OpenE2K/qemu-e2k
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369d6dc4de
qemu-e2k/include/qemu
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Stefan Hajnoczi 369d6dc4de memory: add readonly support to memory_region_init_ram_from_file() 
There is currently no way to open(O_RDONLY) and mmap(PROT_READ) when
creating a memory region from a file. This functionality is needed since
the underlying host file may not allow writing.

Add a bool readonly argument to memory_region_init_ram_from_file() and
the APIs it calls.

Extend memory_region_init_ram_from_file() rather than introducing a
memory_region_init_rom_from_file() API so that callers can easily make a
choice between read/write and read-only at runtime without calling
different APIs.

No new RAMBlock flag is introduced for read-only because it's unclear
whether RAMBlocks need to know that they are read-only. Pass a bool
readonly argument instead.

Both of these design decisions can be changed in the future. It just
seemed like the simplest approach to me.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20210104171320.575838-2-stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2021-02-01 17:07:34 -05:00
..
atomic128.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
atomic.h qemu/atomic: Drop special case for unsupported compiler 2020-12-15 12:52:07 -05:00
base64.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
bcd.h
bitmap.h bitmap: Add bitmap_copy_with_{src|dst}_offset() 2019-07-15 15:39:02 +02:00
bitops.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
bswap.h qemu/bswap: Remove unused qemu_bswap_len() 2020-11-17 09:45:24 +01:00
buffer.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
cacheflush.h util: Enhance flush_icache_range with separate data pointer 2021-01-07 05:09:41 -10:00
co-shared-resource.h util: introduce SharedResource 2019-10-28 11:22:31 +01:00
compiler.h qemu/compiler: Split out qemu_build_not_reached_always 2021-01-22 12:48:01 -10:00
config-file.h config-file: move -set implementation to vl.c 2020-12-10 12:15:19 -05:00
coroutine_int.h coroutine: support SafeStack in ucontext backend 2020-06-23 15:46:05 +01:00
coroutine.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
cpuid.h util: add util function buffer_zero_avx512() 2020-03-16 23:02:21 +01:00
crc32c.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
crc-ccitt.h util: Add CRC16 (CCITT) calculation routines 2021-01-24 20:10:54 +01:00
ctype.h qemu-common: Move qemu_isalnum() etc. to qemu/ctype.h 2019-06-11 20:22:09 +02:00
cutils.h cutils: replace strdup with g_strdup 2020-11-03 09:42:52 -05:00
datadir.h vl: extract softmmu/datadir.c 2020-12-10 12:15:18 -05:00
dbus.h util: add dbus helper unit 2020-01-06 18:41:32 +04:00
drm.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
envlist.h
error-report.h util/qemu-error: prepend guest name to error message to identify affected VM owner 2020-07-10 18:02:15 -04:00
event_notifier.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
fifo8.h Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
fifo32.h
filemonitor.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
futex.h futex: add missing header guards 2017-10-16 20:57:13 +03:00
guest-random.h util: Add qemu_guest_getrandom and associated routines 2019-05-22 12:38:54 -04:00
hbitmap.h block/dirty-bitmap: improve _next_dirty_area API 2020-03-18 14:03:46 -04:00
help_option.h keyval: Parse help options 2020-10-15 16:06:27 +02:00
host-utils.h fix the prototype of muls64/mulu64 2020-07-06 18:13:13 +02:00
id.h chardev: generate an internal id when none given 2020-01-07 16:50:09 +04:00
int128.h qemu/int128: Add int128_lshift 2020-08-28 10:02:47 +01:00
iov.h util/iov: add iov_discard_undo() 2020-09-23 13:41:58 +01:00
iova-tree.h util: remove redundant include of glib.h and add osdep.h 2018-06-29 12:22:28 +01:00
jhash.h Clean up ill-advised or unusual header guards 2019-05-13 08:58:55 +02:00
job.h job: refactor progress to separate object 2020-03-11 12:42:30 +01:00
lockable.h lockable: fix __COUNTER__ macro to be referenced properly 2020-05-04 16:07:43 +01:00
log-for-trace.h log-for-trace.h: Split out parts of log.h used by trace.h 2018-03-12 11:10:20 +00:00
log.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
main-loop.h main-loop: Fix comment 2020-09-01 12:07:52 +02:00
memfd.h linux-user: add memfd_create 2019-09-11 08:46:17 +02:00
mmap-alloc.h memory: add readonly support to memory_region_init_ram_from_file() 2021-02-01 17:07:34 -05:00
module.h module: silence errors for module_load_qom_all(). 2020-10-15 10:43:48 +02:00
notify.h xen / notify: introduce a new XenWatchList abstraction 2019-09-24 12:18:47 +01:00
nvdimm-utils.h Clean up includes 2020-12-10 17:16:44 +01:00
option_int.h qemu/queue.h: simplify reverse access to QTAILQ 2019-01-11 15:46:55 +01:00
option.h qemu-option: restrict qemu_opts_set to merge-lists QemuOpts 2020-12-10 12:15:12 -05:00
osdep.h osdep: build with non-working system() function 2021-01-29 10:47:28 +00:00
path.h
plugin-memory.h plugins: implement helpers for resolving hwaddr 2019-10-28 15:12:38 +00:00
plugin.h plugin: propagate errors 2020-12-15 12:51:56 -05:00
pmem.h Clean up decorations and whitespace around header guards 2019-05-13 08:58:55 +02:00
processor.h Drop remaining bits of ia64 host support 2018-02-05 18:09:45 +01:00
progress_meter.h job: refactor progress to separate object 2020-03-11 12:42:30 +01:00
qdist.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qemu-plugin.h qemu-plugin.h: remove GCC < 4 2020-12-15 12:52:09 -05:00
qemu-print.h qemu-print: New qemu_fprintf(), qemu_vfprintf() 2019-04-18 22:18:59 +02:00
qht.h qht: constify qht_statistics_init 2018-09-26 08:55:54 -07:00
qsp.h qsp: Simplify how qsp_report() prints 2019-04-18 22:18:59 +02:00
queue.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
range.h Include qemu/queue.h slightly less 2019-08-16 13:31:52 +02:00
ratelimit.h include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
rcu_queue.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
rcu.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
readline.h readline: add a free function 2018-01-16 14:54:50 +01:00
selfmap.h linux-user: factor out reading of /proc/self/maps 2020-04-07 16:19:49 +01:00
seqlock.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
sockets.h net: check if the file descriptor is valid before using it 2020-07-15 21:00:13 +08:00
stats64.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
sys_membarrier.h Normalize header guard symbol definition. 2019-05-13 08:58:55 +02:00
systemd.h Normalize header guard symbol definition. 2019-05-13 08:58:55 +02:00
thread-posix.h qsp: QEMU's Synchronization Profiler 2018-08-23 18:46:25 +02:00
thread-win32.h include: Make headers more self-contained 2019-08-16 13:31:51 +02:00
thread.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
throttle-options.h block: add throttle block filter driver 2017-09-06 10:12:02 +02:00
throttle.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
timed-average.h
timer.h semihosting: Implement SYS_ELAPSED and SYS_TICKFREQ 2021-01-18 10:05:06 +00:00
tsan.h include/qemu: Added tsan.h for annotations. 2020-06-16 14:49:05 +01:00
typedefs.h ptimer: Add new ptimer_set_period_from_clock() function 2021-01-29 15:54:42 +00:00
unicode.h json: Reject invalid UTF-8 sequences 2018-08-24 20:26:37 +02:00
units.h block: Eliminate the S_1KiB, S_2KiB, ... macros 2019-02-01 13:46:45 +01:00
uri.h
uuid.h acpi: nvdimm: change NVDIMM_UUID_LE to a common macro 2020-05-14 15:03:08 +01:00
vfio-helpers.h util/vfio-helpers: Pass page protections to qemu_vfio_pci_map_bar() 2020-10-05 09:35:52 +01:00
vhost-user-server.h libvhost-user: make it a meson subproject 2020-12-08 13:48:58 -05:00
win_dump_defs.h dump: move Windows dump structures definitions 2018-10-02 19:09:12 +02:00
xattr.h
xxhash.h target/arm: Implement an IMPDEF pauth algorithm 2021-01-19 14:38:51 +00:00
yank.h Introduce yank feature 2021-01-13 10:21:17 +01:00