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s390x: virtio machine storage keys

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For emulation (and migration) we need to know about the guest's storage keys.
These are separate from actual RAM contents, so we need to allocate them in
parallel to RAM.

While touching the file, this patch also adjusts the hypercall function
to a new syntax that aligns better with tcg emulated code.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Alexander Graf 2011-04-15 17:32:50 +02:00 committed by Aurelien Jarno
parent 8103b4d161
commit 8d5192ee15
1 changed files with 9 additions and 12 deletions
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21
hw/s390-virtio.c
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@ -82,13 +82,12 @@ CPUState *s390_cpu_addr2state(uint16_t cpu_addr)
return ipi_states[cpu_addr];
}
int s390_virtio_hypercall(CPUState *env, uint64_t mem_, uint64_t hypercall)
int s390_virtio_hypercall(CPUState *env, uint64_t mem, uint64_t hypercall)
{
int r = 0, i;
target_ulong mem = env->regs[2];
dprintf("KVM hypercall: %ld\n", env->regs[1]);
switch (env->regs[1]) {
dprintf("KVM hypercall: %ld\n", hypercall);
switch (hypercall) {
case KVM_S390_VIRTIO_NOTIFY:
if (mem > ram_size) {
VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus,
@ -128,8 +127,7 @@ int s390_virtio_hypercall(CPUState *env, uint64_t mem_, uint64_t hypercall)
break;
}
env->regs[2] = r;
return 0;
return r;
}
/* PC hardware initialisation */
@ -145,14 +143,9 @@ static void s390_init(ram_addr_t ram_size,
ram_addr_t kernel_size = 0;
ram_addr_t initrd_offset;
ram_addr_t initrd_size = 0;
uint8_t *storage_keys;
int i;
/* XXX we only work on KVM for now */
if (!kvm_enabled()) {
fprintf(stderr, "The S390 target only works with KVM enabled\n");
exit(1);
}
/* get a BUS */
s390_bus = s390_virtio_bus_init(&ram_size);
@ -161,6 +154,9 @@ static void s390_init(ram_addr_t ram_size,
ram_addr = qemu_ram_alloc(NULL, "s390.ram", ram_size);
cpu_register_physical_memory(0, ram_size, ram_addr);
/* allocate storage keys */
storage_keys = qemu_mallocz(ram_size / TARGET_PAGE_SIZE);
/* init CPUs */
if (cpu_model == NULL) {
cpu_model = "host";
@ -178,6 +174,7 @@ static void s390_init(ram_addr_t ram_size,
ipi_states[i] = tmp_env;
tmp_env->halted = 1;
tmp_env->exception_index = EXCP_HLT;
tmp_env->storage_keys = storage_keys;
}
env->halted = 0;