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5bb0a20b74
qemu/target/arm
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Marc Zyngier 5bb0a20b74 target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 
HSTR_EL2 offers a way to trap ranges of CP15 system register
accesses to EL2, and it looks like this register is completely
ignored by QEMU.

To avoid adding extra .accessfn filters all over the place (which
would have a direct performance impact), let's add a new TB flag
that gets set whenever HSTR_EL2 is non-zero and that QEMU translates
a context where this trap has a chance to apply, and only generate
the extra access check if the hypervisor is actively using this feature.

Tested with a hand-crafted KVM guest accessing CBAR.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191201122018.25808-5-maz@kernel.org
[PMM: use is_a64(); fix comment syntax]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-12-16 10:46:35 +00:00
..
a32-uncond.decode target/arm: Convert Unallocated memory hint 2019-09-05 13:23:03 +01:00
a32.decode target/arm: Convert SVC 2019-09-05 13:23:03 +01:00
arch_dump.c target/arm: Add aa{32, 64}_vfp_{dreg, qreg} helpers 2018-01-25 11:45:29 +00:00
arm_ldst.h target/arm: fetch code with translator_ld 2019-10-28 15:12:38 +00:00
arm-powerctl.c target/arm/arm-powerctl: Add new arm_set_cpu_on_and_reset() 2019-02-28 11:03:04 +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-semi.c target/arm/arm-semi: Implement SH_EXT_STDOUT_STDERR extension 2019-10-15 18:09:04 +01:00
cpu64.c target/arm: Merge arm_cpu_vq_map_next_smaller into sole caller 2019-11-19 13:20:27 +00:00
cpu-param.h tcg: Split out target/arch/cpu-param.h 2019-06-10 07:03:34 -07:00
cpu-qom.h hw/core: Move cpu.c, cpu.h from qom/ to hw/core/ 2019-08-21 13:24:01 +02:00
cpu.c target/arm: Add support for cortex-m7 CPU 2019-12-16 10:46:34 +00:00
cpu.h target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2019-12-16 10:46:35 +00:00
crypto_helper.c target: Do not include "exec/exec-all.h" if it is not necessary 2018-06-01 14:15:10 +02:00
debug_helper.c target/arm: Move debug routines to debug_helper.c 2019-07-04 17:14:43 +01:00
gdbstub64.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
gdbstub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
helper-a64.c target/arm: Rebuild hflags at EL changes 2019-10-24 17:16:28 +01:00
helper-a64.h target/arm: Split helper_msr_i_pstate into 3 2019-03-05 15:55:08 +00:00
helper-sve.h target/arm: Rewrite vector gather first-fault loads 2018-10-08 14:55:03 +01:00
helper.c target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2019-12-16 10:46:35 +00:00
helper.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2019-12-16 10:46:34 +00:00
idau.h qom: make interface types abstract 2018-12-11 15:45:22 -02:00
internals.h target/arm: Split out arm_mmu_idx_el 2019-10-24 17:16:28 +01:00
iwmmxt_helper.c target/arm: Untabify iwmmxt_helper.c 2018-08-24 13:17:48 +01:00
kvm32.c target/arm/kvm: scratch vcpu: Preserve input kvm_vcpu_init features 2019-11-01 20:40:59 +00:00
kvm64.c target/arm/kvm: host cpu: Add support for sve<N> properties 2019-11-01 20:40:59 +00:00
kvm_arm.h target/arm/cpu64: max cpu: Support sve properties with KVM 2019-11-01 20:40:59 +00:00
kvm-consts.h arm: add trailing ; after MISMATCH_CHECK 2017-02-01 03:37:18 +02:00
kvm-stub.c Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
kvm.c target/arm/kvm: scratch vcpu: Preserve input kvm_vcpu_init features 2019-11-01 20:40:59 +00:00
m_helper.c target/arm: Fix handling of cortex-m FTYPE flag in EXCRET 2019-11-26 13:55:36 +00:00
machine.c target/arm: Rebuild hflags at EL changes 2019-10-24 17:16:28 +01:00
Makefile.objs target/arm: Add skeleton for T16 decodetree 2019-09-05 13:23:03 +01:00
monitor.c target/arm/cpu64: max cpu: Introduce sve<N> properties 2019-11-01 20:40:59 +00:00
neon_helper.c target/arm: Use tcg_gen_abs_i64 and tcg_gen_gvec_abs 2019-05-13 22:52:08 +00:00
op_addsub.h
op_helper.c target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2019-12-16 10:46:35 +00:00
pauth_helper.c target/arm: Fix output of PAuth Auth 2019-06-13 15:14:03 +01:00
psci.c sysemu: Split sysemu/runstate.h off sysemu/sysemu.h 2019-08-16 13:37:36 +02:00
sve_helper.c tcg: Introduce set/clear_helper_retaddr 2019-07-14 12:19:00 +02:00
sve.decode target/arm: SVE brk[ab] merging does not have s bit 2019-01-07 15:23:45 +00:00
t16.decode target/arm: Convert T16, long branches 2019-09-05 13:23:04 +01:00
t32.decode target/arm: Convert TT 2019-09-05 13:23:03 +01:00
tlb_helper.c target/arm: Move TLB related routines to tlb_helper.c 2019-07-01 17:29:01 +01:00
trace-events trace-events: Shorten file names in comments 2019-03-22 16:18:07 +00:00
translate-a64.c target/arm: Rebuild hflags at MSR writes 2019-10-24 17:16:28 +01:00
translate-a64.h Allow page table bit to swap endianness. 2019-09-04 16:29:18 +01:00
translate-sve.c tcg: TCGMemOp is now accelerator independent MemOp 2019-09-03 08:30:38 -07:00
translate-vfp.inc.c target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2019-12-16 10:46:34 +00:00
translate.c target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2019-12-16 10:46:35 +00:00
translate.h target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2019-12-16 10:46:35 +00:00
vec_helper.c target/arm: Add helpers for FMLAL 2019-02-28 11:03:05 +00:00
vfp_helper.c target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2019-12-16 10:46:34 +00:00
vfp-uncond.decode target/arm: Convert VCVTA/VCVTN/VCVTP/VCVTM to decodetree 2019-06-13 15:14:04 +01:00
vfp.decode target/arm: Use vfp_expand_imm() for AArch32 VFP VMOV_imm 2019-06-17 15:14:19 +01:00