s390x/pci: fix pcistb length
In pcistb_service_call, we are grabbing 8 bits from a guest register to
indicate the length of the store operation -- but per the architecture
the length is actually defined by 13 bits of the guest register.
Fixes: 863f6f52b7
("s390: implement pci instructions")
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1608243397-29428-2-git-send-email-mjrosato@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
parent
d986bc4a1c
commit
704d7a2304
|
@ -755,7 +755,7 @@ int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
|
|||
int i;
|
||||
uint32_t fh;
|
||||
uint8_t pcias;
|
||||
uint8_t len;
|
||||
uint16_t len;
|
||||
uint8_t buffer[128];
|
||||
|
||||
if (env->psw.mask & PSW_MASK_PSTATE) {
|
||||
|
@ -765,7 +765,7 @@ int pcistb_service_call(S390CPU *cpu, uint8_t r1, uint8_t r3, uint64_t gaddr,
|
|||
|
||||
fh = env->regs[r1] >> 32;
|
||||
pcias = (env->regs[r1] >> 16) & 0xf;
|
||||
len = env->regs[r1] & 0xff;
|
||||
len = env->regs[r1] & 0x1fff;
|
||||
offset = env->regs[r3];
|
||||
|
||||
if (!(fh & FH_MASK_ENABLE)) {
|
||||
|
|
Loading…
Reference in a new issue