Commit f0ce3ff4 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "s390 and POWER bug fixes, plus enabling the KVM-VFIO interface on
  s390"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM doc: Fix KVM_SMI chapter number
  KVM: s390: fix memory overwrites when vx is disabled
  KVM: s390: Enable the KVM-VFIO device
  KVM: s390: fix guest fprs memory leak
  KVM: PPC: Fix ONE_REG AltiVec support
  KVM: PPC: Increase memslots to 512
  KVM: PPC: Book3S PR: Remove unused variable 'vcpu_book3s'
  KVM: PPC: Fix emulation of H_SET_DABR/X on POWER8
  KVM: PPC: Book3S HV: Handle unexpected traps in guest entry/exit code better
parents 119ae9b7 ed8e5a24
...@@ -3025,7 +3025,7 @@ len must be a multiple of sizeof(struct kvm_s390_irq). It must be > 0 ...@@ -3025,7 +3025,7 @@ len must be a multiple of sizeof(struct kvm_s390_irq). It must be > 0
and it must not exceed (max_vcpus + 32) * sizeof(struct kvm_s390_irq), and it must not exceed (max_vcpus + 32) * sizeof(struct kvm_s390_irq),
which is the maximum number of possibly pending cpu-local interrupts. which is the maximum number of possibly pending cpu-local interrupts.
4.90 KVM_SMI 4.96 KVM_SMI
Capability: KVM_CAP_X86_SMM Capability: KVM_CAP_X86_SMM
Architectures: x86 Architectures: x86
......
...@@ -38,8 +38,7 @@ ...@@ -38,8 +38,7 @@
#define KVM_MAX_VCPUS NR_CPUS #define KVM_MAX_VCPUS NR_CPUS
#define KVM_MAX_VCORES NR_CPUS #define KVM_MAX_VCORES NR_CPUS
#define KVM_USER_MEM_SLOTS 32 #define KVM_USER_MEM_SLOTS 512
#define KVM_MEM_SLOTS_NUM KVM_USER_MEM_SLOTS
#ifdef CONFIG_KVM_MMIO #ifdef CONFIG_KVM_MMIO
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
......
...@@ -377,15 +377,12 @@ static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, ...@@ -377,15 +377,12 @@ static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
static void kvmppc_mmu_book3s_64_slbmte(struct kvm_vcpu *vcpu, u64 rs, u64 rb) static void kvmppc_mmu_book3s_64_slbmte(struct kvm_vcpu *vcpu, u64 rs, u64 rb)
{ {
struct kvmppc_vcpu_book3s *vcpu_book3s;
u64 esid, esid_1t; u64 esid, esid_1t;
int slb_nr; int slb_nr;
struct kvmppc_slb *slbe; struct kvmppc_slb *slbe;
dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb); dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb);
vcpu_book3s = to_book3s(vcpu);
esid = GET_ESID(rb); esid = GET_ESID(rb);
esid_1t = GET_ESID_1T(rb); esid_1t = GET_ESID_1T(rb);
slb_nr = rb & 0xfff; slb_nr = rb & 0xfff;
......
...@@ -833,6 +833,24 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, ...@@ -833,6 +833,24 @@ static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->stat.sum_exits++; vcpu->stat.sum_exits++;
/*
* This can happen if an interrupt occurs in the last stages
* of guest entry or the first stages of guest exit (i.e. after
* setting paca->kvm_hstate.in_guest to KVM_GUEST_MODE_GUEST_HV
* and before setting it to KVM_GUEST_MODE_HOST_HV).
* That can happen due to a bug, or due to a machine check
* occurring at just the wrong time.
*/
if (vcpu->arch.shregs.msr & MSR_HV) {
printk(KERN_EMERG "KVM trap in HV mode!\n");
printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",
vcpu->arch.trap, kvmppc_get_pc(vcpu),
vcpu->arch.shregs.msr);
kvmppc_dump_regs(vcpu);
run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
run->hw.hardware_exit_reason = vcpu->arch.trap;
return RESUME_HOST;
}
run->exit_reason = KVM_EXIT_UNKNOWN; run->exit_reason = KVM_EXIT_UNKNOWN;
run->ready_for_interrupt_injection = 1; run->ready_for_interrupt_injection = 1;
switch (vcpu->arch.trap) { switch (vcpu->arch.trap) {
......
...@@ -2153,7 +2153,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) ...@@ -2153,7 +2153,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
/* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */ /* Emulate H_SET_DABR/X on P8 for the sake of compat mode guests */
2: rlwimi r5, r4, 5, DAWRX_DR | DAWRX_DW 2: rlwimi r5, r4, 5, DAWRX_DR | DAWRX_DW
rlwimi r5, r4, 1, DAWRX_WT rlwimi r5, r4, 2, DAWRX_WT
clrrdi r4, r4, 3 clrrdi r4, r4, 3
std r4, VCPU_DAWR(r3) std r4, VCPU_DAWR(r3)
std r5, VCPU_DAWRX(r3) std r5, VCPU_DAWRX(r3)
...@@ -2404,6 +2404,8 @@ machine_check_realmode: ...@@ -2404,6 +2404,8 @@ machine_check_realmode:
* guest as machine check causing guest to crash. * guest as machine check causing guest to crash.
*/ */
ld r11, VCPU_MSR(r9) ld r11, VCPU_MSR(r9)
rldicl. r0, r11, 64-MSR_HV_LG, 63 /* check if it happened in HV mode */
bne mc_cont /* if so, exit to host */
andi. r10, r11, MSR_RI /* check for unrecoverable exception */ andi. r10, r11, MSR_RI /* check for unrecoverable exception */
beq 1f /* Deliver a machine check to guest */ beq 1f /* Deliver a machine check to guest */
ld r10, VCPU_PC(r9) ld r10, VCPU_PC(r9)
......
...@@ -919,21 +919,17 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) ...@@ -919,21 +919,17 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
r = -ENXIO; r = -ENXIO;
break; break;
} }
vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval; val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
break; break;
case KVM_REG_PPC_VSCR: case KVM_REG_PPC_VSCR:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO; r = -ENXIO;
break; break;
} }
vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val); val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
break; break;
case KVM_REG_PPC_VRSAVE: case KVM_REG_PPC_VRSAVE:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { val = get_reg_val(reg->id, vcpu->arch.vrsave);
r = -ENXIO;
break;
}
vcpu->arch.vrsave = set_reg_val(reg->id, val);
break; break;
#endif /* CONFIG_ALTIVEC */ #endif /* CONFIG_ALTIVEC */
default: default:
...@@ -974,17 +970,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) ...@@ -974,17 +970,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
r = -ENXIO; r = -ENXIO;
break; break;
} }
val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0]; vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
break; break;
case KVM_REG_PPC_VSCR: case KVM_REG_PPC_VSCR:
if (!cpu_has_feature(CPU_FTR_ALTIVEC)) { if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO; r = -ENXIO;
break; break;
} }
val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]); vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
break; break;
case KVM_REG_PPC_VRSAVE: case KVM_REG_PPC_VRSAVE:
val = get_reg_val(reg->id, vcpu->arch.vrsave); if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
r = -ENXIO;
break;
}
vcpu->arch.vrsave = set_reg_val(reg->id, val);
break; break;
#endif /* CONFIG_ALTIVEC */ #endif /* CONFIG_ALTIVEC */
default: default:
......
...@@ -546,7 +546,6 @@ struct kvm_vcpu_arch { ...@@ -546,7 +546,6 @@ struct kvm_vcpu_arch {
struct kvm_s390_sie_block *sie_block; struct kvm_s390_sie_block *sie_block;
unsigned int host_acrs[NUM_ACRS]; unsigned int host_acrs[NUM_ACRS];
struct fpu host_fpregs; struct fpu host_fpregs;
struct fpu guest_fpregs;
struct kvm_s390_local_interrupt local_int; struct kvm_s390_local_interrupt local_int;
struct hrtimer ckc_timer; struct hrtimer ckc_timer;
struct kvm_s390_pgm_info pgm; struct kvm_s390_pgm_info pgm;
......
...@@ -29,6 +29,7 @@ config KVM ...@@ -29,6 +29,7 @@ config KVM
select HAVE_KVM_IRQFD select HAVE_KVM_IRQFD
select HAVE_KVM_IRQ_ROUTING select HAVE_KVM_IRQ_ROUTING
select SRCU select SRCU
select KVM_VFIO
---help--- ---help---
Support hosting paravirtualized guest machines using the SIE Support hosting paravirtualized guest machines using the SIE
virtualization capability on the mainframe. This should work virtualization capability on the mainframe. This should work
......
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
# as published by the Free Software Foundation. # as published by the Free Software Foundation.
KVM := ../../../virt/kvm KVM := ../../../virt/kvm
common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o $(KVM)/async_pf.o $(KVM)/irqchip.o common-objs = $(KVM)/kvm_main.o $(KVM)/eventfd.o $(KVM)/async_pf.o $(KVM)/irqchip.o $(KVM)/vfio.o
ccflags-y := -Ivirt/kvm -Iarch/s390/kvm ccflags-y := -Ivirt/kvm -Iarch/s390/kvm
......
...@@ -1423,44 +1423,18 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) ...@@ -1423,44 +1423,18 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
return 0; return 0;
} }
/*
* Backs up the current FP/VX register save area on a particular
* destination. Used to switch between different register save
* areas.
*/
static inline void save_fpu_to(struct fpu *dst)
{
dst->fpc = current->thread.fpu.fpc;
dst->regs = current->thread.fpu.regs;
}
/*
* Switches the FP/VX register save area from which to lazy
* restore register contents.
*/
static inline void load_fpu_from(struct fpu *from)
{
current->thread.fpu.fpc = from->fpc;
current->thread.fpu.regs = from->regs;
}
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{ {
/* Save host register state */ /* Save host register state */
save_fpu_regs(); save_fpu_regs();
save_fpu_to(&vcpu->arch.host_fpregs); vcpu->arch.host_fpregs.fpc = current->thread.fpu.fpc;
vcpu->arch.host_fpregs.regs = current->thread.fpu.regs;
if (test_kvm_facility(vcpu->kvm, 129)) { /* Depending on MACHINE_HAS_VX, data stored to vrs either
current->thread.fpu.fpc = vcpu->run->s.regs.fpc; * has vector register or floating point register format.
/*
* Use the register save area in the SIE-control block
* for register restore and save in kvm_arch_vcpu_put()
*/ */
current->thread.fpu.vxrs = current->thread.fpu.regs = vcpu->run->s.regs.vrs;
(__vector128 *)&vcpu->run->s.regs.vrs; current->thread.fpu.fpc = vcpu->run->s.regs.fpc;
} else
load_fpu_from(&vcpu->arch.guest_fpregs);
if (test_fp_ctl(current->thread.fpu.fpc)) if (test_fp_ctl(current->thread.fpu.fpc))
/* User space provided an invalid FPC, let's clear it */ /* User space provided an invalid FPC, let's clear it */
current->thread.fpu.fpc = 0; current->thread.fpu.fpc = 0;
...@@ -1476,19 +1450,13 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) ...@@ -1476,19 +1450,13 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
atomic_andnot(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags); atomic_andnot(CPUSTAT_RUNNING, &vcpu->arch.sie_block->cpuflags);
gmap_disable(vcpu->arch.gmap); gmap_disable(vcpu->arch.gmap);
/* Save guest register state */
save_fpu_regs(); save_fpu_regs();
if (test_kvm_facility(vcpu->kvm, 129))
/*
* kvm_arch_vcpu_load() set up the register save area to
* the &vcpu->run->s.regs.vrs and, thus, the vector registers
* are already saved. Only the floating-point control must be
* copied.
*/
vcpu->run->s.regs.fpc = current->thread.fpu.fpc; vcpu->run->s.regs.fpc = current->thread.fpu.fpc;
else
save_fpu_to(&vcpu->arch.guest_fpregs); /* Restore host register state */
load_fpu_from(&vcpu->arch.host_fpregs); current->thread.fpu.fpc = vcpu->arch.host_fpregs.fpc;
current->thread.fpu.regs = vcpu->arch.host_fpregs.regs;
save_access_regs(vcpu->run->s.regs.acrs); save_access_regs(vcpu->run->s.regs.acrs);
restore_access_regs(vcpu->arch.host_acrs); restore_access_regs(vcpu->arch.host_acrs);
...@@ -1506,8 +1474,9 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu) ...@@ -1506,8 +1474,9 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
memset(vcpu->arch.sie_block->gcr, 0, 16 * sizeof(__u64)); memset(vcpu->arch.sie_block->gcr, 0, 16 * sizeof(__u64));
vcpu->arch.sie_block->gcr[0] = 0xE0UL; vcpu->arch.sie_block->gcr[0] = 0xE0UL;
vcpu->arch.sie_block->gcr[14] = 0xC2000000UL; vcpu->arch.sie_block->gcr[14] = 0xC2000000UL;
vcpu->arch.guest_fpregs.fpc = 0; /* make sure the new fpc will be lazily loaded */
asm volatile("lfpc %0" : : "Q" (vcpu->arch.guest_fpregs.fpc)); save_fpu_regs();
current->thread.fpu.fpc = 0;
vcpu->arch.sie_block->gbea = 1; vcpu->arch.sie_block->gbea = 1;
vcpu->arch.sie_block->pp = 0; vcpu->arch.sie_block->pp = 0;
vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID; vcpu->arch.pfault_token = KVM_S390_PFAULT_TOKEN_INVALID;
...@@ -1648,17 +1617,6 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, ...@@ -1648,17 +1617,6 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
vcpu->arch.local_int.wq = &vcpu->wq; vcpu->arch.local_int.wq = &vcpu->wq;
vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags; vcpu->arch.local_int.cpuflags = &vcpu->arch.sie_block->cpuflags;
/*
* Allocate a save area for floating-point registers. If the vector
* extension is available, register contents are saved in the SIE
* control block. The allocated save area is still required in
* particular places, for example, in kvm_s390_vcpu_store_status().
*/
vcpu->arch.guest_fpregs.fprs = kzalloc(sizeof(freg_t) * __NUM_FPRS,
GFP_KERNEL);
if (!vcpu->arch.guest_fpregs.fprs)
goto out_free_sie_block;
rc = kvm_vcpu_init(vcpu, kvm, id); rc = kvm_vcpu_init(vcpu, kvm, id);
if (rc) if (rc)
goto out_free_sie_block; goto out_free_sie_block;
...@@ -1879,19 +1837,27 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, ...@@ -1879,19 +1837,27 @@ int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{ {
/* make sure the new values will be lazily loaded */
save_fpu_regs();
if (test_fp_ctl(fpu->fpc)) if (test_fp_ctl(fpu->fpc))
return -EINVAL; return -EINVAL;
memcpy(vcpu->arch.guest_fpregs.fprs, &fpu->fprs, sizeof(fpu->fprs)); current->thread.fpu.fpc = fpu->fpc;
vcpu->arch.guest_fpregs.fpc = fpu->fpc; if (MACHINE_HAS_VX)
save_fpu_regs(); convert_fp_to_vx(current->thread.fpu.vxrs, (freg_t *)fpu->fprs);
load_fpu_from(&vcpu->arch.guest_fpregs); else
memcpy(current->thread.fpu.fprs, &fpu->fprs, sizeof(fpu->fprs));
return 0; return 0;
} }
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
{ {
memcpy(&fpu->fprs, vcpu->arch.guest_fpregs.fprs, sizeof(fpu->fprs)); /* make sure we have the latest values */
fpu->fpc = vcpu->arch.guest_fpregs.fpc; save_fpu_regs();
if (MACHINE_HAS_VX)
convert_vx_to_fp((freg_t *)fpu->fprs, current->thread.fpu.vxrs);
else
memcpy(fpu->fprs, current->thread.fpu.fprs, sizeof(fpu->fprs));
fpu->fpc = current->thread.fpu.fpc;
return 0; return 0;
} }
...@@ -2396,6 +2362,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) ...@@ -2396,6 +2362,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
{ {
unsigned char archmode = 1; unsigned char archmode = 1;
freg_t fprs[NUM_FPRS];
unsigned int px; unsigned int px;
u64 clkcomp; u64 clkcomp;
int rc; int rc;
...@@ -2411,8 +2378,16 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) ...@@ -2411,8 +2378,16 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
gpa = px; gpa = px;
} else } else
gpa -= __LC_FPREGS_SAVE_AREA; gpa -= __LC_FPREGS_SAVE_AREA;
/* manually convert vector registers if necessary */
if (MACHINE_HAS_VX) {
convert_vx_to_fp(fprs, current->thread.fpu.vxrs);
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA, rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
vcpu->arch.guest_fpregs.fprs, 128); fprs, 128);
} else {
rc = write_guest_abs(vcpu, gpa + __LC_FPREGS_SAVE_AREA,
vcpu->run->s.regs.vrs, 128);
}
rc |= write_guest_abs(vcpu, gpa + __LC_GPREGS_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_GPREGS_SAVE_AREA,
vcpu->run->s.regs.gprs, 128); vcpu->run->s.regs.gprs, 128);
rc |= write_guest_abs(vcpu, gpa + __LC_PSW_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_PSW_SAVE_AREA,
...@@ -2420,7 +2395,7 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa) ...@@ -2420,7 +2395,7 @@ int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long gpa)
rc |= write_guest_abs(vcpu, gpa + __LC_PREFIX_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_PREFIX_SAVE_AREA,
&px, 4); &px, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_FP_CREG_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_FP_CREG_SAVE_AREA,
&vcpu->arch.guest_fpregs.fpc, 4); &vcpu->run->s.regs.fpc, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_TOD_PROGREG_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_TOD_PROGREG_SAVE_AREA,
&vcpu->arch.sie_block->todpr, 4); &vcpu->arch.sie_block->todpr, 4);
rc |= write_guest_abs(vcpu, gpa + __LC_CPU_TIMER_SAVE_AREA, rc |= write_guest_abs(vcpu, gpa + __LC_CPU_TIMER_SAVE_AREA,
...@@ -2443,19 +2418,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr) ...@@ -2443,19 +2418,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
* it into the save area * it into the save area
*/ */
save_fpu_regs(); save_fpu_regs();
if (test_kvm_facility(vcpu->kvm, 129)) { vcpu->run->s.regs.fpc = current->thread.fpu.fpc;
/*
* If the vector extension is available, the vector registers
* which overlaps with floating-point registers are saved in
* the SIE-control block. Hence, extract the floating-point
* registers and the FPC value and store them in the
* guest_fpregs structure.
*/
vcpu->arch.guest_fpregs.fpc = current->thread.fpu.fpc;
convert_vx_to_fp(vcpu->arch.guest_fpregs.fprs,
current->thread.fpu.vxrs);
} else
save_fpu_to(&vcpu->arch.guest_fpregs);
save_access_regs(vcpu->run->s.regs.acrs); save_access_regs(vcpu->run->s.regs.acrs);
return kvm_s390_store_status_unloaded(vcpu, addr); return kvm_s390_store_status_unloaded(vcpu, addr);
......
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