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| author | Alex Bennée <alex.bennee@linaro.org> | 2021-04-22 16:44:27 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-04-23 14:10:56 +0100 |
| commit | ffa090bc56e73e287a63261e70ac02c0970be61a (patch) | |
| tree | 7e1075f45804906fb4430d5d44ff02a94eea9035 /target | |
| parent | bc38e31b4e0366f3a70c0939abde4c3dd6e0fa30 (diff) | |
| download | qemu-ffa090bc56e73e287a63261e70ac02c0970be61a.zip | |
target/s390x: fix s390_probe_access to check PAGE_WRITE_ORG for writeability
We can remove PAGE_WRITE when (internally) marking a page read-only
because it contains translated code. This can get confused when we are
executing signal return code on signal stacks.
Fixes: e56552cf07 ("target/s390x: Implement the MVPG condition-code-option bit")
Found-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-id: 20210422154427.13038-1-alex.bennee@linaro.org
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/s390x/mem_helper.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c index 12e84a4285..f6a7d29273 100644 --- a/target/s390x/mem_helper.c +++ b/target/s390x/mem_helper.c @@ -145,7 +145,7 @@ static int s390_probe_access(CPUArchState *env, target_ulong addr, int size, #if defined(CONFIG_USER_ONLY) flags = page_get_flags(addr); - if (!(flags & (access_type == MMU_DATA_LOAD ? PAGE_READ : PAGE_WRITE))) { + if (!(flags & (access_type == MMU_DATA_LOAD ? PAGE_READ : PAGE_WRITE_ORG))) { env->__excp_addr = addr; flags = (flags & PAGE_VALID) ? PGM_PROTECTION : PGM_ADDRESSING; if (nonfault) { |