s390/kvm/intercept.c
index b7d1b2edeeb..5ee56e5acc2 100644
--- a/arch/s390/kvm/intercept.c
+++ b/arch/s390/kvm/intercept.c
@@ -22,87 +22,6 @@
#include "trace.h"
#include "trace-s390.h"
-static int handle_lctlg(struct kvm_vcpu *vcpu)
-{
- int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
- int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
- u64 useraddr;
- int reg, rc;
-
- vcpu->stat.instruction_lctlg++;
-
- useraddr = kvm_s390_get_base_disp_rsy(vcpu);
-
- if (useraddr & 7)
- return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
-
- reg = reg1;
-
- VCPU_EVENT(vcpu, 5, "lctlg r1:%x, r3:%x, addr:%llx", reg1, reg3,
- useraddr);
- trace_kvm_s390_handle_lctl(vcpu, 1, reg1, reg3, useraddr);
-
- do {
- rc = get_guest(vcpu, vcpu->arch.sie_block->gcr[reg],
- (u64 __user *) useraddr);
- if (rc)
- return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- useraddr += 8;
- if (reg == reg3)
- break;
- reg = (reg + 1) % 16;
- } while (1);
- return 0;
-}
-
-static int handle_lctl(struct kvm_vcpu *vcpu)
-{
- int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
- int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
- u64 useraddr;
- u32 val = 0;
- int reg, rc;
-
- vcpu->stat.instruction_lctl++;
-
- useraddr = kvm_s390_get_base_disp_rs(vcpu);
-
- if (useraddr & 3)
- return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
-
- VCPU_EVENT(vcpu, 5, "lctl r1:%x, r3:%x, addr:%llx", reg1, reg3,
- useraddr);
- trace_kvm_s390_handle_lctl(vcpu, 0, reg1, reg3, useraddr);
-
- reg = reg1;
- do {
- rc = get_guest(vcpu, val, (u32 __user *) useraddr);
- if (rc)
- return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
- vcpu->arch.sie_block->gcr[reg] &= 0xffffffff00000000ul;
- vcpu->arch.sie_block->gcr[reg] |= val;
- useraddr += 4;
- if (reg == reg3)
- break;
- reg = (reg + 1) % 16;
- } while (1);
- return 0;
-}
-
-static const intercept_handler_t eb_handlers[256] = {
- [0x2f] = handle_lctlg,
- [0x8a] = kvm_s390_handle_priv_eb,
-};
-
-static int handle_eb(struct kvm_vcpu *vcpu)
-{
- intercept_handler_t handler;
-
- handler = eb_handlers[vcpu->arch.sie_block->ipb & 0xff];
- if (handler)
- return handler(vcpu);
- return -EOPNOTSUPP;
-}
static const intercept_handler_t instruction_handlers[256] = {
[0x01] = kvm_s390_handle_01,
@@ -110,10 +29,10 @@ static const intercept_handler_t instruction_handlers[256] = {
[0x83] = kvm_s390_handle_diag,
[0xae] = kvm_s390_handle_sigp,
[0xb2] = kvm_s390_handle_b2,
- [0xb7] = handle_lctl,
+ [0xb7] = kvm_s390_handle_lctl,
[0xb9] = kvm_s390_handle_b9,
[0xe5] = kvm_s390_handle_e5,
- [0xeb] = handle_eb,
+ [0xeb] = kvm_s390_handle_eb,
};
static int handle_noop(struct kvm_vcpu *vcpu)
@@ -174,47 +93,12 @@ static int handle_stop(struct kvm_vcpu *vcpu)
static int handle_validity(struct kvm_vcpu *vcpu)
{
- unsigned long vmaddr;
int viwhy = vcpu->arch.sie_block->ipb >> 16;
- int rc;
vcpu->stat.exit_validity++;
trace_kvm_s390_intercept_validity(vcpu, viwhy);
- if (viwhy == 0x37) {
- vmaddr = gmap_fault(vcpu->arch.sie_block->prefix,
- vcpu->arch.gmap);
- if (IS_ERR_VALUE(vmaddr)) {
- rc = -EOPNOTSUPP;
- goto out;
- }
- rc = fault_in_pages_writeable((char __user *) vmaddr,
- PAGE_SIZE);
- if (rc) {
- /* user will receive sigsegv, exit to user */
- rc = -EOPNOTSUPP;
- goto out;
- }
- vmaddr = gmap_fault(vcpu->arch.sie_block->prefix + PAGE_SIZE,
- vcpu->arch.gmap);
- if (IS_ERR_VALUE(vmaddr)) {
- rc = -EOPNOTSUPP;
- goto out;
- }
- rc = fault_in_pages_writeable((char __user *) vmaddr,
- PAGE_SIZE);
- if (rc) {
- /* user will receive sigsegv, exit to user */
- rc = -EOPNOTSUPP;
- goto out;
- }
- } else
- rc = -EOPNOTSUPP;
-
-out:
- if (rc)
- VCPU_EVENT(vcpu, 2, "unhandled validity intercept code %d",
- viwhy);
- return rc;
+ WARN_ONCE(true, "kvm: unhandled validity intercept 0x%x\n", viwhy);
+ return -EOPNOTSUPP;
}
static int handle_instruction(struct kvm_vcpu *vcpu)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 5c948177529..7f35cb33e51 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -438,7 +438,7 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
no_timer:
spin_lock(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
- add_wait_queue(&vcpu->arch.local_int.wq, &wait);
+ add_wait_queue(&vcpu->wq, &wait);
while (list_empty(&vcpu->arch.local_int.list) &&
list_empty(&vcpu->arch.local_int.float_int->list) &&
(!vcpu->arch.local_int.timer_due) &&
@@ -452,7 +452,7 @@ no_timer:
}
__unset_cpu_idle(vcpu);
__set_current_state(TASK_RUNNING);
- remove_wait_queue(&vcpu->arch.local_int.wq, &wait);
+ remove_wait_queue(&vcpu->wq, &wait);
spin_unlock_bh(&vcpu->arch.local_int.lock);
spin_unlock(&vcpu->arch.local_int.float_int->lock);
hrtimer_try_to_cancel(&vcpu->arch.ckc_timer);
@@ -465,8 +465,8 @@ void kvm_s390_tasklet(unsigned long parm)
spin_lock(&vcpu->arch.local_int.lock);
vcpu->arch.local_int.timer_due = 1;
- if (waitqueue_active(&vcpu->arch.local_int.wq))
- wake_up_interruptible(&vcpu->arch.local_int.wq);
+ if (waitqueue_active(&vcpu->wq))
+ wake_up_interruptible(&vcpu->wq);
spin_unlock(&vcpu->arch.local_int.lock);
}
@@ -613,7 +613,7 @@ int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
spin_lock_bh(&li->lock);
list_add(&inti->list, &li->list);
atomic_set(&li->active, 1);
- BUG_ON(waitqueue_active(&li->wq));
+ BUG_ON(waitqueue_active(li->wq));
spin_unlock_bh(&li->lock);
return 0;
}
@@ -746,8 +746,8 @@ int kvm_s390_inject_vm(struct kvm *kvm,
li = fi->local_int[sigcpu];
spin_lock_bh(&li->lock);
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&li->wq);
+ if (waitqueue_active(li->wq))
+ wake_up_interruptible(li->wq);
spin_unlock_bh(&li->lock);
spin_unlock(&fi->lock);
mutex_unlock(&kvm->lock);
@@ -832,8 +832,8 @@ int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
if (inti->type == KVM_S390_SIGP_STOP)
li->action_bits |= ACTION_STOP_ON_STOP;
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&vcpu->arch.local_int.wq);
+ if (waitqueue_active(&vcpu->wq))
+ wake_up_interruptible(&vcpu->wq);
spin_unlock_bh(&li->lock);
mutex_unlock(&vcpu->kvm->lock);
return 0;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index c1c7c683fa2..ba694d2ba51 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -59,6 +59,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) },
{ "deliver_program_interruption", VCPU_STAT(deliver_program_int) },
{ "exit_wait_state", VCPU_STAT(exit_wait_state) },
+ { "instruction_pfmf", VCPU_STAT(instruction_pfmf) },
{ "instruction_stidp", VCPU_STAT(instruction_stidp) },
{ "instruction_spx", VCPU_STAT(instruction_spx) },
{ "instruction_stpx", VCPU_STAT(instruction_stpx) },
@@ -84,6 +85,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
};
static unsigned long long *facilities;
+static struct gmap_notifier gmap_notifier;
/* Section: not file related */
int kvm_arch_hardware_enable(void *garbage)
@@ -96,13 +98,18 @@ void kvm_arch_hardware_disable(void *garbage)
{
}
+static void kvm_gmap_notifier(struct gmap *gmap, unsigned long address);
+
int kvm_arch_hardware_setup(void)
{
+ gmap_notifier.notifier_call = kvm_gmap_notifier;
+ gmap_register_ipte_notifier(&gmap_notifier);
return 0;
}
void kvm_arch_hardware_unsetup(void)
{
+ gmap_unregister_ipte_notifier(&gmap_notifier);
}
void kvm_arch_check_processor_compat(void *rtn)
@@ -239,6 +246,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
kvm->arch.gmap = gmap_alloc(current->mm);
if (!kvm->arch.gmap)
goto out_nogmap;
+ kvm->arch.gmap->private = kvm;
}
kvm->arch.css_support = 0;
@@ -270,7 +278,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
free_page((unsigned long)(vcpu->arch.sie_block));
kvm_vcpu_uninit(vcpu);
- kfree(vcpu);
+ kmem_cache_free(kvm_vcpu_cache, vcpu);
}
static void kvm_free_vcpus(struct kvm *kvm)
@@ -309,6 +317,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
vcpu->arch.gmap = gmap_alloc(current->mm);
if (!vcpu->arch.gmap)
return -ENOMEM;
+ vcpu->arch.gmap->private = vcpu->kvm;
return 0;
}
@@ -373,8 +382,10 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH |
CPUSTAT_SM |
- CPUSTAT_STOPPED);
+ CPUSTAT_STOPPED |
+ CPUSTAT_GED);
vcpu->arch.sie_block->ecb = 6;
+ vcpu->arch.sie_block->ecb2 = 8;
vcpu->arch.sie_block->eca = 0xC1002001U;
vcpu->arch.sie_block->fac = (int) (long) facilities;
hrtimer_init(&vcpu->arch.ckc_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
@@ -397,7 +408,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
rc = -ENOMEM;
- vcpu = kzalloc(sizeof(struct kvm_vcpu), GFP_KERNEL);
+ vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
if (!vcpu)
goto out;
@@ -427,7 +438,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->arch.local_int.float_int = &kvm->arch.float_int;
spin_lock(&kvm->arch.float_int.lock);
kvm->arch.float_int.local_int[id] = &vcpu->arch.local_int;
- init_waitqueue_head(&vcpu->arch.local_int.wq);
+ vcpu->arch.local_int.wq = &vcpu->wq;
vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags;
spin_unlock(&kvm->arch.float_int.lock);
@@ -442,7 +453,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
out_free_sie_block:
free_page((unsigned long)(vcpu->arch.sie_block));
out_free_cpu:
- kfree(vcpu);
+ kmem_cache_free(kvm_vcpu_cache, vcpu);
out:
return ERR_PTR(rc);
}
@@ -454,6 +465,50 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
return 0;
}
+void s390_vcpu_block(struct kvm_vcpu *vcpu)
+{
+ atomic_set_mask(PROG_BLOCK_SIE, &vcpu->arch.sie_block->prog20);
+}
+
+void s390_vcpu_unblock(struct kvm_vcpu *vcpu)
+{
+ atomic_clear_mask(PROG_BLOCK_SIE, &vcpu->arch.sie_block->prog20);
+}
+
+/*
+ * Kick a guest cpu out of SIE and wait until SIE is not running.
+ * If the CPU is not running (e.g. waiting as idle) the function will
+ * return immediately. */
+void exit_sie(struct kvm_vcpu *vcpu)
+{
+ atomic_set_mask(CPUSTAT_STOP_INT, &vcpu->arch.sie_block->cpuflags);
+ while (vcpu->arch.sie_block->prog0c & PROG_IN_SIE)
+ cpu_relax();
+}
+
+/* Kick a guest cpu out of SIE and prevent SIE-reentry */
+void exit_sie_sync(struct kvm_vcpu *vcpu)
+{
+ s390_vcpu_block(vcpu);
+ exit_sie(vcpu);
+}
+
+static void kvm_gmap_notifier(struct gmap *gmap, unsigned long address)
+{
+ int i;
+ struct kvm *kvm = gmap->private;
+ struct kvm_vcpu *vcpu;
+
+ kvm_for_each_vcpu(i, vcpu, kvm) {
+ /* match against both prefix pages */
+ if (vcpu->arch.sie_block->prefix == (address & ~0x1000UL)) {
+ VCPU_EVENT(vcpu, 2, "gmap notifier for %lx", address);
+ kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
+ exit_sie_sync(vcpu);
+ }
+ }
+}
+
int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
{
/* kvm common code refers to this, but never calls it */
@@ -606,6 +661,27 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
return -EINVAL; /* not implemented yet */
}
+static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu)
+{
+ /*
+ * We use MMU_RELOAD just to re-arm the ipte notifier for the
+ * guest prefix page. gmap_ipte_notify will wait on the ptl lock.
+ * This ensures that the ipte instruction for this request has
+ * already finished. We might race against a second unmapper that
+ * wants to set the blocking bit. Lets just retry the request loop.
+ */
+ while (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu)) {
+ int rc;
+ rc = gmap_ipte_notify(vcpu->arch.gmap,
+ vcpu->arch.sie_block->prefix,
+ PAGE_SIZE * 2);
+ if (rc)
+ return rc;
+ s390_vcpu_unblock(vcpu);
+ }
+ return 0;
+}
+
static int __vcpu_run(struct kvm_vcpu *vcpu)
{
int rc;
@@ -621,6 +697,10 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
if (!kvm_is_ucontrol(vcpu->kvm))
kvm_s390_deliver_pending_interrupts(vcpu);
+ rc = kvm_s390_handle_requests(vcpu);
+ if (rc)
+ return rc;
+
vcpu->arch.sie_block->icptcode = 0;
preempt_disable();
kvm_guest_enter();
@@ -630,7 +710,9 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
trace_kvm_s390_sie_enter(vcpu,
atomic_read(&vcpu->arch.sie_block->cpuflags));
rc = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs);
- if (rc) {
+ if (rc > 0)
+ rc = 0;
+ if (rc < 0) {
if (kvm_is_ucontrol(vcpu->kvm)) {
rc = SIE_INTERCEPT_UCONTROL;
} else {
@@ -1046,7 +1128,7 @@ static int __init kvm_s390_init(void)
return -ENOMEM;
}
memcpy(facilities, S390_lowcore.stfle_fac_list, 16);
- facilities[0] &= 0xff00fff3f47c0000ULL;
+ facilities[0] &= 0xff82fff3f47c0000ULL;
facilities[1] &= 0x001c000000000000ULL;
return 0;
}
@@ -1059,3 +1141,12 @@ static void __exit kvm_s390_exit(void)
module_init(kvm_s390_init);
module_exit(kvm_s390_exit);
+
+/*
+ * Enable autoloading of the kvm module.
+ * Note that we add the module alias here instead of virt/kvm/kvm_main.c
+ * since x86 takes a different approach.
+ */
+#include <linux/miscdevice.h>
+MODULE_ALIAS_MISCDEV(KVM_MINOR);
+MODULE_ALIAS("devname:kvm");
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index efc14f68726..028ca9fd215 100644
--- a/arch/s390/kvm/kvm-s390.h
+++ b/arch/s390/kvm/kvm-s390.h
@@ -63,6 +63,7 @@ static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
{
vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
vcpu->arch.sie_block->ihcpu = 0xffff;
+ kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
}
static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
@@ -85,6 +86,12 @@ static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
*address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}
+static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
+{
+ *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
+ *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
+}
+
static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
{
u32 base2 = vcpu->arch.sie_block->ipb >> 28;
@@ -125,7 +132,8 @@ int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
-int kvm_s390_handle_priv_eb(struct kvm_vcpu *vcpu);
+int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
+int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
/* implemented in sigp.c */
int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
@@ -133,6 +141,10 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
/* implemented in kvm-s390.c */
int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
unsigned long addr);
+void s390_vcpu_block(struct kvm_vcpu *vcpu);
+void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
+void exit_sie(struct kvm_vcpu *vcpu);
+void exit_sie_sync(struct kvm_vcpu *vcpu);
/* implemented in diag.c */
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 6bbd7b5a0bb..0da3e6eb6be 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -1,7 +1,7 @@
/*
* handling privileged instructions
*
- * Copyright IBM Corp. 2008
+ * Copyright IBM Corp. 2008, 2013
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License (version 2 only)
@@ -20,6 +20,9 @@
#include <asm/debug.h>
#include <asm/ebcdic.h>
#include <asm/sysinfo.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/io.h>
#include <asm/ptrace.h>
#include <asm/compat.h>
#include "gaccess.h"
@@ -34,6 +37,9 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_spx++;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
operand2 = kvm_s390_get_base_disp_s(vcpu);
/* must be word boundary */
@@ -65,6 +71,9 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stpx++;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
operand2 = kvm_s390_get_base_disp_s(vcpu);
/* must be word boundary */
@@ -89,6 +98,9 @@ static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stap++;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
useraddr = kvm_s390_get_base_disp_s(vcpu);
if (useraddr & 1)
@@ -105,7 +117,12 @@ static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
static int handle_skey(struct kvm_vcpu *vcpu)
{
vcpu->stat.instruction_storage_key++;
- vcpu->arch.sie_block->gpsw.addr -= 4;
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ vcpu->arch.sie_block->gpsw.addr =
+ __rewind_psw(vcpu->arch.sie_block->gpsw, 4);
VCPU_EVENT(vcpu, 4, "%s", "retrying storage key operation");
return 0;
}
@@ -129,9 +146,10 @@ static int handle_tpi(struct kvm_vcpu *vcpu)
* Store the two-word I/O interruption code into the
* provided area.
*/
- put_guest(vcpu, inti->io.subchannel_id, (u16 __user *) addr);
- put_guest(vcpu, inti->io.subchannel_nr, (u16 __user *) (addr + 2));
- put_guest(vcpu, inti->io.io_int_parm, (u32 __user *) (addr + 4));
+ if (put_guest(vcpu, inti->io.subchannel_id, (u16 __user *)addr)
+ || put_guest(vcpu, inti->io.subchannel_nr, (u16 __user *)(addr + 2))
+ || put_guest(vcpu, inti->io.io_int_parm, (u32 __user *)(addr + 4)))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
} else {
/*
* Store the three-word I/O interruption code into
@@ -182,6 +200,9 @@ static int handle_io_inst(struct kvm_vcpu *vcpu)
{
VCPU_EVENT(vcpu, 4, "%s", "I/O instruction");
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
if (vcpu->kvm->arch.css_support) {
/*
* Most I/O instructions will be handled by userspace.
@@ -210,8 +231,12 @@ static int handle_stfl(struct kvm_vcpu *vcpu)
int rc;
vcpu->stat.instruction_stfl++;
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
/* only pass the facility bits, which we can handle */
- facility_list = S390_lowcore.stfl_fac_list & 0xff00fff3;
+ facility_list = S390_lowcore.stfl_fac_list & 0xff82fff3;
rc = copy_to_guest(vcpu, offsetof(struct _lowcore, stfl_fac_list),
&facility_list, sizeof(facility_list));
@@ -255,8 +280,8 @@ int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu)
u64 addr;
if (gpsw->mask & PSW_MASK_PSTATE)
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -278,6 +303,9 @@ static int handle_lpswe(struct kvm_vcpu *vcpu)
psw_t new_psw;
u64 addr;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
addr = kvm_s390_get_base_disp_s(vcpu);
if (addr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@@ -296,6 +324,9 @@ static int handle_stidp(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stidp++;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
operand2 = kvm_s390_get_base_disp_s(vcpu);
if (operand2 & 7)
@@ -351,16 +382,30 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stsi++;
VCPU_EVENT(vcpu, 4, "stsi: fc: %x sel1: %x sel2: %x", fc, sel1, sel2);
- operand2 = kvm_s390_get_base_disp_s(vcpu);
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ if (fc > 3) {
+ vcpu->arch.sie_block->gpsw.mask |= 3ul << 44; /* cc 3 */
+ return 0;
+ }
- if (operand2 & 0xfff && fc > 0)
+ if (vcpu->run->s.regs.gprs[0] & 0x0fffff00
+ || vcpu->run->s.regs.gprs[1] & 0xffff0000)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
- switch (fc) {
- case 0:
+ if (fc == 0) {
vcpu->run->s.regs.gprs[0] = 3 << 28;
- vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
+ vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44); /* cc 0 */
return 0;
+ }
+
+ operand2 = kvm_s390_get_base_disp_s(vcpu);
+
+ if (operand2 & 0xfff)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ switch (fc) {
case 1: /* same handling for 1 and 2 */
case 2:
mem = get_zeroed_page(GFP_KERNEL);
@@ -377,8 +422,6 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
goto out_no_data;
handle_stsi_3_2_2(vcpu, (void *) mem);
break;
- default:
- goto out_no_data;
}
if (copy_to_guest_absolute(vcpu, operand2, (void *) mem, PAGE_SIZE)) {
@@ -432,20 +475,14 @@ int kvm_s390_handle_b2(struct kvm_vcpu *vcpu)
intercept_handler_t handler;
/*
- * a lot of B2 instructions are priviledged. We first check for
- * the privileged ones, that we can handle in the kernel. If the
- * kernel can handle this instruction, we check for the problem
- * state bit and (a) handle the instruction or (b) send a code 2
- * program check.
- * Anything else goes to userspace.*/
+ * A lot of B2 instructions are priviledged. Here we check for
+ * the privileged ones, that we can handle in the kernel.
+ * Anything else goes to userspace.
+ */
handler = b2_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
- if (handler) {
- if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
- else
- return handler(vcpu);
- }
+ if (handler)
+ return handler(vcpu);
+
return -EOPNOTSUPP;
}
@@ -453,8 +490,7 @@ static int handle_epsw(struct kvm_vcpu *vcpu)
{
int reg1, reg2;
- reg1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 24;
- reg2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
+ kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);
/* This basically extracts the mask half of the psw. */
vcpu->run->s.regs.gprs[reg1] &= 0xffffffff00000000;
@@ -467,9 +503,88 @@ static int handle_epsw(struct kvm_vcpu *vcpu)
return 0;
}
+#define PFMF_RESERVED 0xfffc0101UL
+#define PFMF_SK 0x00020000UL
+#define PFMF_CF 0x00010000UL
+#define PFMF_UI 0x00008000UL
+#define PFMF_FSC 0x00007000UL
+#define PFMF_NQ 0x00000800UL
+#define PFMF_MR 0x00000400UL
+#define PFMF_MC 0x00000200UL
+#define PFMF_KEY 0x000000feUL
+
+static int handle_pfmf(struct kvm_vcpu *vcpu)
+{
+ int reg1, reg2;
+ unsigned long start, end;
+
+ vcpu->stat.instruction_pfmf++;
+
+ kvm_s390_get_regs_rre(vcpu, &reg1, &reg2);
+
+ if (!MACHINE_HAS_PFMF)
+ return kvm_s390_inject_program_int(vcpu, PGM_OPERATION);
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_RESERVED)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ /* Only provide non-quiescing support if the host supports it */
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_NQ &&
+ S390_lowcore.stfl_fac_list & 0x00020000)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ /* No support for conditional-SSKE */
+ if (vcpu->run->s.regs.gprs[reg1] & (PFMF_MR | PFMF_MC))
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ start = vcpu->run->s.regs.gprs[reg2] & PAGE_MASK;
+ switch (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC) {
+ case 0x00000000:
+ end = (start + (1UL << 12)) & ~((1UL << 12) - 1);
+ break;
+ case 0x00001000:
+ end = (start + (1UL << 20)) & ~((1UL << 20) - 1);
+ break;
+ /* We dont support EDAT2
+ case 0x00002000:
+ end = (start + (1UL << 31)) & ~((1UL << 31) - 1);
+ break;*/
+ default:
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+ }
+ while (start < end) {
+ unsigned long useraddr;
+
+ useraddr = gmap_translate(start, vcpu->arch.gmap);
+ if (IS_ERR((void *)useraddr))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_CF) {
+ if (clear_user((void __user *)useraddr, PAGE_SIZE))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ }
+
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_SK) {
+ if (set_guest_storage_key(current->mm, useraddr,
+ vcpu->run->s.regs.gprs[reg1] & PFMF_KEY,
+ vcpu->run->s.regs.gprs[reg1] & PFMF_NQ))
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ }
+
+ start += PAGE_SIZE;
+ }
+ if (vcpu->run->s.regs.gprs[reg1] & PFMF_FSC)
+ vcpu->run->s.regs.gprs[reg2] = end;
+ return 0;
+}
+
static const intercept_handler_t b9_handlers[256] = {
[0x8d] = handle_epsw,
[0x9c] = handle_io_inst,
+ [0xaf] = handle_pfmf,
};
int kvm_s390_handle_b9(struct kvm_vcpu *vcpu)
@@ -478,29 +593,96 @@ int kvm_s390_handle_b9(struct kvm_vcpu *vcpu)
/* This is handled just as for the B2 instructions. */
handler = b9_handlers[vcpu->arch.sie_block->ipa & 0x00ff];
- if (handler) {
- if ((handler != handle_epsw) &&
- (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE))
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
- else
- return handler(vcpu);
- }
+ if (handler)
+ return handler(vcpu);
+
return -EOPNOTSUPP;
}
+int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu)
+{
+ int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
+ int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
+ u64 useraddr;
+ u32 val = 0;
+ int reg, rc;
+
+ vcpu->stat.instruction_lctl++;
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ useraddr = kvm_s390_get_base_disp_rs(vcpu);
+
+ if (useraddr & 3)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ VCPU_EVENT(vcpu, 5, "lctl r1:%x, r3:%x, addr:%llx", reg1, reg3,
+ useraddr);
+ trace_kvm_s390_handle_lctl(vcpu, 0, reg1, reg3, useraddr);
+
+ reg = reg1;
+ do {
+ rc = get_guest(vcpu, val, (u32 __user *) useraddr);
+ if (rc)
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ vcpu->arch.sie_block->gcr[reg] &= 0xffffffff00000000ul;
+ vcpu->arch.sie_block->gcr[reg] |= val;
+ useraddr += 4;
+ if (reg == reg3)
+ break;
+ reg = (reg + 1) % 16;
+ } while (1);
+
+ return 0;
+}
+
+static int handle_lctlg(struct kvm_vcpu *vcpu)
+{
+ int reg1 = (vcpu->arch.sie_block->ipa & 0x00f0) >> 4;
+ int reg3 = vcpu->arch.sie_block->ipa & 0x000f;
+ u64 useraddr;
+ int reg, rc;
+
+ vcpu->stat.instruction_lctlg++;
+
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
+ useraddr = kvm_s390_get_base_disp_rsy(vcpu);
+
+ if (useraddr & 7)
+ return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
+
+ reg = reg1;
+
+ VCPU_EVENT(vcpu, 5, "lctlg r1:%x, r3:%x, addr:%llx", reg1, reg3,
+ useraddr);
+ trace_kvm_s390_handle_lctl(vcpu, 1, reg1, reg3, useraddr);
+
+ do {
+ rc = get_guest(vcpu, vcpu->arch.sie_block->gcr[reg],
+ (u64 __user *) useraddr);
+ if (rc)
+ return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ useraddr += 8;
+ if (reg == reg3)
+ break;
+ reg = (reg + 1) % 16;
+ } while (1);
+
+ return 0;
+}
+
static const intercept_handler_t eb_handlers[256] = {
+ [0x2f] = handle_lctlg,
[0x8a] = handle_io_inst,
};
-int kvm_s390_handle_priv_eb(struct kvm_vcpu *vcpu)
+int kvm_s390_handle_eb(struct kvm_vcpu *vcpu)
{
intercept_handler_t handler;
- /* All eb instructions that end up here are privileged. */
- if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
handler = eb_handlers[vcpu->arch.sie_block->ipb & 0xff];
if (handler)
return handler(vcpu);
@@ -515,6 +697,9 @@ static int handle_tprot(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_tprot++;
+ if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
+
kvm_s390_get_base_disp_sse(vcpu, &address1, &address2);
/* we only handle the Linux memory detection case:
@@ -560,8 +745,7 @@ static int handle_sckpf(struct kvm_vcpu *vcpu)
u32 value;
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
if (vcpu->run->s.regs.gprs[0] & 0x00000000ffff0000)
return kvm_s390_inject_program_int(vcpu,
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 1c48ab2845e..bec398c57ac 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -79,8 +79,8 @@ static int __sigp_emergency(struct kvm_vcpu *vcpu, u16 cpu_addr)
list_add_tail(&inti->list, &li->list);
atomic_set(&li->active, 1);
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&li->wq);
+ if (waitqueue_active(li->wq))
+ wake_up_interruptible(li->wq);
spin_unlock_bh(&li->lock);
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "sent sigp emerg to cpu %x", cpu_addr);
@@ -117,8 +117,8 @@ static int __sigp_external_call(struct kvm_vcpu *vcpu, u16 cpu_addr)
list_add_tail(&inti->list, &li->list);
atomic_set(&li->active, 1);
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&li->wq);
+ if (waitqueue_active(li->wq))
+ wake_up_interruptible(li->wq);
spin_unlock_bh(&li->lock);
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "sent sigp ext call to cpu %x", cpu_addr);
@@ -145,8 +145,8 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action)
atomic_set(&li->active, 1);
atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);
li->action_bits |= action;
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&li->wq);
+ if (waitqueue_active(li->wq))
+ wake_up_interruptible(li->wq);
out:
spin_unlock_bh(&li->lock);
@@ -250,8 +250,8 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
list_add_tail(&inti->list, &li->list);
atomic_set(&li->active, 1);
- if (waitqueue_active(&li->wq))
- wake_up_interruptible(&li->wq);
+ if (waitqueue_active(li->wq))
+ wake_up_interruptible(li->wq);
rc = SIGP_CC_ORDER_CODE_ACCEPTED;
VCPU_EVENT(vcpu, 4, "set prefix of cpu %02x to %x", cpu_addr, address);
@@ -333,8 +333,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
/* sigp in userspace can exit */
if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE)
- return kvm_s390_inject_program_int(vcpu,
- PGM_PRIVILEGED_OPERATION);
+ return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP);
order_code = kvm_s390_get_base_disp_rs(vcpu);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 03:32:01 +0000