[13/19] s390x: virtio machine storage keys

Submitted by Alexander Graf on March 29, 2011, 1:29 p.m.

Details

Message ID 1301405386-25738-14-git-send-email-agraf@suse.de
State New
Headers show

Commit Message

Alexander Graf March 29, 2011, 1:29 p.m.
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>
---
 hw/s390-virtio.c |   21 +++++++++------------
 1 files changed, 9 insertions(+), 12 deletions(-)

Patch hide | download patch | download mbox

diff --git a/hw/s390-virtio.c b/hw/s390-virtio.c
index 850422f..be2c80c 100644
--- a/hw/s390-virtio.c
+++ b/hw/s390-virtio.c
@@ -82,13 +82,12 @@  CPUState *s390_cpu_addr2state(uint16_t cpu_addr)
     return ipi_states[cpu_addr];
 }
 
-int s390_virtio_hypercall(CPUState *env)
+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)
         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;