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903dbefc2b
The LDRT/STRT "unprivileged load/store" instructions behave like normal ones if executed at EL0. We handle this correctly for the load/store semantics, but get the MTE checking wrong. We always look at s->mte_active[is_unpriv] to see whether we should be doing MTE checks, but in hflags.c when we set the TB flags that will be used to fill the mte_active[] array we only set the MTE0_ACTIVE bit if UNPRIV is true (i.e. we are not at EL0). This means that a LDRT at EL0 will see s->mte_active[1] as 0, and will not do MTE checks even when MTE is enabled. To avoid the translate-time code having to do an explicit check on s->unpriv to see if it is OK to index into the mte_active[] array, duplicate MTE_ACTIVE into MTE0_ACTIVE when UNPRIV is false. (This isn't a very serious bug because generally nobody executes LDRT/STRT at EL0, because they have no use there.) Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20230912140434.1333369-2-peter.maydell@linaro.org |
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| .. | ||
| a32-uncond.decode | ||
| a32.decode | ||
| a64.decode | ||
| arm_ldst.h | ||
| cpu32.c | ||
| cpu64.c | ||
| crypto_helper.c | ||
| helper-a64.c | ||
| helper-a64.h | ||
| helper-mve.h | ||
| helper-sme.h | ||
| helper-sve.h | ||
| hflags.c | ||
| iwmmxt_helper.c | ||
| m-nocp.decode | ||
| m_helper.c | ||
| meson.build | ||
| mte_helper.c | ||
| mve.decode | ||
| mve_helper.c | ||
| neon-dp.decode | ||
| neon-ls.decode | ||
| neon-shared.decode | ||
| neon_helper.c | ||
| op_helper.c | ||
| pauth_helper.c | ||
| psci.c | ||
| sme-fa64.decode | ||
| sme.decode | ||
| sme_helper.c | ||
| sve.decode | ||
| sve_helper.c | ||
| sve_ldst_internal.h | ||
| t16.decode | ||
| t32.decode | ||
| tlb_helper.c | ||
| translate-a32.h | ||
| translate-a64.c | ||
| translate-a64.h | ||
| translate-m-nocp.c | ||
| translate-mve.c | ||
| translate-neon.c | ||
| translate-sme.c | ||
| translate-sve.c | ||
| translate-vfp.c | ||
| translate.c | ||
| translate.h | ||
| vec_helper.c | ||
| vec_internal.h | ||
| vfp-uncond.decode | ||
| vfp.decode | ||