diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/s390/kvm/diag.c')
-rw-r--r-- | ANDROID_3.4.5/arch/s390/kvm/diag.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/ANDROID_3.4.5/arch/s390/kvm/diag.c b/ANDROID_3.4.5/arch/s390/kvm/diag.c deleted file mode 100644 index a353f0ea..00000000 --- a/ANDROID_3.4.5/arch/s390/kvm/diag.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * diag.c - handling diagnose instructions - * - * Copyright IBM Corp. 2008,2011 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License (version 2 only) - * as published by the Free Software Foundation. - * - * Author(s): Carsten Otte <cotte@de.ibm.com> - * Christian Borntraeger <borntraeger@de.ibm.com> - */ - -#include <linux/kvm.h> -#include <linux/kvm_host.h> -#include "kvm-s390.h" - -static int diag_release_pages(struct kvm_vcpu *vcpu) -{ - unsigned long start, end; - unsigned long prefix = vcpu->arch.sie_block->prefix; - - 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) - return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION); - - VCPU_EVENT(vcpu, 5, "diag release pages %lX %lX", start, end); - vcpu->stat.diagnose_10++; - - /* we checked for start > end above */ - if (end < prefix || start >= prefix + 2 * PAGE_SIZE) { - gmap_discard(start, end, vcpu->arch.gmap); - } else { - if (start < prefix) - gmap_discard(start, prefix, vcpu->arch.gmap); - if (end >= prefix) - gmap_discard(prefix + 2 * PAGE_SIZE, - end, vcpu->arch.gmap); - } - return 0; -} - -static int __diag_time_slice_end(struct kvm_vcpu *vcpu) -{ - VCPU_EVENT(vcpu, 5, "%s", "diag time slice end"); - vcpu->stat.diagnose_44++; - vcpu_put(vcpu); - yield(); - vcpu_load(vcpu); - return 0; -} - -static int __diag_ipl_functions(struct kvm_vcpu *vcpu) -{ - unsigned int reg = vcpu->arch.sie_block->ipa & 0xf; - unsigned long subcode = vcpu->run->s.regs.gprs[reg] & 0xffff; - - VCPU_EVENT(vcpu, 5, "diag ipl functions, subcode %lx", subcode); - switch (subcode) { - case 3: - vcpu->run->s390_reset_flags = KVM_S390_RESET_CLEAR; - break; - case 4: - vcpu->run->s390_reset_flags = 0; - break; - default: - return -EOPNOTSUPP; - } - - atomic_set_mask(CPUSTAT_STOPPED, &vcpu->arch.sie_block->cpuflags); - vcpu->run->s390_reset_flags |= KVM_S390_RESET_SUBSYSTEM; - vcpu->run->s390_reset_flags |= KVM_S390_RESET_IPL; - vcpu->run->s390_reset_flags |= KVM_S390_RESET_CPU_INIT; - vcpu->run->exit_reason = KVM_EXIT_S390_RESET; - VCPU_EVENT(vcpu, 3, "requesting userspace resets %llx", - vcpu->run->s390_reset_flags); - return -EREMOTE; -} - -int kvm_s390_handle_diag(struct kvm_vcpu *vcpu) -{ - int code = (vcpu->arch.sie_block->ipb & 0xfff0000) >> 16; - - switch (code) { - case 0x10: - return diag_release_pages(vcpu); - case 0x44: - return __diag_time_slice_end(vcpu); - case 0x308: - return __diag_ipl_functions(vcpu); - default: - return -EOPNOTSUPP; - } -} |