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s390x: ipl: Consolidate iplb validity check into one function

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It's nicer to just call one function than calling a function for each
possible iplb type.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200310090950.61172-1-frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Janosch Frank 2020-03-10 05:09:50 -04:00 committed by Christian Borntraeger
parent 0a01e082a4
commit 94c21436e5
2 changed files with 10 additions and 10 deletions
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18
hw/s390x/ipl.h
View File

@ -173,16 +173,16 @@ static inline bool iplb_valid_len(IplParameterBlock *iplb)
return be32_to_cpu(iplb->len) <= sizeof(IplParameterBlock);
}
static inline bool iplb_valid_ccw(IplParameterBlock *iplb)
static inline bool iplb_valid(IplParameterBlock *iplb)
{
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN &&
iplb->pbt == S390_IPL_TYPE_CCW;
}
static inline bool iplb_valid_fcp(IplParameterBlock *iplb)
{
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN &&
iplb->pbt == S390_IPL_TYPE_FCP;
switch (iplb->pbt) {
case S390_IPL_TYPE_FCP:
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_FCP_LEN;
case S390_IPL_TYPE_CCW:
return be32_to_cpu(iplb->len) >= S390_IPLB_MIN_CCW_LEN;
default:
return false;
}
}
#endif

2
target/s390x/diag.c
View File

@ -117,7 +117,7 @@ void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3, uintptr_t ra)
cpu_physical_memory_read(addr, iplb, be32_to_cpu(iplb->len));
if (!iplb_valid_ccw(iplb) && !iplb_valid_fcp(iplb)) {
if (!iplb_valid(iplb)) {
env->regs[r1 + 1] = DIAG_308_RC_INVALID;
goto out;
}