In this case the function is turned into a generator with the
"yield" of the generator the return the function's execution.
Change-Id: I4b06d64c5479638712a11e3c1a2f7bd30f60d188
Any instructions require vector register should check if vector is
enabled. Any instructions need vtype CSR to execute them should check
vill bit beforehead.
On RISC-V when trap occurs the contents of PC register contains the
address of instruction that caused that trap (as opposed to the address
of instruction following it in instruction stream). Therefore this commit
does not advance the PC before reporting trap in SE mode.
Change-Id: I83f3766cff276312cefcf1b4ac6e78a6569846b9
Due to inverted logic in POWER fault handlers, unimplemented opcode and
trap faults did not report trap to GDB (if connected). This commit fixes
the problem.
While at it, I opted to use `if (! ...) { panic(...) }` rather than
`panic_if(...)`. I find it easier to understand in this case.
Change-Id: I6cd5dfd5f6546b8541d685e877afef21540d6824
The mem instructions usually executed from initiateAcc. We also need
to check vector required in those instructions
Change-Id: I97b4fec7fada432abb55ca58050615e12e00d1ca
Detected via this failing workload:
https://github.com/gem5/gem5/actions/runs/5861958237
Ir caused the following compilation error to be thrown:
```
src/arch/x86/kvm/x86_cpu.cc:1462:22: error: unused variable ‘rv’ [-Werror=unused-variable]
1462 | bool rv = isa->cpuid->doCpuid(tc, function, idx, cpuid);
| ^~
```
`rv` is unused in the .fast compilation as it's only used in the
`assert` statement immediately after.
To fix this, the `[[maybe_unused]]` annotation is used.
clang v8, when installed in this manner via Docker, did not install the
libstdc++. This caused compilation errors. This patch adds the
libstdc++-10-dev package to this Dockerfile.
Detected via this failing workload:
https://github.com/gem5/gem5/actions/runs/5861958237
It caused the following compilation error to be thrown:
```
src/arch/x86/kvm/x86_cpu.cc:1462:22: error: unused variable ‘rv’ [-Werror=unused-variable]
1462 | bool rv = isa->cpuid->doCpuid(tc, function, idx, cpuid);
| ^~
```
`rv` is unused in the .fast compilation as it's only used in the
`assert` statement immediately after.
To fix this, the `[[maybe_unused]]` annotation is used
Change-Id: Ib98dd859c62f171c8eeefae93502f92a8f133776
clang v8, when installed in this manner via Docker, did not install the
libstdc++. This caused compilation errors. This patch adds the
libstdc++-10-dev package to this Dockerfile.
Change-Id: Ia0f41e82b3df2d4bf32b418b0cb78111a35e0b9f
The previous exit event occurs when the dispatcher sends a completion
signal for a kernel, but gem5 does some kernel-based stats updates after
the signal is sent. Therefore, if these exit events are used as a way to
dump per-kernel stats, some of the stats for the kernel that just ended
will be in the next kernel's stat dump which is misleading.
This patch moves the exit event to where the stats are updated and only
exits if the dispatcher has requested a stat dump to prevent situations
where stats are updated mid-kernel.
Change-Id: I74dc1cad5fc90382a2a80564764b3e7c9fb65521
We're seeing some occasional connection timeouts in CI, possibly when we
aggressively hit the license server, so let's add a parameter to retry
the connection a few times.
Also, print the time required to connect to the server to help debug
issues.
When xbar encounters the address error, print out the port trace in the
packet for user to debug if the port trace is enabled.
To gain the packet of the access, the parameter of findPort() function
is changed from AddrRange to PacketPtr.
When running gem5 with "--debug-flags=PortTrace", we can see the full
path of the unexpected access when xbar cannot find the destination of
the address.
This patch changes the data type used for image size from int to
uint64_t. Current version allows initializing AbstractMemory types with
a maximum binary size of 2GiB. This will be limiting in many studies.
This patch changes the data type used for image size from int
to uint64_t. Current version allows initializing AbstractMemory
types with a maximum binary size of 2GiB. This will be limiting
in many studies.
Change-Id: Iea3bbd525d4a67aa7cf606f6311aef66c9b4a52c
The previous exit event occurs when the dispatcher sends a completion
signal for a kernel, but gem5 does some kernel-based stats updates after
the signal is sent. Therefore, if these exit events are used as a way to
dump per-kernel stats, some of the stats for the kernel that just ended
will be in the next kernel's stat dump which is misleading.
This patch moves the exit event to where the stats are updated and only
exits if the dispatcher has requested a stat dump to prevent situations
where stats are updated mid-kernel.
Change-Id: I74dc1cad5fc90382a2a80564764b3e7c9fb65521
We're seeing some occasional connection timeouts in CI, possibly
when we aggressively hit the license server, so let's add a
parameter to retry the connection a few times.
Also, print the time required to connect to the server to help
debug issues.
Change-Id: I804af28f79f893fcdca615d7bf82dd9b8686a74c
1. Add findPort(PacketPtr pkt) for getting the port trace from the Packet.
Keep the findPort(AddrRange addr_range) for recvMemBackdoorReq(...)
2. With the debug flag `PortTrace` enabled, user can see the full path of
the packet with the corresponding address when address error in xbar.
Change-Id: Iaf43ee2d7f8c46b9b84b2bc421a6bc3b02e01b3e
This sets continue-on-error to true on any scheduled test that uses a
matrix so we can have all sets of tests run regardless if one of them
fails or not.
- Updates the list of current gem5 Maintainers.
- Updates the MAINATAINERS.yaml comments to reflect gem5's contribution
policy and maintainer responsibilities since moving to GitHub.
- Updates the subsystem maintainers, based on maintainer's stated
preferences.
- Adds the optional 'expert' field to subsystems.
This sets continue-on-error to true on any scheduled test that
uses a matrix so we can have all sets of tests run regardless
if one of them fails or not.
Change-Id: I8f6137ebdf62a5cecd582387316c330c8a1401ca
In an SMT CPU, upon a squash, the mis-predicted(squashing) instructions
can still be executing at IEW and own phys registers. If these registers
are added back to the rename freelist on this Tick, the registers may be
renamed to be used by other SMT thread(s). This causes register
ownership hazards, which may eventually freeze the CPU. This problem
seems to date back to 2014
(https://www.mail-archive.com/gem5-users@gem5.org/msg10180.html).
This patch delays the freelist update to avoid the hazard.
I tested that this patch does not cause any performance impact for my
set of benchmarks on default non-SMT O3CPU.
In an SMT CPU, upon a squash, the phys regs used by
mispredicted instructions can still be owned by executing
instructions in IEW. If the regs are added back to freelist
on this tick, the reg may be renamed to be used by another
SMT thread. This causes reg ownership hazard, which may
eventually freeze the CPU.
This patch delays the freelist update to avoid the hazard.
Change-Id: I993b3c7d357269f01146db61fc8a7b83a989ea45
If status.vs == OFF, the RVV instruction should raise Illegal
Instruction according to RISC-V V spec. If RVV is not implemented, all
of the RVV instruction need to raise exception.
This moves the clean runner step in our yaml files to be at the
beginning of a job, so that if a runner goes down and is unable to clean
at the end, we can ensure that
subsequent jobs still run as expected.
Change-Id: Iba52694aefe03c550ad0bfdb5b5f938305273988
Due to a 60GB limit on the VMs the gem5 project's GitHub Actions
self-hosted Runners execute within, we cannot run tests which need to
download the gem5 Resource's PARSEC disk image (v1.0.0,
http://resources.gem5.org/resources/x86-parsec?version=1.0.0). This
image, 33GB, is too big and causes our runners to run out of disk space
and fail.
These changes can be reverted when we are able to increase the size of
our VMs.
The x86-parsec gem5 Resource (v1.0.0,
http://resources.gem5.org/resources/x86-parsec?version=1.0.0) is 33GB.
The gem5 GitHub Actions self-hosted runners do not have enough Disk
Space in the VMs they are run to download this. Ergo we skip it.
Change-Id: I290fe265f03ceca65b2bed87e9f4a4ad601e0fc1
This argument allows the passing of IDs of resources which should be
skipped for this check.
Note: A current limitation here is you cannot specify the version of a
resource. Passing the ID of a resource to this will skip the downloading
for all versions of that resource.
Change-Id: Ifdb7c2b71553126fd52a3d286897ed5dd8e98f7c
These tests are disabled due our GitHub Actions self-hosted Runners
having a 60GB of disk space. The PARSEC Disk Image Resource (v1.0.0,
http://resources.gem5.org/resources/x86-parsec?version=1.0.0) is 33GB
and is simply too big to download and unzip for these tests.
These tests can be reenabled when this issue is resolved.
Change-Id: I9a63aa1903cea3ce7942bdc85bcd0b24761d2f29
This moves the clean runner step in our yaml files to be at the
beginning of a job, so that if a runner goes down and is
unable to clean at the end, we can ensure that
subsequent jobs still run as expected.
Change-Id: Iba52694aefe03c550ad0bfdb5b5f938305273988
