qemu-kvm/SOURCES/kvm-s390x-protvirt-Move-diag-308-data-over-SIDA.patch

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From 33d4e21cfd236aecd9e4dbe8228d058fd1f22400 Mon Sep 17 00:00:00 2001
From: Thomas Huth <thuth@redhat.com>
Date: Fri, 29 May 2020 05:54:12 -0400
Subject: [PATCH 30/42] s390x: protvirt: Move diag 308 data over SIDA
RH-Author: Thomas Huth <thuth@redhat.com>
Message-id: <20200529055420.16855-31-thuth@redhat.com>
Patchwork-id: 97048
O-Subject: [RHEL-8.3.0 qemu-kvm PATCH v2 30/38] s390x: protvirt: Move diag 308 data over SIDA
Bugzilla: 1828317
RH-Acked-by: Claudio Imbrenda <cimbrend@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
From: Janosch Frank <frankja@linux.ibm.com>
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>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200319131921.2367-12-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
(cherry picked from commit 9c61e11238cfa8f70e3eb90aac5d3e5646e5432f)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
target/s390x/diag.c | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/target/s390x/diag.c b/target/s390x/diag.c
index b2cbefb8cf..1a48429564 100644
--- a/target/s390x/diag.c
+++ b/target/s390x/diag.c
@@ -75,6 +75,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
{
bool valid;
CPUState *cs = env_cpu(env);
+ S390CPU *cpu = S390_CPU(cs);
uint64_t addr = env->regs[r1];
uint64_t subcode = env->regs[r3];
IplParameterBlock *iplb;
@@ -111,13 +112,22 @@ 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));
+ }
valid = subcode == DIAG308_PV_SET ? iplb_valid_pv(iplb) : iplb_valid(iplb);
if (!valid) {
@@ -140,12 +150,17 @@ out:
} else {
iplb = s390_ipl_get_iplb();
}
- if (iplb) {
+ 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));
- env->regs[r1 + 1] = DIAG_308_RC_OK;
} else {
- env->regs[r1 + 1] = DIAG_308_RC_NO_CONF;
+ 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();
--
2.27.0