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unicorn/qemu
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Peter Maydell 2070ef1c37
boards.h: Define new flag ignore_memory_transaction_failures 
Define a new MachineClass field ignore_memory_transaction_failures.
If this is flag is true then the CPU will ignore memory transaction
failures which should cause the CPU to take an exception due to an
access to an unassigned physical address; the transaction will
instead return zero (for a read) or be ignored (for a write). This
should be set only by legacy board models which rely on the old
RAZ/WI behaviour for handling devices that QEMU does not yet model.
New board models should instead use "unimplemented-device" for all
memory ranges where the guest will attempt to probe for a device that
QEMU doesn't implement and a stub device is required.

We need this for ARM boards, where we're about to implement support for
generating external aborts on memory transaction failures. Too many
of our legacy board models rely on the RAZ/WI behaviour and we
would break currently working guests when their "probe for device"
code provoked an external abort rather than a RAZ.

Backports commit ed860129acd3fcd0b1e47884e810212aaca4d21b from qemu
2018-03-04 21:27:15 -05:00
..
accel target/arm: [tcg] Port to generic translation framework 2018-03-04 20:28:06 -05:00
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
docs docs: clarify memory region lifecycle 2018-02-12 15:11:21 -05:00
fpu softfloat: define floatx80_round() 2018-03-03 20:57:27 -05:00
hw i386: Remove AMD feature flag aliases from Opteron models 2018-03-01 23:49:04 -05:00
include boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
qapi qapi: add explicit null to string input and output visitors 2018-03-03 20:32:50 -05:00
qobject qnum: add uint type 2018-03-03 18:37:56 -05:00
qom boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
scripts scripts: use build_ prefix for string not piped through cgen() 2018-03-03 22:11:28 -05:00
target boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
tcg tcg/s390: Use slbgr for setcond le and leu 2018-03-04 13:48:42 -05:00
util util/cacheinfo: Add missing include for ppc linux 2018-03-03 23:05:44 -05:00
aarch64.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
aarch64eb.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
armeb.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
atomic_template.h tcg: Add atomic128 helpers 2018-02-27 21:43:48 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure build: add -Wexpansion-to-defined 2018-03-03 22:12:31 -05:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpu-exec-common.c tcg: Add EXCP_ATOMIC 2018-02-27 11:57:58 -05:00
cpu-exec.c tcg: Introduce goto_ptr opcode and tcg_gen_lookup_and_goto_ptr 2018-03-02 21:05:18 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
exec.c memory: Open code FlatView rendering 2018-03-04 02:06:48 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c qapi: Improve qobject input visitor error reporting 2018-03-02 12:05:53 -05:00
HACKING import 2015-08-21 15:04:50 +08:00
header_gen.py boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE import 2015-08-21 15:04:50 +08:00
m68k.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
Makefile Makefile: Add a FORCE target 2018-02-24 17:03:51 -05:00
Makefile.objs tcg: Add atomic helpers 2018-02-27 15:57:47 -05:00
Makefile.target tcg: Add generic translation framework 2018-03-04 14:31:16 -05:00
memory.c memory: Move FlatView allocation to a helper 2018-03-04 02:08:37 -05:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2018-03-01 09:59:34 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
mips.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
mips64.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
mips64el.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
mipsel.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
powerpc.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
qapi-schema.json qapi: Update scripts to commit 01b2ffcedd94ad7b42bc870e4c6936c87ad03429 2018-03-03 18:32:12 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
rules.mak rules.mak: Don't extract libs from .mo-libs in link command 2018-02-26 02:08:03 -05:00
softmmu_template.h cputlb: Support generating CPU exceptions on memory transaction failures 2018-03-04 13:14:50 -05:00
sparc.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
sparc64.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00
tcg-runtime.c tcg: Increase hit rate of lookup_tb_ptr 2018-03-03 17:16:23 -05:00
translate-all.c tcg: Pass generic CPUState to gen_intermediate_code() 2018-03-03 23:34:18 -05:00
translate-all.h translate-all.c: Compute L1 page table properties at runtime 2018-02-26 11:46:58 -05:00
translate-common.c exec: Clean up includes 2018-02-19 00:49:55 -05:00
unicorn_common.h qom/cpu: Add MemoryRegion property 2018-02-18 21:54:50 -05:00
VERSION import 2015-08-21 15:04:50 +08:00
vl.c util: add cacheinfo 2018-03-03 16:58:28 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h boards.h: Define new flag ignore_memory_transaction_failures 2018-03-04 21:27:15 -05:00