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qemu
s390x-ipl-Consolidate-iplb-validity-chec.patch
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File s390x-ipl-Consolidate-iplb-validity-chec.patch of Package qemu
From: Janosch Frank <frankja@linux.ibm.com> Date: Tue, 10 Mar 2020 05:09:50 -0400 Subject: s390x: ipl: Consolidate iplb validity check into one function References: bsc#1167075 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> (cherry picked from commit 94c21436e5a89143f8b9cb4d089d1a2f3f4fd377) Signed-off-by: Bruce Rogers <brogers@suse.com> --- hw/s390x/ipl.h | 18 +++++++++--------- target/s390x/diag.c | 2 +- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h index d4813105db33253fd1eba53cd7e3..3e44abe1c651d8a01f4708c2801c 100644 --- a/hw/s390x/ipl.h +++ b/hw/s390x/ipl.h @@ -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 diff --git a/target/s390x/diag.c b/target/s390x/diag.c index 53c2f81f2a1aad58d417bc3dc79c..0c81d8e1efbfe37a384199488a72 100644 --- a/target/s390x/diag.c +++ b/target/s390x/diag.c @@ -100,7 +100,7 @@ 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; }
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