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target/s390x: Return exception from translate_pages 

Do not raise the exception directly within translate_pages,
but pass it back so that caller may do so.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191001171614.8405-11-richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
Richard Henderson 2019-10-01 10:16:06 -07:00 committed by David Hildenbrand
parent ce7ac79d28
commit a79d225335
1 changed files with 10 additions and 10 deletions
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20
target/s390x/mmu_helper.c
View File

@ -451,25 +451,22 @@ nodat:
* the MEMOP interface.
*/
static int translate_pages(S390CPU *cpu, vaddr addr, int nr_pages,
target_ulong *pages, bool is_write)
target_ulong *pages, bool is_write, uint64_t *tec)
{
uint64_t asc = cpu->env.psw.mask & PSW_MASK_ASC;
CPUS390XState *env = &cpu->env;
int ret, i, pflags;
for (i = 0; i < nr_pages; i++) {
uint64_t tec;
ret = mmu_translate(env, addr, is_write, asc, &pages[i], &pflags, &tec);
ret = mmu_translate(env, addr, is_write, asc, &pages[i], &pflags, tec);
if (ret) {
trigger_access_exception(env, ret, ILEN_AUTO, tec);
return -EFAULT;
return ret;
}
if (!address_space_access_valid(&address_space_memory, pages[i],
TARGET_PAGE_SIZE, is_write,
MEMTXATTRS_UNSPECIFIED)) {
trigger_access_exception(env, PGM_ADDRESSING, ILEN_AUTO, 0);
return -EFAULT;
*tec = 0; /* unused */
return PGM_ADDRESSING;
}
addr += TARGET_PAGE_SIZE;
}
@ -497,6 +494,7 @@ int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
{
int currlen, nr_pages, i;
target_ulong *pages;
uint64_t tec;
int ret;
if (kvm_enabled()) {
@ -510,8 +508,10 @@ int s390_cpu_virt_mem_rw(S390CPU *cpu, vaddr laddr, uint8_t ar, void *hostbuf,
+ 1;
pages = g_malloc(nr_pages * sizeof(*pages));
ret = translate_pages(cpu, laddr, nr_pages, pages, is_write);
if (ret == 0 && hostbuf != NULL) {
ret = translate_pages(cpu, laddr, nr_pages, pages, is_write, &tec);
if (ret) {
trigger_access_exception(&cpu->env, ret, ILEN_AUTO, tec);
} else if (hostbuf != NULL) {
/* Copy data by stepping through the area page by page */
for (i = 0; i < nr_pages; i++) {
currlen = MIN(len, TARGET_PAGE_SIZE - (laddr % TARGET_PAGE_SIZE));