Commit Graph

16 Commits

Author SHA1 Message Date
Erin Le
b0756bedba mem: Fix "Need is_secure arg" prefetcher crash
This commit fixes the "Need is_secure arg" crash that occurs when
using the IndirectMemoryPrefetcher, SignaturePathPrefetcher,
SignaturePathPrefetcherV2, STeMSPrefetcher, and PIFPrefetcher. This
was done by changing some variables to be AssociativeSet<...>
instead of AssociativeCache<...> and changing the affected function
calls.

Change-Id: I61808c877514efeb73ad041de273ae386711acae
2024-08-05 15:43:40 -07:00
Pranith Kumar
769f750eb9 mem-cache: Implement AssociativeSet from AssociativeCache
AssociativeSet can reuse most of the generic cache library code with the
addition of a secure bit. This reduces duplicated code.

Change-Id: I008ef79b0dd5f95418a3fb79396aeb0a6c601784
2024-04-10 16:17:57 -04:00
Tiago Mück
af2ee0db30 mem-cache: decoupled prefetchers from cache
This patches decouples the prefetchers from the cache implementation
as the first step to allow using the classic prefetchers with ruby
caches. The prefetchers that need do cache lookups can do so using
the accessor object provided when the probes are notified. This may
also facilitate connecting the same prefetcher to multiple caches.

Related JIRA:
https://gem5.atlassian.net/browse/GEM5-457
https://gem5.atlassian.net/browse/GEM5-1112

Change-Id: I4fee1a3613ae009fabf45d7b747e4582cad315ef
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
2023-11-28 18:30:49 -06:00
Daniel R. Carvalho
65c15ba188 mem-cache: Remove the Prefetcher namespace
This namespace has gone through the deprecation period
and can now be removed.

Change-Id: I31953be7ce8566576de94c9296eeeec601c9906a
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/67353
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2023-01-17 09:16:20 +00:00
Daniel R. Carvalho
974a47dfb9 misc: Adopt the gem5 namespace
Apply the gem5 namespace to the codebase.

Some anonymous namespaces could theoretically be removed,
but since this change's main goal was to keep conflicts
at a minimum, it was decided not to modify much the
general shape of the files.

A few missing comments of the form "// namespace X" that
occurred before the newly added "} // namespace gem5"
have been added for consistency.

std out should not be included in the gem5 namespace, so
they weren't.

ProtoMessage has not been included in the gem5 namespace,
since I'm not familiar with how proto works.

Regarding the SystemC files, although they belong to gem5,
they actually perform integration between gem5 and SystemC;
therefore, it deserved its own separate namespace.

Files that are automatically generated have been included
in the gem5 namespace.

The .isa files currently are limited to a single namespace.
This limitation should be later removed to make it easier
to accomodate a better API.

Regarding the files in util, gem5:: was prepended where
suitable. Notice that this patch was tested as much as
possible given that most of these were already not
previously compiling.

Change-Id: Ia53d404ec79c46edaa98f654e23bc3b0e179fe2d
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46323
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-07-01 19:08:24 +00:00
Daniel R. Carvalho
df72e9d548 mem-cache: Rename Prefetcher namespace as prefetch
As part of recent decisions regarding namespace
naming conventions, all namespaces will be changed
to snake case.

::Prefetcher became ::prefetcher.

"prefetch" was chosen over "prefetcher" to avoid generating
conflicts with the already existing variables. "prefetcher"
is a name that is expected to be more common in user's code
than "prefetch".

Change-Id: I8f07217f278a0229e05545b7847f2620ed208c66
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45410
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
2021-05-29 11:13:49 +00:00
Gabe Black
d05a0a4ea1 misc: Delete the now unnecessary create methods.
Most create() methods are no longer necessary. This change deletes them,
and occasionally moves some code from them into the constructors they
call.

Change-Id: Icbab29ba280144b892f9b12fac9e29a0839477e5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36536
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-10-30 04:00:20 +00:00
Gabe Black
91d83cc8a1 misc: Standardize the way create() constructs SimObjects.
The create() method on Params structs usually instantiate SimObjects
using a constructor which takes the Params struct as a parameter
somehow. There has been a lot of needless variation in how that was
done, making it annoying to pass Params down to base classes. Some of
the different forms were:

const Params &
Params &
Params *
const Params *
Params const*

This change goes through and fixes up every constructor and every
create() method to use the const Params & form. We use a reference
because the Params struct should never be null. We use const because
neither the create method nor the consuming object should modify the
record of the parameters as they came in from the config. That would
make consuming them not idempotent, and make it impossible to tell what
the actual simulation configuration was since it would change from any
user visible form (config script, config.ini, dot pdf output).

Change-Id: I77453cba52fdcfd5f4eec92dfb0bddb5a9945f31
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35938
Reviewed-by: Gabe Black <gabeblack@google.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-10-14 12:06:44 +00:00
Gabe Black
1cf7b28ba6 mem: Use getGuestByteOrder in the indirect memory prefetcher.
Use that instead of accessing TheISA::GuestByteOrder directly.

Change-Id: I6fbeb7501aceadb95739bb482215097af18da2fa
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32926
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-08-21 22:18:23 +00:00
Daniel R. Carvalho
0be2496dd5 mem-cache: Create Prefetcher namespace
Create a namespace for the Prefetcher classes.

As a side effect the Prefetcher suffix has been removed from the
C++'s classes names, and the memory leaking destructor overrides
have been fixed.

Change-Id: I9bae492d2fd4734bcdfb68c164345898e65102b2
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24537
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-04-17 19:18:19 +00:00
Gabe Black
921a72f4f3 mem: Delete authors lists from mem files.
Change-Id: I439d64d01950463747446a8177086eb276b8db55
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/25443
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
2020-02-17 21:51:08 +00:00
Daniel R. Carvalho
519808c02f mem-cache: Fix invalidation of prefetchers
Add an invalidation function to the AssociativeSet, so that entries
can be properly invalidated by also invalidating their replacement
data.

Both setInvalid and reset have been merged into invalidate to
indicate users that they are using an incorrect approach by
generating compilation errors, and to match CacheBlk's naming
convention.

Change-Id: I568076a3b5adda8b1311d9498b086c0dab457a14
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/24529
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-01-21 08:07:05 +00:00
Daniel
c1bd27907d mem-cache: Use SatCounter for prefetchers
Many prefetchers re-implement saturating counters with ints. Make
them use SatCounters instead.

Added missing operators and constructors to SatCounter for that to
be possible and their respective tests.

Change-Id: I36f10c89c27c9b3d1bf461e9ea546920f6ebb888
Signed-off-by: Daniel <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17995
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Javier Bueno Hedo <javier.bueno@metempsy.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
2019-05-14 07:55:06 +00:00
Javier Bueno
06b305bb34 mem-cache: Fix panic in Indirect Memory prefetcher
Memory requests with a size non-power-of-two and less than 8 values were causing
a panic, but there these should be allowed and ignored by the prefetcher.

Change-Id: I86baa60058cc8a7f232d6ba5748d4c24a463c840
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17733
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2019-04-03 09:14:04 +00:00
Andrea Mondelli
0996afe204 mem-cache: tautological comparison of byteOrder
Error:
build/X86/mem/cache/prefetch/indirect_memory.cc:56:24:
error: result of comparison of constant -1 with expression
of type 'const ByteOrder' is always false
[-Werror,-Wtautological-constant-out-of-range-compare]
    fatal_if(byteOrder == -1, "This prefetcher requires a defined ISA\n");
             ~~~~~~~~~ ^  ~~
build/X86/base/logging.hh:205:14: note: expanded from macro 'fatal_if'
        if ((cond)) {                                           \
             ^~~~
1 error generated.

Fix:
cast of constant (-1) used in comparison

Change-Id: I3deb154c2fe5b92c4ddf499176cb185c4ec7cf64
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17388
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2019-03-18 17:56:09 +00:00
Javier Bueno
b496d4abce mem-cache: Added the Indirect Memory Prefetcher
Reference:
    Xiangyao Yu, Christopher J. Hughes, Nadathur Satish, and Srinivas Devadas.
    2015. IMP: indirect memory prefetcher. In Proceedings of the 48th
    International Symposium on Microarchitecture (MICRO-48). ACM,
    New York, NY, USA, 178-190. DOI: https://doi.org/10.1145/2830772.2830807

Change-Id: I52790f69c13ec55b8c1c8b9396ef9a1fb1be9797
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/16223
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
2019-03-15 19:12:42 +00:00