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unicorn/qemu
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Daniel P. Berrange abf3c71af2
i386: expose TCGTCGTCGTCG in the 0x40000000 CPUID leaf 
Currently when running KVM, we expose "KVMKVMKVM\0\0\0" in
the 0x40000000 CPUID leaf. Other hypervisors (VMWare,
HyperV, Xen, BHyve) all do the same thing, which leaves
TCG as the odd one out.

The CPUID signature is used by software to detect which
virtual environment they are running in and (potentially)
change behaviour in certain ways. For example, systemd
supports a ConditionVirtualization= setting in unit files.
The virt-what command can also report the virt type it is
running on

Currently both these apps have to resort to custom hacks
like looking for 'fw-cfg' entry in the /proc/device-tree
file to identify TCG.

This change thus proposes a signature "TCGTCGTCGTCG" to be
reported when running under TCG.

To hide this, the -cpu option tcg-cpuid=off can be used.

Backports commits 4ed3d478c63dc65a02eba774c35116618ea5ff10 and  1ce36bfe6424243082d3d7c2330e1a0a4ff72a43 from qemu
2018-03-03 22:56:32 -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 include/exec/exec-all: document common exit conditions 2018-03-03 22:31:28 -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 qom: Fix ambiguous path detection when ambiguous=NULL 2018-03-03 22:49:21 -05:00
scripts scripts: use build_ prefix for string not piped through cgen() 2018-03-03 22:11:28 -05:00
target i386: expose TCGTCGTCGTCG in the 0x40000000 CPUID leaf 2018-03-03 22:56:32 -05:00
tcg tcg/mips: Bugfix for crash when running program with qemu-i386. 2018-03-03 22:06:26 -05:00
util util/cacheinfo: Fix warning generated by clang 2018-03-03 22:04:12 -05:00
aarch64.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
aarch64eb.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
armeb.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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 tcg: consistently access cpu->tb_jmp_cache atomically 2018-03-03 21:12:36 -05:00
exec.c Revert "exec.c: Fix breakpoint invalidation race" 2018-03-03 22:14:35 -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 memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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 memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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 the CONFIG_TCG into Makefiles 2018-03-03 21:39:30 -05:00
memory.c memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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 memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
mips64.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
mips64el.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
mipsel.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
powerpc.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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: Remove includes from softmmu_template.h 2018-02-27 12:40:43 -05:00
sparc.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00
sparc64.h memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -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/aarch64: Use ADRP+ADD to compute target address 2018-03-03 22:01:38 -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 memory: Rename memory_region_init_rom() and _rom_device() to _nomigrate() 2018-03-03 22:29:01 -05:00