Conversation
commit 885d1c2a30b73e50d0bbc098ddd717e22ccff266 upstream. SST-TF revision 2 supports a higher number of cores per bucket, as the current limit of 256 cores may be insufficient. To accommodate this, a new offset, "SST_TF_INFO-8," is introduced, allowing for a higher core count. Utilize this offset instead of the current "SST_TF_INFO-1" offset, based on SST-TF revision 2 or higher, and if there is a non-zero core count in any bucket. Intel-SIG: commit 885d1c2a30b7 platform/x86: ISST: Support SST-TF revision 2 Backport SST support for DMR Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20250506163531.1061185-2-srinivas.pandruvada@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [ Zhang Rui: amend commit log ] Signed-off-by: Zhang Rui <rui.zhang@intel.com>
commit d6644d737bec473a38dbd44a71553cacd636a920 upstream. SST PP revision 2 added fabric 1 P0, P1 and Pm frequencies. Export them by using a new IOCTL ISST_IF_GET_PERF_LEVEL_FABRIC_INFO. This IOCTL requires platforms with SST PP revision 2 or higher. To accommodate potential future increases in fabric count and avoid ABI changes, support is extended for up to 8 fabrics. Intel-SIG: commit d6644d737bec platform/x86: ISST: Support SST-PP revision 2 Backport SST support for DMR Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20250506163531.1061185-3-srinivas.pandruvada@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [ Zhang Rui: amend commit log ] Signed-off-by: Zhang Rui <rui.zhang@intel.com>
commit c9a20142d3420a5113f560e7dea711d2f9693117 upstream. Update SST minor version after supporting SST-PP and SST-TF version 2. Intel-SIG: commit c9a20142d342 platform/x86: ISST: Update minor version Backport SST support for DMR Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://lore.kernel.org/r/20250506163531.1061185-4-srinivas.pandruvada@linux.intel.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> [ Zhang Rui: amend commit log ] Signed-off-by: Zhang Rui <rui.zhang@intel.com>
commit e1415b9418eb22b4a7a1ef4b4aec9dd0a49e3fa7 upstream.
Based on feature revision, number of buckets can be less than the
TRL_MAX_BUCKETS. In that case core counts in the remaining buckets
can be set to some invalid values.
Hence reset core count to 0 for all buckets before assigning correct
values.
Intel-SIG: commit e1415b9418eb platform/x86: ISST: Reset core count to 0
Backport SST support for DMR
Fixes: 885d1c2a30b7 ("platform/x86: ISST: Support SST-TF revision 2")
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260325192638.3417281-1-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[ Zhang Rui: amend commit log ]
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Backport SST support for DMR.
Tests:
Tested on DMR/CWF/SRF,
On CWF/SRF, no change observed.
On DMR, sst driver starts to load. And together with #128, they successfully enables lkvs:bm:isst testcases, which rely on both sst and intel-pstate driver to work.
1: platform/x86: ISST: Support SST-TF revision 2
2: platform/x86: ISST: Support SST-PP revision 2
3: platform/x86: ISST: Update minor version
4: platform/x86: ISST: Reset core count to 0