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f7767ca301
There is no architectural requirement that SME implies SVE, but our implementation currently assumes it. (FEAT_SME_FA64 does imply SVE.) So if you try to run a CPU with eg "-cpu max,sve=off" you quickly run into an assert when the guest tries to write to SMCR_EL1: #6 0x00007ffff4b38e96 in __GI___assert_fail (assertion=0x5555566e69cb "sm", file=0x5555566e5b24 "../../target/arm/helper.c", line=6865, function=0x5555566e82f0 <__PRETTY_FUNCTION__.31> "sve_vqm1_for_el_sm") at ./assert/assert.c:101 #7 0x0000555555ee33aa in sve_vqm1_for_el_sm (env=0x555557d291f0, el=2, sm=false) at ../../target/arm/helper.c:6865 #8 0x0000555555ee3407 in sve_vqm1_for_el (env=0x555557d291f0, el=2) at ../../target/arm/helper.c:6871 #9 0x0000555555ee3724 in smcr_write (env=0x555557d291f0, ri=0x555557da23b0, value=2147483663) at ../../target/arm/helper.c:6995 #10 0x0000555555fd1dba in helper_set_cp_reg64 (env=0x555557d291f0, rip=0x555557da23b0, value=2147483663) at ../../target/arm/tcg/op_helper.c:839 #11 0x00007fff60056781 in code_gen_buffer () Avoid this unsupported and slightly odd combination by disabling SME when SVE is not present. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2005 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20231127173318.674758-1-peter.maydell@linaro.org |
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| .. | ||
| hvf | ||
| tcg | ||
| arch_dump.c | ||
| arm-powerctl.c | ||
| arm-powerctl.h | ||
| arm-qmp-cmds.c | ||
| common-semi-target.h | ||
| cortex-regs.c | ||
| cpregs.h | ||
| cpu-features.h | ||
| cpu-param.h | ||
| cpu-qom.h | ||
| cpu.c | ||
| cpu.h | ||
| cpu64.c | ||
| debug_helper.c | ||
| gdbstub.c | ||
| gdbstub64.c | ||
| helper.c | ||
| helper.h | ||
| hvf_arm.h | ||
| hyp_gdbstub.c | ||
| idau.h | ||
| internals.h | ||
| Kconfig | ||
| kvm-consts.h | ||
| kvm-stub.c | ||
| kvm.c | ||
| kvm64.c | ||
| kvm_arm.h | ||
| machine.c | ||
| meson.build | ||
| op_addsub.h | ||
| ptw.c | ||
| syndrome.h | ||
| tcg-stubs.c | ||
| trace-events | ||
| trace.h | ||
| vfp_helper.c | ||