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unicorn/qemu
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Marc Zyngier 145d58c367
target/arm: Honor HCR_EL2.TID3 trapping requirements 
HCR_EL2.TID3 mandates that access from EL1 to a long list of id
registers traps to EL2, and QEMU has so far ignored this requirement.

This breaks (among other things) KVM guests that have PtrAuth enabled,
while the hypervisor doesn't want to expose the feature to its guest.
To achieve this, KVM traps the ID registers (ID_AA64ISAR1_EL1 in this
case), and masks out the unsupported feature.

QEMU not honoring the trap request means that the guest observes
that the feature is present in the HW, starts using it, and dies
a horrible death when KVM injects an UNDEF, because the feature
*really* isn't supported.

Do the right thing by trapping to EL2 if HCR_EL2.TID3 is set.

Note that this change does not include trapping of the MVFR
registers from AArch32 (they are accessed via the VMRS
instruction and need to be handled in a different way).

Backports commit 6a4ef4e5d1084ce41fafa7d470a644b0fd3d9317 from qemu
2019-11-28 03:46:32 -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: Honor HCR_EL2.TID3 trapping requirements 2019-11-28 03:46:32 -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: Remove helper_double_saturate 2019-11-18 20:13:21 -05:00
aarch64eb.h target/arm: Remove helper_double_saturate 2019-11-18 20:13:21 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h Revert "target/arm: Use unallocated_encoding for aarch32" 2019-11-18 23:49:47 -05:00
armeb.h Revert "target/arm: Use unallocated_encoding for aarch32" 2019-11-18 23:49:47 -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/sparc: Switch to do_transaction_failed() hook 2019-11-28 02:56:50 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h target/arm: Remove helper_double_saturate 2019-11-18 20:13:21 -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/mips: Switch to do_transaction_failed() hook 2019-11-28 02:54:53 -05:00
mips64.h target/mips: Switch to do_transaction_failed() hook 2019-11-28 02:54:53 -05:00
mips64el.h target/mips: Switch to do_transaction_failed() hook 2019-11-28 02:54:53 -05:00
mipsel.h target/mips: Switch to do_transaction_failed() hook 2019-11-28 02:54:53 -05:00
powerpc.h target/arm: Remove helper_double_saturate 2019-11-18 20:13:21 -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: Remove helper_double_saturate 2019-11-18 20:13:21 -05:00
riscv64.h target/arm: Remove helper_double_saturate 2019-11-18 20:13:21 -05:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h target/sparc: Switch to do_transaction_failed() hook 2019-11-28 02:56:50 -05:00
sparc64.h target/sparc: Switch to do_transaction_failed() hook 2019-11-28 02:56:50 -05:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Open 4.2 development tree 2019-11-18 16:42:51 -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: Remove helper_double_saturate 2019-11-18 20:13:21 -05:00