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unicorn/qemu
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Peter Maydell 6614ba9615
arm: Clean up handling of no-MPU PMSA CPUs 
ARM CPUs come in two flavours:
* proper MMU ("VMSA")
* only an MPU ("PMSA")
For PMSA, the MPU may be implemented, or not (in which case there
is default "always acts the same" behaviour, but it isn't guest
programmable).

QEMU is a bit confused about how we indicate this: we have an
ARM_FEATURE_MPU, but it's not clear whether this indicates
"PMSA, not VMSA" or "PMSA and MPU present" , and sometimes we
use it for one purpose and sometimes the other.

Currently trying to implement a PMSA-without-MPU core won't
work correctly because we turn off the ARM_FEATURE_MPU bit
and then a lot of things which should still exist get
turned off too.

As the first step in cleaning this up, rename the feature
bit to ARM_FEATURE_PMSA, which indicates a PMSA CPU (with
or without MPU).

Backports commit 452a095526a0537f16c271516a2200877a272ea8 from qemu
2018-03-02 19:05:31 -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: Use correct type in float64_to_uint64_round_to_zero() 2018-03-02 10:44:10 -05:00
hw i386: Remove AMD feature flag aliases from Opteron models 2018-03-01 23:49:04 -05:00
include memory: tune last param of iommu_ops.translate() 2018-03-02 18:59:12 -05:00
qapi qapi: Fix object input visit beyond end of list 2018-03-02 12:22:50 -05:00
qobject util/cutils: Rename qemu_strtoll(), qemu_strtoull() 2018-03-02 08:39:45 -05:00
qom qapi: Drop unused non-strict qobject input visitor 2018-03-02 12:14:52 -05:00
scripts qapi: rename QmpOutputVisitor to QObjectOutputVisitor 2018-02-27 08:05:33 -05:00
target arm: Clean up handling of no-MPU PMSA CPUs 2018-03-02 19:05:31 -05:00
tcg tcg/mips: fix field extraction opcode 2018-03-02 18:59:12 -05:00
util bitmap: add bitmap_copy_and_clear_atomic 2018-03-02 18:59:11 -05:00
aarch64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
aarch64eb.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
armeb.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -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 configure: remove Cygwin 2018-03-02 14:17:41 -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 cpu-exec: remove unnecessary check of cpu->exit_request 2018-03-02 11:21:35 -05:00
cpus.c tcg: handle EXCP_ATOMIC exception for system emulation 2018-03-02 09:56:43 -05:00
cputlb.c cputlb: handle first atomic write to the page 2018-03-02 18:59:12 -05:00
exec.c memory: tune last param of iommu_ops.translate() 2018-03-02 18:59:12 -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 RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -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 RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -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 Move target-* CPU file into a target/ folder 2018-03-01 22:50:58 -05:00
memory.c memory: Introduce DEVICE_HOST_ENDIAN for ram device 2018-03-02 11:24:32 -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 RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mips64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mips64el.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
mipsel.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
powerpc.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
qapi-schema.json qapi: add missing colon-ending for section name 2018-03-01 09:07:10 -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: Remove includes from softmmu_template.h 2018-02-27 12:40:43 -05:00
sparc.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
sparc64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00
tcg-runtime.c tcg: Add opcode for ctpop 2018-03-01 18:26:41 -05:00
translate-all.c translate-all: exit cpu_restore_state early if translating 2018-03-02 12:46:16 -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 tcg: add options for enabling MTTCG 2018-03-02 09:25:01 -05:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h RAMBlocks: qemu_ram_is_shared 2018-03-02 13:05:35 -05:00