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s390x: protvirt: Move IO control structures over SIDA

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For protected guests, we need to put the IO emulation results into the
SIDA, so SIE will write them into the guest at the next entry.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200319131921.2367-14-frankja@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
Janosch Frank 2020-03-19 09:19:18 -04:00 committed by Cornelia Huck
parent c10b708752
commit fcc10c1470
1 changed files with 45 additions and 16 deletions
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61
target/s390x/ioinst.c
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@ -138,7 +138,9 @@ void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
s390_program_interrupt(env, PGM_SPECIFICATION, ra);
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &schib, sizeof(schib))) {
if (s390_is_pv()) {
s390_cpu_pv_mem_read(cpu, addr, &schib, sizeof(schib));
} else if (s390_cpu_virt_mem_read(cpu, addr, ar, &schib, sizeof(schib))) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
@ -195,7 +197,9 @@ void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
s390_program_interrupt(env, PGM_SPECIFICATION, ra);
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &orig_orb, sizeof(orb))) {
if (s390_is_pv()) {
s390_cpu_pv_mem_read(cpu, addr, &orig_orb, sizeof(orb));
} else if (s390_cpu_virt_mem_read(cpu, addr, ar, &orig_orb, sizeof(orb))) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
@ -231,14 +235,19 @@ void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb, uintptr_t ra)
cc = css_do_stcrw(&crw);
/* 0 - crw stored, 1 - zeroes stored */
if (s390_cpu_virt_mem_write(cpu, addr, ar, &crw, sizeof(crw)) == 0) {
if (s390_is_pv()) {
s390_cpu_pv_mem_write(cpu, addr, &crw, sizeof(crw));
setcc(cpu, cc);
} else {
if (cc == 0) {
/* Write failed: requeue CRW since STCRW is suppressing */
css_undo_stcrw(&crw);
if (s390_cpu_virt_mem_write(cpu, addr, ar, &crw, sizeof(crw)) == 0) {
setcc(cpu, cc);
} else {
if (cc == 0) {
/* Write failed: requeue CRW since STCRW is suppressing */
css_undo_stcrw(&crw);
}
s390_cpu_virt_mem_handle_exc(cpu, ra);
}
s390_cpu_virt_mem_handle_exc(cpu, ra);
}
}
@ -260,6 +269,13 @@ void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb,
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid)) {
/*
* The Ultravisor checks schid bit 16 to be one and bits 0-12
* to be 0 and injects a operand exception itself.
*
* Hence we should never end up here.
*/
g_assert(!s390_is_pv());
/*
* As operand exceptions have a lower priority than access exceptions,
* we check whether the memory area is writeable (injecting the
@ -292,14 +308,17 @@ void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb,
}
}
if (cc != 3) {
if (s390_cpu_virt_mem_write(cpu, addr, ar, &schib,
sizeof(schib)) != 0) {
if (s390_is_pv()) {
s390_cpu_pv_mem_write(cpu, addr, &schib, sizeof(schib));
} else if (s390_cpu_virt_mem_write(cpu, addr, ar, &schib,
sizeof(schib)) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
} else {
/* Access exceptions have a higher priority than cc3 */
if (s390_cpu_virt_mem_check_write(cpu, addr, ar, sizeof(schib)) != 0) {
if (!s390_is_pv() &&
s390_cpu_virt_mem_check_write(cpu, addr, ar, sizeof(schib)) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
@ -336,7 +355,9 @@ int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
}
/* 0 - status pending, 1 - not status pending, 3 - not operational */
if (cc != 3) {
if (s390_cpu_virt_mem_write(cpu, addr, ar, &irb, irb_len) != 0) {
if (s390_is_pv()) {
s390_cpu_pv_mem_write(cpu, addr, &irb, irb_len);
} else if (s390_cpu_virt_mem_write(cpu, addr, ar, &irb, irb_len) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
@ -344,7 +365,8 @@ int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra)
} else {
irb_len = sizeof(irb) - sizeof(irb.emw);
/* Access exceptions have a higher priority than cc3 */
if (s390_cpu_virt_mem_check_write(cpu, addr, ar, irb_len) != 0) {
if (!s390_is_pv() &&
s390_cpu_virt_mem_check_write(cpu, addr, ar, irb_len) != 0) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
@ -642,7 +664,9 @@ void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb, uintptr_t ra)
* present CHSC sub-handlers ... if we ever need more, we should take
* care of req->len here first.
*/
if (s390_cpu_virt_mem_read(cpu, addr, reg, buf, sizeof(ChscReq))) {
if (s390_is_pv()) {
s390_cpu_pv_mem_read(cpu, addr, buf, sizeof(ChscReq));
} else if (s390_cpu_virt_mem_read(cpu, addr, reg, buf, sizeof(ChscReq))) {
s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
@ -675,11 +699,16 @@ void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb, uintptr_t ra)
break;
}
if (!s390_cpu_virt_mem_write(cpu, addr + len, reg, res,
be16_to_cpu(res->len))) {
if (s390_is_pv()) {
s390_cpu_pv_mem_write(cpu, addr + len, res, be16_to_cpu(res->len));
setcc(cpu, 0); /* Command execution complete */
} else {
s390_cpu_virt_mem_handle_exc(cpu, ra);
if (!s390_cpu_virt_mem_write(cpu, addr + len, reg, res,
be16_to_cpu(res->len))) {
setcc(cpu, 0); /* Command execution complete */
} else {
s390_cpu_virt_mem_handle_exc(cpu, ra);
}
}
}