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Marc Zyngier 457934855b 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.

Backports commit 5bb0a20b74ad17dee5dae38e3b8b70b383ee7c2d from qemu
2020-01-07 18:07:21 -05:00
..
accel tcg: TCGMemOp is now accelerator independent MemOp 2019-11-28 03:01:12 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs target/riscv: Initial introduction of the RISC-V target 2019-03-08 21:46:10 -05:00
docs docs/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu fpu: rename softfloat-specialize.h -> .inc.c 2019-11-18 21:12:30 -05:00
hw i386: Update new x86_apicid parsing rules with die_offset support 2019-08-08 18:22:03 -04:00
include tcg: TCGMemOp is now accelerator independent MemOp 2019-11-28 03:01:12 -05:00
qapi qapi: Rewrite string-input-visitor's integer and list parsing 2018-12-18 04:57:25 -05:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom cpu: Move icount_decr to CPUNegativeOffsetState 2019-06-13 15:34:28 -04:00
scripts decodetree: Suppress redundant declaration warnings 2019-11-18 21:21:30 -05:00
target target/arm: Handle AArch32 CP15 trapping via HSTR_EL2 2020-01-07 18:07:21 -05:00
tcg tcg: TCGMemOp is now accelerator independent MemOp 2019-11-28 03:01:12 -05:00
util util/cacheinfo: Use uint64_t on LLP64 model to satisfy Windows ARM64 2019-05-09 17:43:27 -04:00
aarch64.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
aarch64eb.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
armeb.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
CODING_STYLE.rst docs: split the CODING_STYLE doc into distinct groups 2019-11-28 02:54:44 -05:00
configure configure: remove AUTOCONF_HOST 2019-11-18 22:19:47 -05:00
COPYING
COPYING.LIB
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c exec.c: add a check between constants to see whether we could skip 2019-11-28 02:55:42 -05:00
gen_all_header.sh
glib_compat.c target/arm/translate: Synchronize with Qemu 2019-04-27 10:13:01 -04:00
header_gen.py target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
Makefile Makefile: Rename targets for make recursion 2019-08-08 17:26:49 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target configure: Remove old -fno-gcse workaround for GCC 4.6.x and 4.7.[012] 2018-12-18 03:52:36 -05:00
memory.c memory: Delete memory region subregions 2019-11-28 03:03:11 -05:00
memory_ldst.inc.c exec: Fix MAP_RAM for cached access 2018-07-03 01:11:12 -04:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
mips64.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
mips64el.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
mipsel.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
powerpc.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
riscv32.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
riscv64.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
sparc64.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Open 5.0 development tree 2020-01-07 17:50:51 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h
x86_64.h target/arm: Handle trapping to EL2 of AArch32 VMRS instructions 2020-01-07 18:04:16 -05:00