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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
KVM: s390: provide general purpose guest registers via kvm_run
This patch adds the general purpose registers to the kvm_run structure. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
parent
60b413c924
commit
5a32c1af56
7 changed files with 37 additions and 36 deletions
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@ -42,8 +42,10 @@ struct kvm_guest_debug_arch {
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};
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#define KVM_SYNC_PREFIX (1UL << 0)
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#define KVM_SYNC_GPRS (1UL << 1)
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/* definition of registers in kvm_run */
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struct kvm_sync_regs {
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__u64 prefix; /* prefix register */
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__u64 gprs[16]; /* general purpose registers */
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};
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#endif
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@ -228,7 +228,6 @@ struct kvm_s390_float_interrupt {
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struct kvm_vcpu_arch {
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struct kvm_s390_sie_block *sie_block;
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unsigned long guest_gprs[16];
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s390_fp_regs host_fpregs;
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unsigned int host_acrs[NUM_ACRS];
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s390_fp_regs guest_fpregs;
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@ -254,5 +253,5 @@ struct kvm_arch{
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struct gmap *gmap;
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};
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extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
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extern int sie64a(struct kvm_s390_sie_block *, u64 *);
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#endif
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@ -20,8 +20,8 @@ static int diag_release_pages(struct kvm_vcpu *vcpu)
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unsigned long start, end;
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unsigned long prefix = vcpu->arch.sie_block->prefix;
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start = vcpu->arch.guest_gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
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end = vcpu->arch.guest_gprs[vcpu->arch.sie_block->ipa & 0xf] + 4096;
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start = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
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end = vcpu->run->s.regs.gprs[vcpu->arch.sie_block->ipa & 0xf] + 4096;
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if (start & ~PAGE_MASK || end & ~PAGE_MASK || start > end
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|| start < 2 * PAGE_SIZE)
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@ -56,7 +56,7 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
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static int __diag_ipl_functions(struct kvm_vcpu *vcpu)
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{
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unsigned int reg = vcpu->arch.sie_block->ipa & 0xf;
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unsigned long subcode = vcpu->arch.guest_gprs[reg] & 0xffff;
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unsigned long subcode = vcpu->run->s.regs.gprs[reg] & 0xffff;
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VCPU_EVENT(vcpu, 5, "diag ipl functions, subcode %lx", subcode);
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switch (subcode) {
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@ -36,7 +36,7 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
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useraddr = disp2;
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if (base2)
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useraddr += vcpu->arch.guest_gprs[base2];
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useraddr += vcpu->run->s.regs.gprs[base2];
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if (useraddr & 7)
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return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
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@ -75,7 +75,7 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
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useraddr = disp2;
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if (base2)
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useraddr += vcpu->arch.guest_gprs[base2];
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useraddr += vcpu->run->s.regs.gprs[base2];
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if (useraddr & 3)
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return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
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@ -289,7 +289,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
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}
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vcpu->arch.gmap = vcpu->kvm->arch.gmap;
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vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX;
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vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX | KVM_SYNC_GPRS;
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return 0;
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}
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@ -428,13 +428,13 @@ static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
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int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
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{
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memcpy(&vcpu->arch.guest_gprs, ®s->gprs, sizeof(regs->gprs));
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memcpy(&vcpu->run->s.regs.gprs, ®s->gprs, sizeof(regs->gprs));
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return 0;
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}
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int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
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{
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memcpy(®s->gprs, &vcpu->arch.guest_gprs, sizeof(regs->gprs));
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memcpy(®s->gprs, &vcpu->run->s.regs.gprs, sizeof(regs->gprs));
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return 0;
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}
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@ -511,7 +511,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
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{
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int rc;
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memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16);
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memcpy(&vcpu->arch.sie_block->gg14, &vcpu->run->s.regs.gprs[14], 16);
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if (need_resched())
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schedule();
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@ -528,7 +528,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
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local_irq_enable();
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VCPU_EVENT(vcpu, 6, "entering sie flags %x",
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atomic_read(&vcpu->arch.sie_block->cpuflags));
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rc = sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs);
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rc = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs);
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if (rc) {
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if (kvm_is_ucontrol(vcpu->kvm)) {
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rc = SIE_INTERCEPT_UCONTROL;
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@ -544,7 +544,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
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kvm_guest_exit();
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local_irq_enable();
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memcpy(&vcpu->arch.guest_gprs[14], &vcpu->arch.sie_block->gg14, 16);
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memcpy(&vcpu->run->s.regs.gprs[14], &vcpu->arch.sie_block->gg14, 16);
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return rc;
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}
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@ -673,7 +673,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
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return -EFAULT;
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if (__guestcopy(vcpu, addr + offsetof(struct save_area, gp_regs),
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vcpu->arch.guest_gprs, 128, prefix))
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vcpu->run->s.regs.gprs, 128, prefix))
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return -EFAULT;
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if (__guestcopy(vcpu, addr + offsetof(struct save_area, psw),
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@ -33,7 +33,7 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu)
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operand2 = disp2;
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if (base2)
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operand2 += vcpu->arch.guest_gprs[base2];
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operand2 += vcpu->run->s.regs.gprs[base2];
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/* must be word boundary */
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if (operand2 & 3) {
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@ -73,7 +73,7 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
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vcpu->stat.instruction_stpx++;
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operand2 = disp2;
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if (base2)
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operand2 += vcpu->arch.guest_gprs[base2];
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operand2 += vcpu->run->s.regs.gprs[base2];
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/* must be word boundary */
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if (operand2 & 3) {
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@ -105,7 +105,7 @@ static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
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vcpu->stat.instruction_stap++;
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useraddr = disp2;
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if (base2)
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useraddr += vcpu->arch.guest_gprs[base2];
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useraddr += vcpu->run->s.regs.gprs[base2];
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if (useraddr & 1) {
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kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
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@ -180,7 +180,7 @@ static int handle_stidp(struct kvm_vcpu *vcpu)
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vcpu->stat.instruction_stidp++;
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operand2 = disp2;
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if (base2)
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operand2 += vcpu->arch.guest_gprs[base2];
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operand2 += vcpu->run->s.regs.gprs[base2];
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if (operand2 & 7) {
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kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
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@ -231,9 +231,9 @@ static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
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static int handle_stsi(struct kvm_vcpu *vcpu)
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{
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int fc = (vcpu->arch.guest_gprs[0] & 0xf0000000) >> 28;
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int sel1 = vcpu->arch.guest_gprs[0] & 0xff;
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int sel2 = vcpu->arch.guest_gprs[1] & 0xffff;
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int fc = (vcpu->run->s.regs.gprs[0] & 0xf0000000) >> 28;
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int sel1 = vcpu->run->s.regs.gprs[0] & 0xff;
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int sel2 = vcpu->run->s.regs.gprs[1] & 0xffff;
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int base2 = vcpu->arch.sie_block->ipb >> 28;
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int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
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u64 operand2;
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@ -244,14 +244,14 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
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operand2 = disp2;
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if (base2)
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operand2 += vcpu->arch.guest_gprs[base2];
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operand2 += vcpu->run->s.regs.gprs[base2];
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if (operand2 & 0xfff && fc > 0)
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return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
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switch (fc) {
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case 0:
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vcpu->arch.guest_gprs[0] = 3 << 28;
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vcpu->run->s.regs.gprs[0] = 3 << 28;
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vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
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return 0;
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case 1: /* same handling for 1 and 2 */
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@ -280,7 +280,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
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}
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free_page(mem);
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vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
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vcpu->arch.guest_gprs[0] = 0;
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vcpu->run->s.regs.gprs[0] = 0;
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return 0;
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out_mem:
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free_page(mem);
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@ -332,8 +332,8 @@ static int handle_tprot(struct kvm_vcpu *vcpu)
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int disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
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int base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
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int disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
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u64 address1 = disp1 + base1 ? vcpu->arch.guest_gprs[base1] : 0;
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u64 address2 = disp2 + base2 ? vcpu->arch.guest_gprs[base2] : 0;
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u64 address1 = disp1 + base1 ? vcpu->run->s.regs.gprs[base1] : 0;
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u64 address2 = disp2 + base2 ? vcpu->run->s.regs.gprs[base2] : 0;
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struct vm_area_struct *vma;
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unsigned long user_address;
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@ -48,7 +48,7 @@
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static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
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unsigned long *reg)
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u64 *reg)
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{
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struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
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int rc;
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@ -220,7 +220,7 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
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}
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static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
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unsigned long *reg)
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u64 *reg)
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{
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struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
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struct kvm_s390_local_interrupt *li = NULL;
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@ -278,7 +278,7 @@ static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
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}
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static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
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unsigned long *reg)
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u64 *reg)
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{
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int rc;
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struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
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int base2 = vcpu->arch.sie_block->ipb >> 28;
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int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
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u32 parameter;
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u16 cpu_addr = vcpu->arch.guest_gprs[r3];
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u16 cpu_addr = vcpu->run->s.regs.gprs[r3];
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u8 order_code;
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int rc;
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order_code = disp2;
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if (base2)
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order_code += vcpu->arch.guest_gprs[base2];
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order_code += vcpu->run->s.regs.gprs[base2];
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if (r1 % 2)
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parameter = vcpu->arch.guest_gprs[r1];
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parameter = vcpu->run->s.regs.gprs[r1];
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else
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parameter = vcpu->arch.guest_gprs[r1 + 1];
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parameter = vcpu->run->s.regs.gprs[r1 + 1];
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switch (order_code) {
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case SIGP_SENSE:
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vcpu->stat.instruction_sigp_sense++;
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rc = __sigp_sense(vcpu, cpu_addr,
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&vcpu->arch.guest_gprs[r1]);
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&vcpu->run->s.regs.gprs[r1]);
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break;
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case SIGP_EXTERNAL_CALL:
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vcpu->stat.instruction_sigp_external_call++;
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case SIGP_SET_PREFIX:
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vcpu->stat.instruction_sigp_prefix++;
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rc = __sigp_set_prefix(vcpu, cpu_addr, parameter,
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&vcpu->arch.guest_gprs[r1]);
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&vcpu->run->s.regs.gprs[r1]);
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break;
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case SIGP_SENSE_RUNNING:
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vcpu->stat.instruction_sigp_sense_running++;
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rc = __sigp_sense_running(vcpu, cpu_addr,
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&vcpu->arch.guest_gprs[r1]);
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&vcpu->run->s.regs.gprs[r1]);
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break;
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case SIGP_RESTART:
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vcpu->stat.instruction_sigp_restart++;
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