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b242e0e0e2
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Paolo Bonzini b242e0e0e2 exec: skip MMIO regions correctly in cpu_physical_memory_write_rom_internal 
Loading the BIOS in the mac99 machine is interesting, because there is a
PROM in the middle of the BIOS region (from 16K to 32K).  Before memory
region accesses were clamped, when QEMU was asked to load a BIOS from
0xfff00000 to 0xffffffff it would put even those 16K from the BIOS file
into the region.  This is weird because those 16K were not actually
visible between 0xfff04000 and 0xfff07fff.  However, it worked.

After clamping was added, this also worked.  In this case, the
cpu_physical_memory_write_rom_internal function split the write in
three parts: the first 16K were copied, the PROM area (second 16K) were
ignored, then the rest was copied.

Problems then started with commit 965eb2f (exec: do not clamp accesses
to MMIO regions, 2015-06-17).  Clamping accesses is not done for MMIO
regions because they can overlap wildly, and MMIO registers can be
expected to perform full-width accesses based only on their address
(with no respect for adjacent registers that could decode to completely
different MemoryRegions).  However, this lack of clamping also applied
to the PROM area!  cpu_physical_memory_write_rom_internal thus failed
to copy the third range above, i.e. only copied the first 16K of the BIOS.

In effect, address_space_translate is expecting _something else_ to do
the clamping for MMIO regions if the incoming length is large.  This
"something else" is memory_access_size in the case of address_space_rw,
so use the same logic in cpu_physical_memory_write_rom_internal.

Reported-by: Alexander Graf <agraf@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Fixes: 965eb2f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-06 14:59:11 +02:00
audio qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
backends Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
block raw-posix: Introduce hdev_is_sg() 2015-06-23 15:08:52 +01:00
bsd-user target-i386: use memory API to implement SMRAM 2015-06-05 17:36:39 +02:00
default-configs virtio-gpu: pci support bits and virtio-vga. 2015-06-16 10:35:43 +01:00
disas target-mips: add MTHC0 and MFHC0 instructions 2015-06-12 09:05:31 +01:00
docs qapi: Drop bogus command from docs 2015-06-18 14:12:33 +02:00
dtc@65cc4d2748 dtc: Update dtc / libfdt submodule to version 1.4.0 2015-06-03 23:56:49 +02:00
fpu target-s390x: define default NaN values 2015-06-05 01:37:58 +02:00
fsdev virtfs-proxy-helper: fail gracefully if socket path is too long 2015-06-16 20:32:29 +05:30
gdb-xml gdb-xml: Include XML for s390 vector registers 2015-05-27 17:52:03 +02:00
hw acpi: mark PMTIMER as unlocked 2015-07-01 15:45:51 +02:00
include Stop including qemu-common.h in memory.h 2015-07-06 14:59:09 +02:00
libcacard libcacard: pkgconfig: tidy dependent libs 2015-06-23 19:57:28 +03:00
libdecnumber remove libdecnumber/dpd/decimal128Local.h 2015-06-23 19:57:27 +03:00
linux-headers virtio, pci fixes, enhancements 2015-06-19 11:30:57 +01:00
linux-user linux-user: ioctl() command type is int 2015-06-16 09:37:17 +03:00
migration Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
net net: simplify net_client_init1() 2015-06-24 16:33:42 +01:00
pc-bios Update OpenBIOS images 2015-06-17 20:02:15 +01:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po po: fix conflict with %.mo rule in rules.mak 2014-09-26 13:35:08 +02:00
qapi -----BEGIN PGP SIGNATURE----- 2015-06-25 11:19:46 +01:00
qga qerror: Clean up QERR_ macros to expand into a single string 2015-06-22 18:20:40 +02:00
qobject Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qom qerror: Clean up QERR_ macros to expand into a single string 2015-06-22 18:20:40 +02:00
roms Update OpenBIOS images 2015-06-17 20:02:15 +01:00
scripts Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
slirp qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
stubs main-loop: introduce qemu_mutex_iothread_locked 2015-07-01 15:45:50 +02:00
target-alpha disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-arm Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
target-cris disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-i386 kvm: First step to push iothread lock out of inner run loop 2015-07-01 15:45:51 +02:00
target-lm32 disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-m68k Monitor patches 2015-06-23 10:38:00 +01:00
target-microblaze disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-mips kvm: First step to push iothread lock out of inner run loop 2015-07-01 15:45:51 +02:00
target-moxie target-moxie: Fix warnings from Sparse (one-bit signed bitfield) 2015-03-19 11:11:55 +03:00
target-openrisc disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-ppc kvm: First step to push iothread lock out of inner run loop 2015-07-01 15:45:51 +02:00
target-s390x Stop including qemu-common.h in memory.h 2015-07-06 14:59:09 +02:00
target-sh4 disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-sparc disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-tricore disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-unicore32 disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
target-xtensa disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
tcg cpu-defs: Move CPU_TEMP_BUF_NLONGS to tcg 2015-06-26 16:00:50 +02:00
tests qemu-iotests: fix 051.out after qdev error message change 2015-06-24 15:23:20 +01:00
trace Remove superfluous '\n' around error_report() 2015-03-10 08:15:33 +03:00
ui Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
util cutils: allow compilation with icc 2015-06-26 16:00:50 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore gitignore: Ignore more .pod files. 2015-04-04 09:45:59 +03:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: Add "--enable-modules" 2015-01-26 12:27:05 +01:00
accel.c accel: Create accel object when initializing machine 2014-10-09 15:36:14 +02:00
aio-posix.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
aio-win32.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
arch_init.c migration: reduce include files 2015-06-12 06:42:34 +02:00
async.c Revert "iothread: release iothread around aio_poll" 2015-06-12 13:58:33 +01:00
balloon.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
block.c block: Use bdrv_is_sg() everywhere 2015-06-23 15:08:52 +01:00
blockdev-nbd.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
blockdev.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
blockjob.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
bootdevice.c misc: fix typos in copyright declaration 2015-03-26 14:21:43 +01:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: Section about conditional statement 2014-08-15 18:54:06 +04:00
configure configure: rearrange --help and consolidate enable/disable together 2015-06-23 20:23:33 +03:00
COPYING
COPYING.LIB
coroutine-gthread.c glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c coroutine-sigaltstack: Change jmp_buf to sigjmp_buf 2014-11-11 11:07:55 +03:00
coroutine-ucontext.c coroutine-ucontext: use __thread 2015-01-13 13:43:28 +00:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec.c include/exec: Move tb hash functions out 2015-06-26 16:00:51 +02:00
cpus.c main-loop: introduce qemu_mutex_iothread_locked 2015-07-01 15:45:50 +02:00
cputlb.c memory: replace cpu_physical_memory_reset_dirty() with test-and-clear 2015-06-05 17:10:00 +02:00
device_tree.c device-tree: Make a common-obj 2015-06-03 14:21:24 +03:00
device-hotplug.c pci-hotplug-old: Has been dead for five major releases, bury 2015-03-01 12:37:54 +01:00
disas.c disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
dma-helpers.c range: remove useless inclusions 2015-04-30 16:05:48 +03:00
dump.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
exec.c exec: skip MMIO regions correctly in cpu_physical_memory_write_rom_internal 2015-07-06 14:59:11 +02:00
gdbstub.c semihosting: create SemihostingConfig structure and semihost.h 2015-06-19 14:17:45 +01:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
hmp.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
hmp.h qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
iohandler.c iohandler: Change return type of qemu_set_fd_handler to "void" 2015-06-12 13:26:21 +01:00
ioport.c - miscellaneous cleanups for TCG (Emilio) and NBD (Bogdan) 2015-04-30 12:04:11 +01:00
iothread.c qom: Add helper function for getting user objects root 2015-06-19 18:40:00 +02:00
kvm-all.c kvm: Switch to unlocked MMIO 2015-07-01 15:45:51 +02:00
kvm-stub.c pc: kvm: check if KVM has free memory slots to avoid abort() 2014-11-23 12:11:29 +02:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
MAINTAINERS Add MAINTAINERS entry for virtio-input 2015-06-23 10:32:35 +02:00
Makefile Makefile: Add "make ctags" 2015-06-23 20:23:39 +03:00
Makefile.objs device-tree: Make a common-obj 2015-06-03 14:21:24 +03:00
Makefile.target migration: move savevm.c inside migration/ 2015-06-12 06:42:30 +02:00
memory_mapping.c memory_mapping: Rework cpu related includes 2015-06-26 16:00:50 +02:00
memory.c exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st* 2015-07-01 15:45:50 +02:00
module-common.c module: implement module loading 2014-02-20 13:14:18 +01:00
monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
nbd.c qemu-nbd: only send a limited number of errno codes on the wire 2015-05-08 14:45:11 +02:00
numa.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
os-posix.c rcu: do not create thread in pthread_atfork callback 2015-04-01 10:06:38 +02:00
os-win32.c pidfile: stop making pidfile error a special case 2014-11-02 10:04:34 +03:00
page_cache.c xbzrle: rebuild the cache_is_cached function 2015-01-15 17:49:43 +05:30
qapi-schema.json s390x/kvm/watchdog 2015-06-15 13:24:51 +01:00
qdev-monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-coroutine-io.c coroutine-io: Return -errno in case of error 2015-03-18 12:07:21 +01:00
qemu-coroutine-lock.c coroutine: remove unnecessary parentheses in qemu_co_queue_empty 2015-04-30 16:05:49 +03:00
qemu-coroutine-sleep.c coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
qemu-coroutine.c coroutine: Clean up qemu_coroutine_enter() 2015-03-09 11:11:59 +01:00
qemu-doc.texi raw-posix: Deprecate host floppy passthrough 2015-03-19 11:43:02 +01:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qemu-img.texi qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-io-cmds.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-io.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-log.c qemu-log: Correct help text of 'log cpu_reset' 2015-02-10 09:27:20 +03:00
qemu-nbd.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-nbd.texi nbd: Miscellaneous typo fixes. 2014-05-24 00:07:29 +04:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx qemu-options: Use @itemx where appropriate 2015-06-23 20:23:39 +03:00
qemu-seccomp.c seccomp: add mlockall to whitelist 2015-01-23 14:07:08 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c qemu-timer: Call clock reset notifiers on forward jumps 2015-06-19 12:27:14 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qjson.c QJSON: Use OBJECT_CHECK 2015-05-11 08:59:07 -04:00
qmp-commands.hx Grammar: 'as to'->'as for' 2015-06-23 19:57:27 +03:00
qmp.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
qtest.c qtest: pre-buffer hex nibs 2015-05-22 15:58:22 -04:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak rules.mak: Force CFLAGS for all objects in DSO 2015-05-08 14:45:11 +02:00
softmmu_template.h softmmu: Add probe_write() 2015-06-11 10:13:28 +01:00
spice-qemu-char.c spice: fix spice_chr_add_watch() pre-condition 2015-05-29 09:56:01 +02:00
tcg-runtime.c tcg: Push tcg-runtime routines into exec/helper-* 2014-05-28 09:33:54 -07:00
tci.c tcg: Mask TCGMemOp appropriately for indexing 2015-06-09 06:35:29 -07:00
thread-pool.c thread-pool: clean up thread_pool_completion_bh() 2015-04-28 15:36:09 +02:00
thunk.c linux-user: Allocate thunk size dynamically 2015-06-15 11:36:58 +03:00
tpm.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
trace-events ossaudio: use trace events instead of debug config flag 2015-06-15 12:42:48 +02:00
translate-all.c include/exec: Move tb hash functions out 2015-06-26 16:00:51 +02:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
user-exec.c exec: move functions to translate-all.h 2015-06-05 17:09:59 +02:00
VERSION Open 2.4 development tree 2015-04-25 22:05:07 +01:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
xen-common-stub.c accel: Move Xen registration code to xen-common.c 2014-10-04 08:59:15 +02:00
xen-common.c accel: Pass MachineState object to accel init functions 2014-10-09 12:57:10 +02:00
xen-hvm-stub.c xen: Remove xen_cmos_set_s3_resume() 2015-03-10 08:15:33 +03:00
xen-hvm.c xen-220615, more SOB lines 2015-06-23 17:46:20 +01:00
xen-mapcache.c xen: add a lock for the mapcache 2015-01-20 14:24:17 +00:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team