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qemu/target/arm
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Peter Maydell 2daf518dd1 target/arm: Don't report Statistical Profiling Extension in ID registers 
The newly added neoverse-n1 CPU has ID register values which indicate
the presence of the Statistical Profiling Extension, because the real
hardware has this feature.  QEMU's TCG emulation does not yet
implement SPE, though (not even as a minimal stub implementation), so
guests will crash if they try to use it because the SPE system
registers don't exist.

Force ID_AA64DFR0_EL1.PMSVer to 0 in CPU realize for TCG, so that
we don't advertise to the guest a feature that doesn't exist.

(We could alternatively do this by editing the value that
aarch64_neoverse_n1_initfn() sets for this ID register, but
suppressing the field in realize means we won't re-introduce this bug
when we add other CPUs that have SPE in hardware, such as the
Neoverse-V1.)

An example of a non-booting guest is current mainline Linux (5.19),
when booting in EL2 on the virt board (ie with -machine
virtualization=on).

Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Message-id: 20220811131127.947334-1-peter.maydell@linaro.org
2022-08-12 11:17:35 +01:00
..
hvf Fix 'writeable' typos 2022-06-08 19:38:47 +01:00
a32-uncond.decode
a32.decode target/arm: Implement ESB instruction 2022-05-09 11:47:54 +01:00
arch_dump.c target/arm: Rename sve_zcr_len_for_el to sve_vqm1_for_el 2022-06-08 19:38:57 +01:00
arm_ldst.h
arm-powerctl.c
arm-powerctl.h
common-semi-target.h semihosting: Split out common-semi-target.h 2022-06-28 04:35:07 +05:30
cpregs.h target/arm: Move define_debug_regs() to debug_helper.c 2022-07-07 11:37:33 +01:00
cpu64.c target/arm: Enable SME for -cpu max 2022-07-11 13:43:51 +01:00
cpu_tcg.c target/arm: Implement AArch32 DBGDEVID, DBGDEVID1, DBGDEVID2 2022-07-07 11:37:33 +01:00
cpu-param.h Normalize header guard symbol definition 2022-05-11 16:50:26 +02:00
cpu-qom.h target: Introduce and use OBJECT_DECLARE_CPU_TYPE() macro 2022-03-06 22:23:09 +01:00
cpu.c target/arm: Don't report Statistical Profiling Extension in ID registers 2022-08-12 11:17:35 +01:00
cpu.h target/arm: Add MO_128 entry to pred_esz_masks[] 2022-07-26 13:38:23 +01:00
crypto_helper.c crypto: move sm4_sbox from target/arm 2022-04-29 10:47:45 +10:00
debug_helper.c target/arm: Store TCR_EL* registers as uint64_t 2022-07-18 13:20:13 +01:00
gdbstub64.c target/arm: Rename sve_zcr_len_for_el to sve_vqm1_for_el 2022-06-08 19:38:57 +01:00
gdbstub.c Fix 'writeable' typos 2022-06-08 19:38:47 +01:00
helper-a64.c target/arm: Change CPUArchState.aarch64 to bool 2022-04-22 14:44:54 +01:00
helper-a64.h
helper-mve.h
helper-sme.h target/arm: Implement SME integer outer product 2022-07-11 13:43:51 +01:00
helper-sve.h target/arm: Implement REVD 2022-07-11 13:43:51 +01:00
helper.c target/arm: display deprecation status in '-cpu help' 2022-08-05 16:18:15 +01:00
helper.h target/arm: Implement SCLAMP, UCLAMP 2022-07-11 13:43:51 +01:00
hvf_arm.h
idau.h
internals.h target/arm: Honour VTCR_EL2 bits in Secure EL2 2022-07-18 13:20:14 +01:00
iwmmxt_helper.c
Kconfig
kvm64.c target/arm: Move sve probe inside kvm >= 4.15 branch 2022-08-01 16:21:18 +01:00
kvm_arm.h target/arm: Use uint32_t instead of bitmap for sve vq's 2022-06-08 19:38:57 +01:00
kvm-consts.h
kvm-stub.c target/arm: Avoid bare abort() or assert(0) 2022-05-05 09:35:51 +01:00
kvm.c kvm: don't use perror() without useful errno 2022-07-29 00:15:02 +02:00
m_helper.c semihosting: Return void from do_common_semihosting 2022-06-28 04:35:07 +05:30
m-nocp.decode
machine.c target/arm: Add the SME ZA storage to CPUARMState 2022-06-27 11:18:17 +01:00
meson.build target/arm: Trap non-streaming usage when Streaming SVE is active 2022-07-11 13:19:35 +01:00
monitor.c
mte_helper.c
mve_helper.c target/arm: Use expand_pred_b in mve_helper.c 2022-06-08 19:38:58 +01:00
mve.decode
neon_helper.c Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
neon-dp.decode
neon-ls.decode
neon-shared.decode
op_addsub.h
op_helper.c target/arm: Introduce helper_exception_with_syndrome 2022-06-10 14:32:34 +01:00
pauth_helper.c compiler.h: replace QEMU_NORETURN with G_NORETURN 2022-04-21 17:03:51 +04:00
psci.c
ptw.c target/arm: Store TCR_EL* registers as uint64_t 2022-07-18 13:20:13 +01:00
sme_helper.c target/arm: Implement SME integer outer product 2022-07-11 13:43:51 +01:00
sme-fa64.decode target/arm: Mark LD1RO as non-streaming 2022-07-11 13:19:35 +01:00
sme.decode target/arm: Implement SME integer outer product 2022-07-11 13:43:51 +01:00
sve_helper.c target/arm: Implement REVD 2022-07-11 13:43:51 +01:00
sve_ldst_internal.h target/arm: Export sve contiguous ldst support functions 2022-06-08 19:38:58 +01:00
sve.decode target/arm: Implement SCLAMP, UCLAMP 2022-07-11 13:43:51 +01:00
syndrome.h target/arm: Add syn_smetrap 2022-06-27 11:18:17 +01:00
t16.decode
t32.decode target/arm: Implement ESB instruction 2022-05-09 11:47:54 +01:00
tlb_helper.c target/arm: Fold regime_tcr() and regime_tcr_value() together 2022-07-18 13:20:13 +01:00
trace-events
trace.h
translate-a32.h Clean up header guards that don't match their file name 2022-05-11 16:49:06 +02:00
translate-a64.c target/arm: Don't set syndrome ISS for loads and stores with writeback 2022-07-18 13:20:14 +01:00
translate-a64.h target/arm: Export unpredicated ld/st from translate-sve.c 2022-07-11 13:19:35 +01:00
translate-m-nocp.c target/arm: Introduce gen_exception_insn 2022-06-10 14:32:32 +01:00
translate-mve.c target/arm: Introduce gen_exception_insn 2022-06-10 14:32:32 +01:00
translate-neon.c target/arm: Avoid bare abort() or assert(0) 2022-05-05 09:35:51 +01:00
translate-sme.c target/arm: Implement SME integer outer product 2022-07-11 13:43:51 +01:00
translate-sve.c target/arm: Add MO_128 entry to pred_esz_masks[] 2022-07-26 13:38:23 +01:00
translate-vfp.c target/arm: Trap non-streaming usage when Streaming SVE is active 2022-07-11 13:19:35 +01:00
translate.c misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
translate.h target/arm: Implement SME MOVA 2022-07-11 13:19:35 +01:00
vec_helper.c target/arm: Implement SCLAMP, UCLAMP 2022-07-11 13:43:51 +01:00
vec_internal.h target/arm: Export bfdotadd from vec_helper.c 2022-06-08 19:38:58 +01:00
vfp_helper.c
vfp-uncond.decode
vfp.decode