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Commit ccc59f47 authored by Christian Borntraeger's avatar Christian Borntraeger
Browse files

Merge tag 'kvm-s390-master-4.13-2' into kvms390/next 

Additional fixes on top of these two
 - missing inline assembly constraint
 - wrong exception handling

are necessary
parents 962734fc 857b8de9

arch/s390/kvm/kvm-s390.c

+6 −2
Original line number Diff line number Diff line
@@ -1324,7 +1324,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
{

	uint8_t *keys;

	uint64_t hva;

	int i, r = 0;

	int srcu_idx, i, r = 0;



	if (args->flags != 0)

		return -EINVAL;
@@ -1342,6 +1342,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
		return -ENOMEM;



	down_read(&current->mm->mmap_sem);

	srcu_idx = srcu_read_lock(&kvm->srcu);

	for (i = 0; i < args->count; i++) {

		hva = gfn_to_hva(kvm, args->start_gfn + i);

		if (kvm_is_error_hva(hva)) {
@@ -1353,6 +1354,7 @@ static long kvm_s390_get_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
		if (r)

			break;

	}

	srcu_read_unlock(&kvm->srcu, srcu_idx);

	up_read(&current->mm->mmap_sem);



	if (!r) {
@@ -1370,7 +1372,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
{

	uint8_t *keys;

	uint64_t hva;

	int i, r = 0;

	int srcu_idx, i, r = 0;



	if (args->flags != 0)

		return -EINVAL;
@@ -1396,6 +1398,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
		goto out;



	down_read(&current->mm->mmap_sem);

	srcu_idx = srcu_read_lock(&kvm->srcu);

	for (i = 0; i < args->count; i++) {

		hva = gfn_to_hva(kvm, args->start_gfn + i);

		if (kvm_is_error_hva(hva)) {
@@ -1413,6 +1416,7 @@ static long kvm_s390_set_skeys(struct kvm *kvm, struct kvm_s390_skeys *args) 
		if (r)

			break;

	}

	srcu_read_unlock(&kvm->srcu, srcu_idx);

	up_read(&current->mm->mmap_sem);

out:

	kvfree(keys);

arch/s390/kvm/sthyi.c

+5 −2
Original line number Diff line number Diff line
@@ -394,7 +394,7 @@ static int sthyi(u64 vaddr) 
		"srl     %[cc],28\n"

		: [cc] "=d" (cc)

		: [code] "d" (code), [addr] "a" (addr)

		: "memory", "cc");

		: "3", "memory", "cc");

	return cc;

}
@@ -425,7 +425,7 @@ int handle_sthyi(struct kvm_vcpu *vcpu) 
	VCPU_EVENT(vcpu, 3, "STHYI: fc: %llu addr: 0x%016llx", code, addr);

	trace_kvm_s390_handle_sthyi(vcpu, code, addr);



	if (reg1 == reg2 || reg1 & 1 || reg2 & 1 || addr & ~PAGE_MASK)

	if (reg1 == reg2 || reg1 & 1 || reg2 & 1)

		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);



	if (code & 0xffff) {
@@ -433,6 +433,9 @@ int handle_sthyi(struct kvm_vcpu *vcpu) 
		goto out;

	}



	if (addr & ~PAGE_MASK)

		return kvm_s390_inject_program_int(vcpu, PGM_SPECIFICATION);



	/*

	 * If the page has not yet been faulted in, we want to do that

	 * now and not after all the expensive calculations.