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21be74a9a5
The SET ADDRESS SPACE CONTROL FAST instruction is not privileged, it can be used from problem space, too. Just the switching to the home address space is privileged and should still generate a privilege exception. This bug is e.g. causing programs like Java that use the "getcpu" vdso kernel function to crash (see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990417#26 ). While we're at it, also check if DAT is not enabled. In that case the instruction is supposed to generate a special operation exception. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/655 Message-Id: <20221201184443.136355-1-thuth@redhat.com> Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com> |
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| kvm | 2 years ago | |
| tcg | 2 years ago | |
| Kconfig | 3 years ago | |
| arch_dump.c | 2 years ago | |
| cpu-dump.c | 3 years ago | |
| cpu-param.h | 3 years ago | |
| cpu-qom.h | 3 years ago | |
| cpu-sysemu.c | 3 years ago | |
| cpu.c | 2 years ago | |
| cpu.h | 3 years ago | |
| cpu_features.c | 4 years ago | |
| cpu_features.h | 4 years ago | |
| cpu_features_def.h | 4 years ago | |
| cpu_features_def.h.inc | 2 years ago | |
| cpu_models.c | 2 years ago | |
| cpu_models.h | 2 years ago | |
| cpu_models_sysemu.c | 3 years ago | |
| cpu_models_user.c | 3 years ago | |
| diag.c | 3 years ago | |
| gdbstub.c | 3 years ago | |
| gen-features.c | 2 years ago | |
| helper.c | 3 years ago | |
| helper.h | 3 years ago | |
| interrupt.c | 3 years ago | |
| ioinst.c | 2 years ago | |
| machine.c | 3 years ago | |
| meson.build | 3 years ago | |
| mmu_helper.c | 3 years ago | |
| s390x-internal.h | 2 years ago | |
| sigp.c | 3 years ago | |
| trace-events | 3 years ago | |
| trace.h | 4 years ago | |