[Intel-SIG] x86/CPU: support ClearWater Forrest(CWF) model and ISAs#36
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quanxianwang wants to merge 2 commits intoopenvelinux:6.6-velinuxfrom
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[Intel-SIG] x86/CPU: support ClearWater Forrest(CWF) model and ISAs#36quanxianwang wants to merge 2 commits intoopenvelinux:6.6-velinuxfrom
quanxianwang wants to merge 2 commits intoopenvelinux:6.6-velinuxfrom
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commit 090e3be upstream. Server product based on the Atom Darkmont core. Intel-SIG: commit 090e3be x86/cpu: Add model number for Intel Clearwater Forest processor. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240117191844.56180-1-tony.luck@intel.com [ Quanxian Wang: amend commit log ] Signed-off-by: Quanxian Wang <quanxian.wang@intel.com>
commit a0423af92cb31e6fc4f53ef9b6e19fdf08ad4395 upstream. Latest Intel platform Clearwater Forest has introduced new instructions enumerated by CPUIDs of SHA512, SM3, SM4 and AVX-VNNI-INT16. Advertise these CPUIDs to userspace so that guests can query them directly. SHA512, SM3 and SM4 are on an expected-dense CPUID leaf and some other bits on this leaf have kernel usages. Considering they have not truly kernel usages, hide them in /proc/cpuinfo. These new instructions only operate in xmm, ymm registers and have no new VMX controls, so there is no additional host enabling required for guests to use these instructions, i.e. advertising these CPUIDs to userspace is safe. Intel-SIG: commit a0423af92cb3 x86: KVM: Advertise CPUIDs for new instructions in Clearwater Forest. Tested-by: Jiaan Lu <jiaan.lu@intel.com> Tested-by: Xuelian Guo <xuelian.guo@intel.com> Signed-off-by: Tao Su <tao1.su@linux.intel.com> Message-ID: <20241105054825.870939-1-tao1.su@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [ Quanxian Wang: amend commit log ] Signed-off-by: Quanxian Wang <quanxian.wang@intel.com>
guojinhui-liam
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commit 3607692 upstream. Add selftests for cgroup1 hierarchy. The result as follows, $ tools/testing/selftests/bpf/test_progs --name=cgroup1_hierarchy #36/1 cgroup1_hierarchy/test_cgroup1_hierarchy:OK #36/2 cgroup1_hierarchy/test_root_cgid:OK #36/3 cgroup1_hierarchy/test_invalid_level:OK #36/4 cgroup1_hierarchy/test_invalid_cgid:OK #36/5 cgroup1_hierarchy/test_invalid_hid:OK #36/6 cgroup1_hierarchy/test_invalid_cgrp_name:OK #36/7 cgroup1_hierarchy/test_invalid_cgrp_name2:OK #36/8 cgroup1_hierarchy/test_sleepable_prog:OK #36 cgroup1_hierarchy:OK Summary: 1/8 PASSED, 0 SKIPPED, 0 FAILED Besides, I also did some stress test similar to the patch #2 in this series, as follows (with CONFIG_PROVE_RCU_LIST enabled): - Continuously mounting and unmounting named cgroups in some tasks, for example: cgrp_name=$1 while true do mount -t cgroup -o none,name=$cgrp_name none /$cgrp_name umount /$cgrp_name done - Continuously run this selftest concurrently, while true; do ./test_progs --name=cgroup1_hierarchy; done They can ran successfully without any RCU warnings in dmesg. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/r/20231111090034.4248-7-laoar.shao@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
x56Jason
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Nov 10, 2025
…6_CWF_MODEL_ISAs' into intel-6.6-velinux Backporting two Clearwater Forrest commits to support new platform Clearwater Forrect(CWF) 090e3be,x86/cpu: Add model number for Intel Clearwater Forest processor,2024-01-17 11:18:44,Tony Luck tony.luck@intel.com,v6.8-rc2 a0423af,x86: KVM: Advertise CPUIDs for new instructions in Clearwater Forest,2024-11-05 13:48:25,Tao Su tao1.su@linux.intel.com,v6.13-rc1 Test Restult: building - pass simics testing - pass
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Backporting two Clearwater Forrest commits to support new platform Clearwater Forrect(CWF)
090e3be,x86/cpu: Add model number for Intel Clearwater Forest processor,2024-01-17 11:18:44,Tony Luck tony.luck@intel.com,v6.8-rc2
a0423af92cb3,x86: KVM: Advertise CPUIDs for new instructions in Clearwater Forest,2024-11-05 13:48:25,Tao Su tao1.su@linux.intel.com,v6.13-rc1
Test Restult:
building - pass
simics testing - pass