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target/s390x/mmu_helper: Do not ignore address_space_rw() errors

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If a address_space_rw() call ever fails, break the loop and
return the PGM_ADDRESSING error (after triggering an access
exception).

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251008141410.99865-3-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé
2025-10-16 18:19:23 +02:00
committed by Thomas Huth
parent 02cf15e9bb
commit d6f7f9254e
1 changed files with 8 additions and 2 deletions
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target/s390x/mmu_helper.c
+8 -2
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@@ -546,9 +546,15 @@ int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
/* Copy data by stepping through the area page by page */
for (i = 0; i < nr_pages; i++) {
MemTxResult res;
currlen = MIN(len, TARGET_PAGE_SIZE - (laddr % TARGET_PAGE_SIZE));
address_space_rw(as, pages[i] | (laddr & ~TARGET_PAGE_MASK),
attrs, hostbuf, currlen, is_write);
res = address_space_rw(as, pages[i] | (laddr & ~TARGET_PAGE_MASK),
attrs, hostbuf, currlen, is_write);
if (res != MEMTX_OK) {
ret = PGM_ADDRESSING;
break;
}
laddr += currlen;
hostbuf += currlen;
len -= currlen;