diff mbox series

[v8,10/15] s390x: protvirt: Move diag 308 data over SIDA

Message ID 20200310134008.130038-11-frankja@linux.ibm.com
State New
Headers show
Series s390x: Protected Virtualization support | expand

Commit Message

Janosch Frank March 10, 2020, 1:40 p.m. UTC 
For protected guests the IPIB is written/read to/from the SIDA, so we
need those accesses to go through s390_cpu_pv_mem_read/write().

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
 target/s390x/diag.c | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

Comments

David Hildenbrand March 10, 2020, 3 p.m. UTC | #1 
On 10.03.20 14:40, Janosch Frank wrote:
> For protected guests the IPIB is written/read to/from the SIDA, so we
> need those accesses to go through s390_cpu_pv_mem_read/write().
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> ---
>  target/s390x/diag.c | 27 +++++++++++++++++++++------
>  1 file changed, 21 insertions(+), 6 deletions(-)
> 
> diff --git a/target/s390x/diag.c b/target/s390x/diag.c
> index 02918b37b8..417c4b53ab 100644
> --- a/target/s390x/diag.c
> +++ b/target/s390x/diag.c
> @@ -87,6 +87,7 @@ static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr,
>  void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
>  {
>      CPUState *cs = env_cpu(env);
> +    S390CPU *cpu = S390_CPU(cs);
>      uint64_t addr =  env->regs[r1];
>      uint64_t subcode = env->regs[r3];
>      IplParameterBlock *iplb;
> @@ -123,13 +124,22 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
>              return;
>          }
>          iplb = g_new0(IplParameterBlock, 1);
> -        cpu_physical_memory_read(addr, iplb, sizeof(iplb->len));
> +        if (!s390_is_pv()) {
> +            cpu_physical_memory_read(addr, iplb, sizeof(iplb->len));
> +        } else {
> +            s390_cpu_pv_mem_read(cpu, 0, iplb, sizeof(iplb->len));
> +        }
> +
>          if (!iplb_valid_len(iplb)) {
>              env->regs[r1 + 1] = DIAG_308_RC_INVALID;
>              goto out;
>          }
>  
> -        cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
> +        if (!s390_is_pv()) {
> +            cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
> +        } else {
> +            s390_cpu_pv_mem_read(cpu, 0, iplb, be32_to_cpu(iplb->len));
> +        }
>  
>          if (!iplb_valid(iplb)) {
>              env->regs[r1 + 1] = DIAG_308_RC_INVALID;
> @@ -151,12 +161,17 @@ out:
>          } else {
>              iplb = s390_ipl_get_iplb();
>          }
> -        if (iplb) {
> -            cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len));
> -            env->regs[r1 + 1] = DIAG_308_RC_OK;
> -        } else {
> +        if (!iplb) {
>              env->regs[r1 + 1] = DIAG_308_RC_NO_CONF;
> +            return;
>          }
> +
> +        if (!s390_is_pv()) {
> +            cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len));
> +        } else {
> +            s390_cpu_pv_mem_write(cpu, 0, iplb, be32_to_cpu(iplb->len));
> +        }
> +        env->regs[r1 + 1] = DIAG_308_RC_OK;
>          return;
>      case DIAG308_PV_START:
>          iplb = s390_ipl_get_iplb_pv();
> 

Reviewed-by: David Hildenbrand <david@redhat.com>
diff mbox series

Patch

diff --git a/target/s390x/diag.c b/target/s390x/diag.c
index 02918b37b8..417c4b53ab 100644
--- a/target/s390x/diag.c
+++ b/target/s390x/diag.c
@@ -87,6 +87,7 @@  static int diag308_parm_check(CPUS390XState *env, uint64_t r1, uint64_t addr,
 void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
 {
     CPUState *cs = env_cpu(env);
+    S390CPU *cpu = S390_CPU(cs);
     uint64_t addr =  env->regs[r1];
     uint64_t subcode = env->regs[r3];
     IplParameterBlock *iplb;
@@ -123,13 +124,22 @@  void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
             return;
         }
         iplb = g_new0(IplParameterBlock, 1);
-        cpu_physical_memory_read(addr, iplb, sizeof(iplb->len));
+        if (!s390_is_pv()) {
+            cpu_physical_memory_read(addr, iplb, sizeof(iplb->len));
+        } else {
+            s390_cpu_pv_mem_read(cpu, 0, iplb, sizeof(iplb->len));
+        }
+
         if (!iplb_valid_len(iplb)) {
             env->regs[r1 + 1] = DIAG_308_RC_INVALID;
             goto out;
         }
 
-        cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
+        if (!s390_is_pv()) {
+            cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
+        } else {
+            s390_cpu_pv_mem_read(cpu, 0, iplb, be32_to_cpu(iplb->len));
+        }
 
         if (!iplb_valid(iplb)) {
             env->regs[r1 + 1] = DIAG_308_RC_INVALID;
@@ -151,12 +161,17 @@  out:
         } else {
             iplb = s390_ipl_get_iplb();
         }
-        if (iplb) {
-            cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len));
-            env->regs[r1 + 1] = DIAG_308_RC_OK;
-        } else {
+        if (!iplb) {
             env->regs[r1 + 1] = DIAG_308_RC_NO_CONF;
+            return;
         }
+
+        if (!s390_is_pv()) {
+            cpu_physical_memory_write(addr, iplb, be32_to_cpu(iplb->len));
+        } else {
+            s390_cpu_pv_mem_write(cpu, 0, iplb, be32_to_cpu(iplb->len));
+        }
+        env->regs[r1 + 1] = DIAG_308_RC_OK;
         return;
     case DIAG308_PV_START:
         iplb = s390_ipl_get_iplb_pv();