From: David Hildenbrand Date: Mon, 3 Mar 2014 09:55:13 +0000 (+0100) Subject: KVM: s390: deliver program irq parameters and use correct ilc X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8712836b30cef5d49bc3bb8bc3da88a40e11e574;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git KVM: s390: deliver program irq parameters and use correct ilc When a program interrupt was to be delivered until now, no program interrupt parameters were stored in the low-core of the target vcpu. This patch enables the delivery of those program interrupt parameters, takes care of concurrent PER events which can be injected in addition to any program interrupt and uses the correct instruction length code (depending on the interception code) for the injection of program interrupts. Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger --- diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h index b8c808192893..5e5a14db8c21 100644 --- a/arch/s390/include/asm/kvm_host.h +++ b/arch/s390/include/asm/kvm_host.h @@ -102,6 +102,12 @@ struct kvm_s390_sie_block { #define ICTL_RRBE 0x00001000 __u32 ictl; /* 0x0048 */ __u32 eca; /* 0x004c */ +#define ICPT_INST 0x04 +#define ICPT_PROGI 0x08 +#define ICPT_INSTPROGI 0x0C +#define ICPT_OPEREXC 0x2C +#define ICPT_PARTEXEC 0x38 +#define ICPT_IOINST 0x40 __u8 icptcode; /* 0x0050 */ __u8 reserved51; /* 0x0051 */ __u16 ihcpu; /* 0x0052 */ diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 1c74bb92329b..c49b4d4d310a 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -174,6 +174,106 @@ static void __set_intercept_indicator(struct kvm_vcpu *vcpu, } } +static int __deliver_prog_irq(struct kvm_vcpu *vcpu, + struct kvm_s390_pgm_info *pgm_info) +{ + const unsigned short table[] = { 2, 4, 4, 6 }; + int rc = 0; + + switch (pgm_info->code & ~PGM_PER) { + case PGM_AFX_TRANSLATION: + case PGM_ASX_TRANSLATION: + case PGM_EX_TRANSLATION: + case PGM_LFX_TRANSLATION: + case PGM_LSTE_SEQUENCE: + case PGM_LSX_TRANSLATION: + case PGM_LX_TRANSLATION: + case PGM_PRIMARY_AUTHORITY: + case PGM_SECONDARY_AUTHORITY: + case PGM_SPACE_SWITCH: + rc = put_guest_lc(vcpu, pgm_info->trans_exc_code, + (u64 *)__LC_TRANS_EXC_CODE); + break; + case PGM_ALEN_TRANSLATION: + case PGM_ALE_SEQUENCE: + case PGM_ASTE_INSTANCE: + case PGM_ASTE_SEQUENCE: + case PGM_ASTE_VALIDITY: + case PGM_EXTENDED_AUTHORITY: + rc = put_guest_lc(vcpu, pgm_info->exc_access_id, + (u8 *)__LC_EXC_ACCESS_ID); + break; + case PGM_ASCE_TYPE: + case PGM_PAGE_TRANSLATION: + case PGM_REGION_FIRST_TRANS: + case PGM_REGION_SECOND_TRANS: + case PGM_REGION_THIRD_TRANS: + case PGM_SEGMENT_TRANSLATION: + rc = put_guest_lc(vcpu, pgm_info->trans_exc_code, + (u64 *)__LC_TRANS_EXC_CODE); + rc |= put_guest_lc(vcpu, pgm_info->exc_access_id, + (u8 *)__LC_EXC_ACCESS_ID); + rc |= put_guest_lc(vcpu, pgm_info->op_access_id, + (u8 *)__LC_OP_ACCESS_ID); + break; + case PGM_MONITOR: + rc = put_guest_lc(vcpu, pgm_info->mon_class_nr, + (u64 *)__LC_MON_CLASS_NR); + rc |= put_guest_lc(vcpu, pgm_info->mon_code, + (u64 *)__LC_MON_CODE); + break; + case PGM_DATA: + rc = put_guest_lc(vcpu, pgm_info->data_exc_code, + (u32 *)__LC_DATA_EXC_CODE); + break; + case PGM_PROTECTION: + rc = put_guest_lc(vcpu, pgm_info->trans_exc_code, + (u64 *)__LC_TRANS_EXC_CODE); + rc |= put_guest_lc(vcpu, pgm_info->exc_access_id, + (u8 *)__LC_EXC_ACCESS_ID); + break; + } + + if (pgm_info->code & PGM_PER) { + rc |= put_guest_lc(vcpu, pgm_info->per_code, + (u8 *) __LC_PER_CODE); + rc |= put_guest_lc(vcpu, pgm_info->per_atmid, + (u8 *)__LC_PER_ATMID); + rc |= put_guest_lc(vcpu, pgm_info->per_address, + (u64 *) __LC_PER_ADDRESS); + rc |= put_guest_lc(vcpu, pgm_info->per_access_id, + (u8 *) __LC_PER_ACCESS_ID); + } + + switch (vcpu->arch.sie_block->icptcode) { + case ICPT_INST: + case ICPT_INSTPROGI: + case ICPT_OPEREXC: + case ICPT_PARTEXEC: + case ICPT_IOINST: + /* last instruction only stored for these icptcodes */ + rc |= put_guest_lc(vcpu, table[vcpu->arch.sie_block->ipa >> 14], + (u16 *) __LC_PGM_ILC); + break; + case ICPT_PROGI: + rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->pgmilc, + (u16 *) __LC_PGM_ILC); + break; + default: + rc |= put_guest_lc(vcpu, 0, + (u16 *) __LC_PGM_ILC); + } + + rc |= put_guest_lc(vcpu, pgm_info->code, + (u16 *)__LC_PGM_INT_CODE); + rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW, + &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); + rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW, + &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); + + return rc; +} + static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, struct kvm_s390_interrupt_info *inti) { @@ -305,15 +405,7 @@ static void __do_deliver_interrupt(struct kvm_vcpu *vcpu, vcpu->stat.deliver_program_int++; trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type, inti->pgm.code, 0); - rc = put_guest_lc(vcpu, inti->pgm.code, - (u16 __user *)__LC_PGM_INT_CODE); - rc |= put_guest_lc(vcpu, table[vcpu->arch.sie_block->ipa >> 14], - (u16 __user *)__LC_PGM_ILC); - rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW, - &vcpu->arch.sie_block->gpsw, sizeof(psw_t)); - rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW, - &vcpu->arch.sie_block->gpsw, - sizeof(psw_t)); + rc = __deliver_prog_irq(vcpu, &inti->pgm); break; case KVM_S390_MCHK: