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qemu/target/arm
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Zhuojia Shen f9ac778898 target/arm: trap DCC access in user mode emulation 
Accessing EL0-accessible Debug Communication Channel (DCC) registers in
user mode emulation is currently enabled.  However, it does not match
Linux behavior as Linux sets MDSCR_EL1.TDCC on startup to disable EL0
access to DCC (see __cpu_setup() in arch/arm64/mm/proc.S).

This patch fixes access_tdcc() to check MDSCR_EL1.TDCC for EL0 and sets
MDSCR_EL1.TDCC for user mode emulation to match Linux.

Signed-off-by: Zhuojia Shen <chaosdefinition@hotmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: DS7PR12MB630905198DD8E69F6817544CAC4EA@DS7PR12MB6309.namprd12.prod.outlook.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-06-06 10:19:40 +01:00
..
hvf hvf: add guest debugging handlers for Apple Silicon hosts 2023-06-06 10:19:30 +01:00
tcg target/arm: Enable FEAT_LSE2 for -cpu max 2023-06-06 10:19:39 +01:00
arch_dump.c dump: Replace opaque DumpState pointer with a typed one 2022-10-06 19:30:43 +04:00
arm-powerctl.c target/arm: Wrap arm_rebuild_hflags calls with tcg_enabled 2023-02-27 13:27:04 +00:00
arm-powerctl.h target/arm/arm-powerctl: Add new arm_set_cpu_on_and_reset() 2019-02-28 11:03:04 +00:00
arm-qmp-cmds.c target/arm: Restrict 'qapi-commands-machine.h' to system emulation 2023-03-02 07:51:06 +01:00
common-semi-target.h semihosting: Split out common-semi-target.h 2022-06-28 04:35:07 +05:30
cortex-regs.c target/arm: Saturate L2CTLR_EL1 core count field rather than overflowing 2023-05-18 11:39:33 +01:00
cpregs.h accel/tcg: Introduce translator_io_start 2023-06-05 12:04:29 -07:00
cpu-param.h target/arm: Remove NB_MMU_MODES define 2023-03-13 06:44:37 -07:00
cpu-qom.h target/arm: Convert to 3-phase reset 2022-12-16 15:58:15 +00:00
cpu.c target/arm: trap DCC access in user mode emulation 2023-06-06 10:19:40 +01:00
cpu.h target/arm: Add SCTLR.nAA to TBFLAG_A64 2023-06-06 10:19:38 +01:00
cpu64.c target/arm: Move 64-bit TCG CPUs into tcg/ 2023-05-02 10:21:32 +01:00
debug_helper.c target/arm: trap DCC access in user mode emulation 2023-06-06 10:19:40 +01:00
gdbstub.c target/arm: Report pauth information to gdb as 'pauth_v2' 2023-04-20 10:21:16 +01:00
gdbstub64.c target/arm: Correct AArch64.S2MinTxSZ 32-bit EL1 input size check 2023-05-12 16:01:25 +01:00
helper.c target/arm: allow DC CVA[D]P in user mode emulation 2023-06-06 10:19:40 +01:00
helper.h target/arm: Move helper-{a64,mve,sme,sve}.h to tcg/ 2023-05-12 15:43:37 +01:00
hvf_arm.h hvf: add guest debugging handlers for Apple Silicon hosts 2023-06-06 10:19:30 +01:00
hyp_gdbstub.c arm: move KVM breakpoints helpers 2023-06-06 10:19:29 +01:00
idau.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
internals.h target/arm: Check alignment in helper_mte_check 2023-06-06 10:19:38 +01:00
Kconfig target/arm: Explain why we need to select ARM_V7M 2023-05-30 15:50:17 +01:00
kvm-consts.h target/arm: Remove KVM AArch32 CPU definitions 2023-04-20 10:21:15 +01:00
kvm-stub.c target/arm: Avoid bare abort() or assert(0) 2022-05-05 09:35:51 +01:00
kvm.c Revert "arm/kvm: add support for MTE" 2023-05-19 08:01:15 -07:00
kvm64.c arm: move KVM breakpoints helpers 2023-06-06 10:19:29 +01:00
kvm_arm.h Revert "arm/kvm: add support for MTE" 2023-05-19 08:01:15 -07:00
machine.c target/arm: Wrap arm_rebuild_hflags calls with tcg_enabled 2023-02-27 13:27:04 +00:00
meson.build arm: move KVM breakpoints helpers 2023-06-06 10:19:29 +01:00
op_addsub.h
ptw.c tcg: Split out tcg/oversized-guest.h 2023-06-05 12:04:28 -07:00
syndrome.h target/arm: Implement the HFGITR_EL2.ERET trap 2023-02-03 12:59:24 +00:00
tcg-stubs.c target/arm: Move hflags code into the tcg directory 2023-02-27 13:27:04 +00:00
trace-events docs: fix references to docs/devel/tracing.rst 2021-06-02 06:51:09 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vfp_helper.c target/arm: Improve arm_rmode_to_sf 2023-03-13 06:44:38 -07:00