From 8b96de0e0359b731b1e5ec897f217f8bf7e5903f Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 1 Jan 2014 16:53:27 +0100 Subject: [PATCH] KVM: s390: convert handle_store_cpu_address() Convert handle_store_cpu_address() to new guest access functions. Signed-off-by: Heiko Carstens Reviewed-by: Thomas Huth Signed-off-by: Christian Borntraeger --- arch/s390/kvm/priv.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c index 306caa27b962..36c34cf22889 100644 --- a/arch/s390/kvm/priv.c +++ b/arch/s390/kvm/priv.c @@ -134,23 +134,26 @@ static int handle_store_prefix(struct kvm_vcpu *vcpu) static int handle_store_cpu_address(struct kvm_vcpu *vcpu) { - u64 useraddr; + u16 vcpu_id = vcpu->vcpu_id; + u64 ga; + int rc; vcpu->stat.instruction_stap++; if (vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PSTATE) return kvm_s390_inject_program_int(vcpu, PGM_PRIVILEGED_OP); - useraddr = kvm_s390_get_base_disp_s(vcpu); + ga = kvm_s390_get_base_disp_s(vcpu); - if (useraddr & 1) + if (ga & 1) return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - if (put_guest(vcpu, vcpu->vcpu_id, (u16 __user *)useraddr)) - return kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING); + rc = write_guest(vcpu, ga, &vcpu_id, sizeof(vcpu_id)); + if (rc) + return kvm_s390_inject_prog_cond(vcpu, rc); - VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", useraddr); - trace_kvm_s390_handle_stap(vcpu, useraddr); + VCPU_EVENT(vcpu, 5, "storing cpu address to %llx", ga); + trace_kvm_s390_handle_stap(vcpu, ga); return 0; } -- GitLab