}
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer, sizeof(*reqh))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
reqh = (ClpReqHdr *)buffer;
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
req_len + sizeof(*resh))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
resh = (ClpRspHdr *)(buffer + req_len);
if (s390_cpu_virt_mem_read(cpu, env->regs[r2], r2, buffer,
req_len + res_len)) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
out:
if (s390_cpu_virt_mem_write(cpu, env->regs[r2], r2, buffer,
req_len + res_len)) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
setcc(cpu, cc);
}
if (s390_cpu_virt_mem_read(cpu, gaddr, ar, buffer, len)) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
}
if (s390_cpu_virt_mem_read(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
out:
if (s390_cpu_virt_mem_write(cpu, fiba, ar, (uint8_t *)&fib, sizeof(fib))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return 0;
}
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &schib, sizeof(schib))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
if (ioinst_disassemble_sch_ident(reg1, &m, &cssid, &ssid, &schid) ||
return;
}
if (s390_cpu_virt_mem_read(cpu, addr, ar, &orig_orb, sizeof(orb))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
copy_orb_from_guest(&orb, &orig_orb);
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 a suppressing instruction */
- css_undo_stcrw(&crw);
+ } else {
+ if (cc == 0) {
+ /* Write failed: requeue CRW since STCRW is suppressing */
+ css_undo_stcrw(&crw);
+ }
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
}
}
*/
if (!s390_cpu_virt_mem_check_write(cpu, addr, ar, sizeof(schib))) {
s390_program_interrupt(env, PGM_OPERAND, 4, ra);
+ } else {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
}
return;
}
if (cc != 3) {
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) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
}
/* 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) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
css_do_tsch_update_subch(sch);
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) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return -EFAULT;
}
}
* care of req->len here first.
*/
if (s390_cpu_virt_mem_read(cpu, addr, reg, buf, sizeof(ChscReq))) {
+ s390_cpu_virt_mem_handle_exc(cpu, ra);
return;
}
req = (ChscReq *)buf;
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);
}
}
#include "internal.h"
#include "kvm_s390x.h"
#include "sysemu/kvm.h"
+#include "exec/exec-all.h"
#include "trace.h"
#include "hw/s390x/storage-keys.h"
*
* Copy from/to guest memory using logical addresses. Note that we inject a
* program interrupt in case there is an error while accessing the memory.
+ *
+ * This function will always return (also for TCG), make sure to call
+ * s390_cpu_virt_mem_handle_exc() to properly exit the CPU loop.
*/
int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
int len, bool is_write)
return ret;
}
+void s390_cpu_virt_mem_handle_exc(S390CPU *cpu, uintptr_t ra)
+{
+ /* KVM will handle the interrupt automatically, TCG has to exit the TB */
+#ifdef CONFIG_TCG
+ if (tcg_enabled()) {
+ cpu_loop_exit_restore(CPU(cpu), ra);
+ }
+#endif
+}
+
/**
* Translate a real address into a physical (absolute) address.
* @param raddr the real address