Various testing and logging updates
- test tci with Travis
- enable multiarch testing in Travis
- default to out-of-tree builds
- make changing logfile safe via RCU
- remove redundant tests
- remove gtester test from docker
- convert DEBUG_MMAP to tracepoints
- remove hand rolled glob function
- trigger tcg re-configure when needed
# gpg: Signature made Thu 19 Dec 2019 08:24:08 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tesing-and-misc-191219-1: (25 commits)
tests/tcg: ensure we re-configure if configure.sh is updated
trace: replace hand-crafted pattern_glob with g_pattern_match_simple
linux-user: convert target_munmap debug to a tracepoint
linux-user: log page table changes under -d page
linux-user: add target_mmap_complete tracepoint
linux-user: convert target_mmap debug to tracepoint
linux-user: convert target_mprotect debug to tracepoint
travis.yml: Remove the redundant clang-with-MAIN_SOFTMMU_TARGETS entry
docker: gtester is no longer used
Added tests for close and change of logfile.
Add use of RCU for qemu_logfile.
qemu_log_lock/unlock now preserves the qemu_logfile handle.
Add a mutex to guarantee single writer to qemu_logfile handle.
Cleaned up flow of code in qemu_set_log(), to simplify and clarify.
Fix double free issue in qemu_set_log_filename().
ci: build out-of-tree
travis.yml: Enable builds on arm64, ppc64le and s390x
tests/test-util-filemonitor: Skip test on non-x86 Travis containers
tests/hd-geo-test: Skip test when images can not be created
iotests: Skip test 079 if it is not possible to create large files
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The CPU_LOG_PAGE flag is woefully underused and could stand to do
extra duty tracking page changes. If the user doesn't want to see the
details as things change they still have the tracepoints available.
We push the locking into log_page_dump and pass a reason for the
banner text.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191205122518.10010-5-alex.bennee@linaro.org>
This now allows changing the logfile while logging is active,
and also solves the issue of a seg fault while changing the logfile.
Any read access to the qemu_logfile handle will use
the rcu_read_lock()/unlock() around the use of the handle.
To fetch the handle we will use atomic_rcu_read().
We also in many cases do a check for validity of the
logfile handle before using it to deal with the case where the
file is closed and set to NULL.
The cases where we write to the qemu_logfile will use atomic_rcu_set().
Writers will also use call_rcu() with a newly added qemu_logfile_free
function for freeing/closing when readers have finished.
Signed-off-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191118211528.3221-6-robert.foley@linaro.org>
TCG Plugins initial implementation
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
travis.yml: enable linux-gcc-debug-tcg cache
MAINTAINERS: add me for the TCG plugins code
scripts/checkpatch.pl: don't complain about (foo, /* empty */)
.travis.yml: add --enable-plugins tests
include/exec: wrap cpu_ldst.h in CONFIG_TCG
accel/stubs: reduce headers from tcg-stub
tests/plugin: add hotpages to analyse memory access patterns
tests/plugin: add instruction execution breakdown
tests/plugin: add a hotblocks plugin
tests/tcg: enable plugin testing
tests/tcg: drop test-i386-fprem from TESTS when not SLOW
tests/tcg: move "virtual" tests to EXTRA_TESTS
tests/tcg: set QEMU_OPTS for all cris runs
tests/tcg/Makefile.target: fix path to config-host.mak
tests/plugin: add sample plugins
linux-user: support -plugin option
vl: support -plugin option
plugin: add qemu_plugin_outs helper
plugin: add qemu_plugin_insn_disas helper
plugin: expand the plugin_init function to include an info block
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Improvements for TARGET_PAGE_BITS_VARY
Fix for TCI ld16u_i64.
Fix for segv on icount execute from i/o memory.
Two misc cleanups.
# gpg: Signature made Mon 28 Oct 2019 14:55:08 GMT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* remotes/rth/tags/pull-tcg-20191028:
translate-all: Remove tb_alloc
translate-all: fix uninitialized tb->orig_tb
cputlb: Fix tlb_vaddr_to_host
exec: Cache TARGET_PAGE_MASK for TARGET_PAGE_BITS_VARY
exec: Promote TARGET_PAGE_MASK to target_long
exec: Restrict TARGET_PAGE_BITS_VARY assert to CONFIG_DEBUG_TCG
exec: Use const alias for TARGET_PAGE_BITS_VARY
configure: Detect compiler support for __attribute__((alias))
exec: Split out variable page size support to exec-vary.c
cpu: use ROUND_UP() to define xxx_PAGE_ALIGN
cputlb: ensure _cmmu helper functions follow the naming standard
tci: Add implementation for INDEX_op_ld16u_i64
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We don't bother with replicating the fast path (tlb_hit) of the old
cpu_ldst helpers as it has no measurable effect on performance. This
probably indicates we should consider flattening the whole set of
helpers but that is out of scope for this change.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: directly plumb into softmmu/user helpers]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We document this in docs/devel/load-stores.rst so lets follow it. The
32 bit and 64 bit access functions have historically not included the
sign so we leave those as is. We also introduce some signed helpers
which are used for loading immediate values in the translator.
Fixes: 282dffc8
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191021150910.23216-1-alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
By adding it to plugin-gen's header file, we can export is as
an inline, since tcg.h is included in the header (we need tcg_ctx).
Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: use g_byte_array]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
To capture all memory accesses we need hook into all the various
helper functions that are involved in memory operations as well as the
injected inline helper calls. A later commit will allow us to resolve
the actual guest HW addresses by replaying the lookup.
Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: drop haddr handling, just deal in vaddr]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We first inject empty instrumentation from translator_loop.
After translation, we go through the plugins to see what
they want to register for, filling in the empty instrumentation.
If if turns out that some instrumentation remains unused, we
remove it.
This approach supports the following features:
- Inlining TCG code for simple operations. Note that we do not
export TCG ops to plugins. Instead, we give them a C API to
insert inlined ops. So far we only support adding an immediate
to a u64, e.g. to count events.
- "Direct" callbacks. These are callbacks that do not go via
a helper. Instead, the helper is defined at run-time, so that
the plugin code is directly called from TCG. This makes direct
callbacks as efficient as possible; they are therefore used
for very frequent events, e.g. memory callbacks.
- Passing the host address to memory callbacks. Most of this
is implemented in a later patch though.
- Instrumentation of memory accesses performed from helpers.
See the corresponding comment, as well as a later patch.
Signed-off-by: Emilio G. Cota <cota@braap.org>
[AJB: add alloc_tcg_plugin_context, use glib, rm hwaddr]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
We are going to re-use mem_info later for plugins and will need to
track the mmu_idx for softmmu code.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This eliminates a set of runtime shifts. It turns out that we
require TARGET_PAGE_MASK more often than TARGET_PAGE_SIZE, so
redefine TARGET_PAGE_SIZE based on TARGET_PAGE_MASK instead of
the other way around.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
There are some uint64_t uses that expect TARGET_PAGE_MASK to
extend for a 32-bit, so this must continue to be a signed type.
Define based on TARGET_PAGE_BITS not TARGET_PAGE_SIZE; this
will make a following patch more clear.
This should not have a functional effect so far.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Using a variable that is declared "const" for this tells the
compiler that it may read the value once and assume that it
does not change across function calls.
For target_page_size, this means we have only one assert per
function, and one read of the variable.
This reduces the size of qemu-system-aarch64 by 8k.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We document this in docs/devel/load-stores.rst so lets follow it. The
32 bit and 64 bit access functions have historically not included the
sign so we leave those as is. We also introduce some signed helpers
which are used for loading immediate values in the translator.
Fixes: 282dffc8
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20191021150910.23216-1-alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Peter Maydell
Alex Bennée
Robert FoleyandAlex Bennée
Paolo Bonzini
Beata MichalskaandPeter Maydell
Emilio G. CotaandAlex Bennée
Richard Henderson
Wei YangandRichard Henderson