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KVM: s390: provide general purpose guest registers via kvm_run

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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:
Christian Borntraeger 2012-01-11 11:20:32 +01:00 committed by Avi Kivity
parent 60b413c924
commit 5a32c1af56
7 changed files with 37 additions and 36 deletions
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2
arch/s390/include/asm/kvm.h
View File

@ -42,8 +42,10 @@ struct kvm_guest_debug_arch {
};
#define KVM_SYNC_PREFIX (1UL << 0)
#define KVM_SYNC_GPRS (1UL << 1)
/* definition of registers in kvm_run */
struct kvm_sync_regs {
__u64 prefix; /* prefix register */
__u64 gprs[16]; /* general purpose registers */
};
#endif

3
arch/s390/include/asm/kvm_host.h
View File

@ -228,7 +228,6 @@ struct kvm_s390_float_interrupt {
struct kvm_vcpu_arch {
struct kvm_s390_sie_block *sie_block;
unsigned long guest_gprs[16];
s390_fp_regs host_fpregs;
unsigned int host_acrs[NUM_ACRS];
s390_fp_regs guest_fpregs;
@ -254,5 +253,5 @@ struct kvm_arch{
struct gmap *gmap;
};
extern int sie64a(struct kvm_s390_sie_block *, unsigned long *);
extern int sie64a(struct kvm_s390_sie_block *, u64 *);
#endif

6
arch/s390/kvm/diag.c
View File

@ -20,8 +20,8 @@ static int diag_release_pages(struct kvm_vcpu *vcpu)
unsigned long start, end;
unsigned long prefix = vcpu->arch.sie_block->prefix;
start = vcpu->arch.guest_gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
end = vcpu->arch.guest_gprs[vcpu->arch.sie_block->ipa & 0xf] + 4096;
start = vcpu->run->s.regs.gprs[(vcpu->arch.sie_block->ipa & 0xf0) >> 4];
end = vcpu->run->s.regs.gprs[vcpu->arch.sie_block->ipa & 0xf] + 4096;
if (start & ~PAGE_MASK || end & ~PAGE_MASK || start > end
|| start < 2 * PAGE_SIZE)
@ -56,7 +56,7 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
static int __diag_ipl_functions(struct kvm_vcpu *vcpu)
{
unsigned int reg = vcpu->arch.sie_block->ipa & 0xf;
unsigned long subcode = vcpu->arch.guest_gprs[reg] & 0xffff;
unsigned long subcode = vcpu->run->s.regs.gprs[reg] & 0xffff;
VCPU_EVENT(vcpu, 5, "diag ipl functions, subcode %lx", subcode);
switch (subcode) {

4
arch/s390/kvm/intercept.c
View File

@ -36,7 +36,7 @@ static int handle_lctlg(struct kvm_vcpu *vcpu)
useraddr = disp2;
if (base2)
useraddr += vcpu->arch.guest_gprs[base2];
useraddr += vcpu->run->s.regs.gprs[base2];
if (useraddr & 7)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@ -75,7 +75,7 @@ static int handle_lctl(struct kvm_vcpu *vcpu)
useraddr = disp2;
if (base2)
useraddr += vcpu->arch.guest_gprs[base2];
useraddr += vcpu->run->s.regs.gprs[base2];
if (useraddr & 3)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);

14
arch/s390/kvm/kvm-s390.c
View File

@ -289,7 +289,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
}
vcpu->arch.gmap = vcpu->kvm->arch.gmap;
vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX;
vcpu->run->kvm_valid_regs = KVM_SYNC_PREFIX | KVM_SYNC_GPRS;
return 0;
}
@ -428,13 +428,13 @@ static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
memcpy(&vcpu->arch.guest_gprs, &regs->gprs, sizeof(regs->gprs));
memcpy(&vcpu->run->s.regs.gprs, &regs->gprs, sizeof(regs->gprs));
return 0;
}
int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
memcpy(&regs->gprs, &vcpu->arch.guest_gprs, sizeof(regs->gprs));
memcpy(&regs->gprs, &vcpu->run->s.regs.gprs, sizeof(regs->gprs));
return 0;
}
@ -511,7 +511,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
{
int rc;
memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16);
memcpy(&vcpu->arch.sie_block->gg14, &vcpu->run->s.regs.gprs[14], 16);
if (need_resched())
schedule();
@ -528,7 +528,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
local_irq_enable();
VCPU_EVENT(vcpu, 6, "entering sie flags %x",
atomic_read(&vcpu->arch.sie_block->cpuflags));
rc = sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs);
rc = sie64a(vcpu->arch.sie_block, vcpu->run->s.regs.gprs);
if (rc) {
if (kvm_is_ucontrol(vcpu->kvm)) {
rc = SIE_INTERCEPT_UCONTROL;
@ -544,7 +544,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
kvm_guest_exit();
local_irq_enable();
memcpy(&vcpu->arch.guest_gprs[14], &vcpu->arch.sie_block->gg14, 16);
memcpy(&vcpu->run->s.regs.gprs[14], &vcpu->arch.sie_block->gg14, 16);
return rc;
}
@ -673,7 +673,7 @@ int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
return -EFAULT;
if (__guestcopy(vcpu, addr + offsetof(struct save_area, gp_regs),
vcpu->arch.guest_gprs, 128, prefix))
vcpu->run->s.regs.gprs, 128, prefix))
return -EFAULT;
if (__guestcopy(vcpu, addr + offsetof(struct save_area, psw),

24
arch/s390/kvm/priv.c
View File

@ -33,7 +33,7 @@ static int handle_set_prefix(struct kvm_vcpu *vcpu)
operand2 = disp2;
if (base2)
operand2 += vcpu->arch.guest_gprs[base2];
operand2 += vcpu->run->s.regs.gprs[base2];
/* must be word boundary */
if (operand2 & 3) {
@ -73,7 +73,7 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stpx++;
operand2 = disp2;
if (base2)
operand2 += vcpu->arch.guest_gprs[base2];
operand2 += vcpu->run->s.regs.gprs[base2];
/* must be word boundary */
if (operand2 & 3) {
@ -105,7 +105,7 @@ static int handle_store_cpu_address(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stap++;
useraddr = disp2;
if (base2)
useraddr += vcpu->arch.guest_gprs[base2];
useraddr += vcpu->run->s.regs.gprs[base2];
if (useraddr & 1) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@ -180,7 +180,7 @@ static int handle_stidp(struct kvm_vcpu *vcpu)
vcpu->stat.instruction_stidp++;
operand2 = disp2;
if (base2)
operand2 += vcpu->arch.guest_gprs[base2];
operand2 += vcpu->run->s.regs.gprs[base2];
if (operand2 & 7) {
kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
@ -231,9 +231,9 @@ static void handle_stsi_3_2_2(struct kvm_vcpu *vcpu, struct sysinfo_3_2_2 *mem)
static int handle_stsi(struct kvm_vcpu *vcpu)
{
int fc = (vcpu->arch.guest_gprs[0] & 0xf0000000) >> 28;
int sel1 = vcpu->arch.guest_gprs[0] & 0xff;
int sel2 = vcpu->arch.guest_gprs[1] & 0xffff;
int fc = (vcpu->run->s.regs.gprs[0] & 0xf0000000) >> 28;
int sel1 = vcpu->run->s.regs.gprs[0] & 0xff;
int sel2 = vcpu->run->s.regs.gprs[1] & 0xffff;
int base2 = vcpu->arch.sie_block->ipb >> 28;
int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
u64 operand2;
@ -244,14 +244,14 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
operand2 = disp2;
if (base2)
operand2 += vcpu->arch.guest_gprs[base2];
operand2 += vcpu->run->s.regs.gprs[base2];
if (operand2 & 0xfff && fc > 0)
return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);
switch (fc) {
case 0:
vcpu->arch.guest_gprs[0] = 3 << 28;
vcpu->run->s.regs.gprs[0] = 3 << 28;
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
return 0;
case 1: /* same handling for 1 and 2 */
@ -280,7 +280,7 @@ static int handle_stsi(struct kvm_vcpu *vcpu)
}
free_page(mem);
vcpu->arch.sie_block->gpsw.mask &= ~(3ul << 44);
vcpu->arch.guest_gprs[0] = 0;
vcpu->run->s.regs.gprs[0] = 0;
return 0;
out_mem:
free_page(mem);
@ -332,8 +332,8 @@ static int handle_tprot(struct kvm_vcpu *vcpu)
int disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
int base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
int disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
u64 address1 = disp1 + base1 ? vcpu->arch.guest_gprs[base1] : 0;
u64 address2 = disp2 + base2 ? vcpu->arch.guest_gprs[base2] : 0;
u64 address1 = disp1 + base1 ? vcpu->run->s.regs.gprs[base1] : 0;
u64 address2 = disp2 + base2 ? vcpu->run->s.regs.gprs[base2] : 0;
struct vm_area_struct *vma;
unsigned long user_address;

20
arch/s390/kvm/sigp.c
View File

@ -48,7 +48,7 @@
static int __sigp_sense(struct kvm_vcpu *vcpu, u16 cpu_addr,
unsigned long *reg)
u64 *reg)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
int rc;
@ -220,7 +220,7 @@ static int __sigp_set_arch(struct kvm_vcpu *vcpu, u32 parameter)
}
static int __sigp_set_prefix(struct kvm_vcpu *vcpu, u16 cpu_addr, u32 address,
unsigned long *reg)
u64 *reg)
{
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
struct kvm_s390_local_interrupt *li = NULL;
@ -278,7 +278,7 @@ out_fi:
}
static int __sigp_sense_running(struct kvm_vcpu *vcpu, u16 cpu_addr,
unsigned long *reg)
u64 *reg)
{
int rc;
struct kvm_s390_float_interrupt *fi = &vcpu->kvm->arch.float_int;
@ -316,7 +316,7 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
int base2 = vcpu->arch.sie_block->ipb >> 28;
int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
u32 parameter;
u16 cpu_addr = vcpu->arch.guest_gprs[r3];
u16 cpu_addr = vcpu->run->s.regs.gprs[r3];
u8 order_code;
int rc;
@ -327,18 +327,18 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
order_code = disp2;
if (base2)
order_code += vcpu->arch.guest_gprs[base2];
order_code += vcpu->run->s.regs.gprs[base2];
if (r1 % 2)
parameter = vcpu->arch.guest_gprs[r1];
parameter = vcpu->run->s.regs.gprs[r1];
else
parameter = vcpu->arch.guest_gprs[r1 + 1];
parameter = vcpu->run->s.regs.gprs[r1 + 1];
switch (order_code) {
case SIGP_SENSE:
vcpu->stat.instruction_sigp_sense++;
rc = __sigp_sense(vcpu, cpu_addr,
&vcpu->arch.guest_gprs[r1]);
&vcpu->run->s.regs.gprs[r1]);
break;
case SIGP_EXTERNAL_CALL:
vcpu->stat.instruction_sigp_external_call++;
@ -363,12 +363,12 @@ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu)
case SIGP_SET_PREFIX:
vcpu->stat.instruction_sigp_prefix++;
rc = __sigp_set_prefix(vcpu, cpu_addr, parameter,
&vcpu->arch.guest_gprs[r1]);
&vcpu->run->s.regs.gprs[r1]);
break;
case SIGP_SENSE_RUNNING:
vcpu->stat.instruction_sigp_sense_running++;
rc = __sigp_sense_running(vcpu, cpu_addr,
&vcpu->arch.guest_gprs[r1]);
&vcpu->run->s.regs.gprs[r1]);
break;
case SIGP_RESTART:
vcpu->stat.instruction_sigp_restart++;