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| author | David Hildenbrand <david@redhat.com> | 2017-06-09 16:21:56 +0200 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-06-13 11:09:39 -0700 |
| commit | becf8217deb2afc347d5172d9f30c8a8964b8b27 (patch) | |
| tree | 47f7da6a3210b63ee7346bbf5f143abc9358d7f3 /target/s390x/mmu_helper.c | |
| parent | 465aec461726d5157d458acee94584f8cdfbe4b7 (diff) | |
| download | qemu-becf8217deb2afc347d5172d9f30c8a8964b8b27.zip qemu-becf8217deb2afc347d5172d9f30c8a8964b8b27.tar.gz qemu-becf8217deb2afc347d5172d9f30c8a8964b8b27.tar.bz2 | |
target/s390x: rework PGM interrupt psw.addr handling
We can tell from the program interrupt code, whether a program interrupt
has to forward the address in the PGM new PSW
(suppressing/terminated/completed) to point at the next instruction, or
if it is nullifying and the PSW address does not have to be incremented.
So let's not modify the PSW address outside of the injection path and
handle this internally. We just have to handle instruction length
auto detection if no valid instruction length can be provided.
This should fix various program interrupt injection paths, where the
PSW was not properly forwarded.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20170609142156.18767-3-david@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target/s390x/mmu_helper.c')
| -rw-r--r-- | target/s390x/mmu_helper.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/target/s390x/mmu_helper.c b/target/s390x/mmu_helper.c index 501e390..a873dc4 100644 --- a/target/s390x/mmu_helper.c +++ b/target/s390x/mmu_helper.c @@ -79,13 +79,13 @@ static void trigger_prot_fault(CPUS390XState *env, target_ulong vaddr, return; } - trigger_access_exception(env, PGM_PROTECTION, ILEN_LATER_INC, tec); + trigger_access_exception(env, PGM_PROTECTION, ILEN_AUTO, tec); } static void trigger_page_fault(CPUS390XState *env, target_ulong vaddr, uint32_t type, uint64_t asc, int rw, bool exc) { - int ilen = ILEN_LATER; + int ilen = ILEN_AUTO; uint64_t tec; tec = vaddr | (rw == MMU_DATA_STORE ? FS_WRITE : FS_READ) | asc >> 46; @@ -431,7 +431,7 @@ static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages, for (i = 0; i < nr_pages; i++) { /* Low-address protection? */ if (lowprot && (addr < 512 || (addr >= 4096 && addr < 4096 + 512))) { - trigger_access_exception(env, PGM_PROTECTION, ILEN_LATER_INC, 0); + trigger_access_exception(env, PGM_PROTECTION, ILEN_AUTO, 0); return -EACCES; } ret = mmu_translate(env, addr, is_write, asc, &pages[i], &pflags, true); |