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-rw-r--r--arch/s390/kvm/Kconfig5
-rw-r--r--arch/s390/kvm/guestdbg.c4
-rw-r--r--arch/s390/kvm/interrupt.c2
-rw-r--r--arch/s390/kvm/kvm-s390.c22
-rw-r--r--arch/s390/kvm/priv.c8
-rw-r--r--arch/s390/kvm/vsie.c19
6 files changed, 35 insertions, 25 deletions
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index 45fdf2a9b2..72e9b7dcdf 100644
--- a/arch/s390/kvm/Kconfig
+++ b/arch/s390/kvm/Kconfig
@@ -20,19 +20,16 @@ config KVM
def_tristate y
prompt "Kernel-based Virtual Machine (KVM) support"
depends on HAVE_KVM
- select PREEMPT_NOTIFIERS
select HAVE_KVM_CPU_RELAX_INTERCEPT
select HAVE_KVM_VCPU_ASYNC_IOCTL
- select HAVE_KVM_EVENTFD
select KVM_ASYNC_PF
select KVM_ASYNC_PF_SYNC
+ select KVM_COMMON
select HAVE_KVM_IRQCHIP
- select HAVE_KVM_IRQFD
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_INVALID_WAKEUPS
select HAVE_KVM_NO_POLL
select KVM_VFIO
- select INTERVAL_TREE
select MMU_NOTIFIER
help
Support hosting paravirtualized guest machines using the SIE
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index 3765c4223b..80879fc73c 100644
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -213,8 +213,8 @@ int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
else if (dbg->arch.nr_hw_bp > MAX_BP_COUNT)
return -EINVAL;
- bp_data = memdup_user(dbg->arch.hw_bp,
- sizeof(*bp_data) * dbg->arch.nr_hw_bp);
+ bp_data = memdup_array_user(dbg->arch.hw_bp, dbg->arch.nr_hw_bp,
+ sizeof(*bp_data));
if (IS_ERR(bp_data))
return PTR_ERR(bp_data);
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index efaebba5ee..fc4007cc06 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -639,7 +639,7 @@ static int __write_machine_check(struct kvm_vcpu *vcpu,
rc |= put_guest_lc(vcpu, mci.val, (u64 __user *) __LC_MCCK_CODE);
/* Register-save areas */
- if (MACHINE_HAS_VX) {
+ if (cpu_has_vx()) {
convert_vx_to_fp(fprs, (__vector128 *) vcpu->run->s.regs.vrs);
rc |= write_guest_lc(vcpu, __LC_FPREGS_SAVE_AREA, fprs, 128);
} else {
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 16e3217480..ea63ac7698 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -563,7 +563,6 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_ENABLE_CAP:
case KVM_CAP_S390_CSS_SUPPORT:
case KVM_CAP_IOEVENTFD:
- case KVM_CAP_DEVICE_CTRL:
case KVM_CAP_S390_IRQCHIP:
case KVM_CAP_VM_ATTRIBUTES:
case KVM_CAP_MP_STATE:
@@ -618,7 +617,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
r = MACHINE_HAS_ESOP;
break;
case KVM_CAP_S390_VECTOR_REGISTERS:
- r = MACHINE_HAS_VX;
+ r = test_facility(129);
break;
case KVM_CAP_S390_RI:
r = test_facility(64);
@@ -767,7 +766,7 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm, struct kvm_enable_cap *cap)
mutex_lock(&kvm->lock);
if (kvm->created_vcpus) {
r = -EBUSY;
- } else if (MACHINE_HAS_VX) {
+ } else if (cpu_has_vx()) {
set_kvm_facility(kvm->arch.model.fac_mask, 129);
set_kvm_facility(kvm->arch.model.fac_list, 129);
if (test_facility(134)) {
@@ -3962,9 +3961,9 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu)
if (test_kvm_facility(vcpu->kvm, 156))
vcpu->run->kvm_valid_regs |= KVM_SYNC_ETOKEN;
/* fprs can be synchronized via vrs, even if the guest has no vx. With
- * MACHINE_HAS_VX, (load|store)_fpu_regs() will work with vrs format.
+ * cpu_has_vx(), (load|store)_fpu_regs() will work with vrs format.
*/
- if (MACHINE_HAS_VX)
+ if (cpu_has_vx())
vcpu->run->kvm_valid_regs |= KVM_SYNC_VRS;
else
vcpu->run->kvm_valid_regs |= KVM_SYNC_FPRS;
@@ -4317,7 +4316,7 @@ int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
vcpu_load(vcpu);
vcpu->run->s.regs.fpc = fpu->fpc;
- if (MACHINE_HAS_VX)
+ if (cpu_has_vx())
convert_fp_to_vx((__vector128 *) vcpu->run->s.regs.vrs,
(freg_t *) fpu->fprs);
else
@@ -4331,9 +4330,7 @@ int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{
vcpu_load(vcpu);
- /* make sure we have the latest values */
- save_fpu_regs();
- if (MACHINE_HAS_VX)
+ if (cpu_has_vx())
convert_vx_to_fp((freg_t *) fpu->fprs,
(__vector128 *) vcpu->run->s.regs.vrs);
else
@@ -4958,14 +4955,11 @@ static void sync_regs(struct kvm_vcpu *vcpu)
save_fpu_regs();
vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc;
vcpu->arch.host_fpregs.regs = current->thread.fpu.regs;
- if (MACHINE_HAS_VX)
+ if (cpu_has_vx())
current->thread.fpu.regs = vcpu->run->s.regs.vrs;
else
current->thread.fpu.regs = vcpu->run->s.regs.fprs;
current->thread.fpu.fpc = vcpu->run->s.regs.fpc;
- if (test_fp_ctl(current->thread.fpu.fpc))
- /* User space provided an invalid FPC, let's clear it */
- current->thread.fpu.fpc = 0;
/* Sync fmt2 only data */
if (likely(!kvm_s390_pv_cpu_is_protected(vcpu))) {
@@ -5140,7 +5134,7 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
gpa -= __LC_FPREGS_SAVE_AREA;
/* manually convert vector registers if necessary */
- if (MACHINE_HAS_VX) {
+ if (cpu_has_vx()) {
convert_vx_to_fp(fprs, (__vector128 *) vcpu->run->s.regs.vrs);
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
fprs, 128);
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 621a17fd1a..f875a404a0 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm/priv.c
@@ -676,8 +676,12 @@ static int handle_pqap(struct kvm_vcpu *vcpu)
if (vcpu->kvm->arch.crypto.pqap_hook) {
pqap_hook = *vcpu->kvm->arch.crypto.pqap_hook;
ret = pqap_hook(vcpu);
- if (!ret && vcpu->run->s.regs.gprs[1] & 0x00ff0000)
- kvm_s390_set_psw_cc(vcpu, 3);
+ if (!ret) {
+ if (vcpu->run->s.regs.gprs[1] & 0x00ff0000)
+ kvm_s390_set_psw_cc(vcpu, 3);
+ else
+ kvm_s390_set_psw_cc(vcpu, 0);
+ }
up_read(&vcpu->kvm->arch.crypto.pqap_hook_rwsem);
return ret;
}
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index db9a180de6..3af3bd20ac 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -19,6 +19,7 @@
#include <asm/nmi.h>
#include <asm/dis.h>
#include <asm/fpu/api.h>
+#include <asm/facility.h>
#include "kvm-s390.h"
#include "gaccess.h"
@@ -984,12 +985,26 @@ static void retry_vsie_icpt(struct vsie_page *vsie_page)
static int handle_stfle(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
{
struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s;
- __u32 fac = READ_ONCE(vsie_page->scb_o->fac) & 0x7ffffff8U;
+ __u32 fac = READ_ONCE(vsie_page->scb_o->fac);
+ /*
+ * Alternate-STFLE-Interpretive-Execution facilities are not supported
+ * -> format-0 flcb
+ */
if (fac && test_kvm_facility(vcpu->kvm, 7)) {
retry_vsie_icpt(vsie_page);
+ /*
+ * The facility list origin (FLO) is in bits 1 - 28 of the FLD
+ * so we need to mask here before reading.
+ */
+ fac = fac & 0x7ffffff8U;
+ /*
+ * format-0 -> size of nested guest's facility list == guest's size
+ * guest's size == host's size, since STFLE is interpretatively executed
+ * using a format-0 for the guest, too.
+ */
if (read_guest_real(vcpu, fac, &vsie_page->fac,
- sizeof(vsie_page->fac)))
+ stfle_size() * sizeof(u64)))
return set_validity_icpt(scb_s, 0x1090U);
scb_s->fac = (__u32)(__u64) &vsie_page->fac;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-28 15:44:14 +0000