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unicorn/qemu
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Peter Maydell a9d07a19c0
target/arm: Track the state of our irq lines from the GIC explicitly 
Currently we track the state of the four irq lines from the GIC
only via the cs->interrupt_request or KVM irq state. That means
that we assume that an interrupt is asserted if and only if the
external line is set. This assumption is incorrect for VIRQ
and VFIQ, because the HCR_EL2.{VI,VF} bits allow assertion
of VIRQ and VFIQ separately from the state of the external line.

To handle this, start tracking the state of the external lines
explicitly in a CPU state struct field, as is common practice
for devices.

The complicated part of this is dealing with inbound migration
from an older QEMU which didn't have this state. We assume in
that case that the older QEMU did not implement the HCR_EL2.{VI,VF}
bits as generating interrupts, and so the line state matches
the current state in cs->interrupt_request. (This is not quite
true between commit 8a0fc3a29fc2315325400c7 and its revert, but
that commit is broken and never made it into any released QEMU
version.)

Backports relevant parts of commit  ed89f078ff3d6684ce3e538e4777a3bb4ec3e2b1 from qemu
2018-11-16 21:47:59 -05:00
..
accel tcg: Support MMU protection regions smaller than TARGET_PAGE_SIZE 2018-11-16 21:35:54 -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/devel/memory.txt: Document _with_attrs accessors 2018-10-04 04:46:26 -04:00
fpu softfloat: Don't execute divdeu without power7 2018-11-11 08:33:46 -05:00
hw hw/mips/mips_r4k: Fix initialization of MIPS target CPUs 2018-09-03 17:40:08 -04:00
include tcg: Support MMU protection regions smaller than TARGET_PAGE_SIZE 2018-11-16 21:35:54 -05:00
qapi qobject: Modify qobject_ref() to return obj 2018-05-04 10:24:10 -04:00
qobject qstring: Move qstring_from_substr()'s @end one to the right 2018-08-02 21:24:19 -04:00
qom tcg: access cpu->icount_decr.u16.high with atomics 2018-10-23 14:36:46 -04:00
scripts decodetree: Allow multiple input files 2018-11-11 08:28:55 -05:00
target target/arm: Track the state of our irq lines from the GIC explicitly 2018-11-16 21:47:59 -05:00
tcg tcg/tcg-op.h: Add multiple include guard 2018-11-11 08:51:51 -05:00
util Haiku support patches (#989) 2018-09-03 07:55:51 -04:00
aarch64.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
aarch64eb.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
accel.c clean-up: removed duplicate #includes 2018-02-28 08:51:56 -05:00
arm.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
armeb.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
CODING_STYLE import 2015-08-21 15:04:50 +08:00
configure tcg: Split CONFIG_ATOMIC128 2018-10-23 15:17:39 -04:00
COPYING import 2015-08-21 15:04:50 +08:00
COPYING.LIB import 2015-08-21 15:04:50 +08:00
cpus.c Include qapi/error.h exactly where needed 2018-03-07 12:26:38 -05:00
exec.c Partial backport of: exec.c: Handle IOMMUs in address_space_translate_for_iotlb() 2018-11-16 21:24:55 -05:00
gen_all_header.sh arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
glib_compat.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
HACKING HACKING: document preference for g_new instead of g_malloc 2018-05-22 00:30:50 -04:00
header_gen.py memory: learn about non-volatile memory region 2018-11-11 08:50:39 -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: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
Makefile Revert "Makefile: Rename TARGET_DIRS to TARGET_LIST" 2018-07-05 17:40:24 -04:00
Makefile.objs qapi: Move qapi-schema.json to qapi/, rename generated files 2018-03-09 11:35:11 -05:00
Makefile.target tcg: remove softfloat from --disable-tcg builds 2018-06-07 11:49:35 -04:00
memory.c memory: learn about non-volatile memory region 2018-11-11 08:50:39 -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 memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
mips64.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
mips64el.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
mipsel.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
powerpc.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -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: Add v8M stack checks on ADD/SUB/MOV of SP 2018-10-08 14:15:15 -04:00
riscv64.h target/arm: Add v8M stack checks on ADD/SUB/MOV of SP 2018-10-08 14:15:15 -04:00
rules.mak build-sys: silence make by default or V=0 2018-03-06 08:58:03 -05:00
sparc.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
sparc64.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00
unicorn_common.h unicorn_common: Fix unicorn memory functions failing 2018-09-03 10:40:14 -04:00
VERSION Update version for v3.1.0-rc0 release 2018-11-11 08:40:14 -05:00
vl.c Use cpu_create(type) instead of cpu_init(cpu_model) 2018-03-20 14:20:30 -04:00
vl.h import 2015-08-21 15:04:50 +08:00
x86_64.h memory: learn about non-volatile memory region 2018-11-11 08:50:39 -05:00