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[Qemu-devel] [PATCH v2 0/5] Enable TOPOEXT to support hyperthreading on
From: |
Babu Moger |
Subject: |
[Qemu-devel] [PATCH v2 0/5] Enable TOPOEXT to support hyperthreading on AMD CPU |
Date: |
Fri, 23 Feb 2018 21:30:20 -0500 |
These series enable TOPOEXT feature on AMD CPU. These are required to support
hyperthreading on kvm guests. Addresses the issues reported by these bugs
https://bugzilla.redhat.com/show_bug.cgi?id=1481253
https://bugs.launchpad.net/qemu/+bug/1703506
v2:
Fixed few more minor issues per Gary Hooks comments. Thank you Gary.
Removed the patch#1. We need to handle the instruction cache associativity
seperately. It varies based on the cpu family. I will comeback to that later.
Added two more typo corrections in patch#1 and patch#5.
v1:
Stanislav Lanci posted few patches earlier.
https://patchwork.kernel.org/patch/10040903/
Rebased his patches with few changes.
1. Spit the patches into two, separating cpuid functions
0x8000001D and 0x8000001E (Patch 2 and 3).
2. Removed the generic non-intel check and made a separate patch
with some changes(Patch 5).
3. Fixed L3_N_SETS_AMD(from 4096 to 8192) based on CPUID_Fn8000001D_ECX_x03.
Added 2 more patches.
Patch 1. Fixes cache associativity.
Patch 4. Adds TOPOEXT feature on AMD EPYC CPU.
Babu Moger (3):
target/i386: Fix a minor typo found while reviwing
target/i386: Enable TOPOEXT feature on AMD EPYC CPU
target/i386: Remove generic SMT thread check
Stanislav Lanci (2):
target/i386: Populate AMD Processor Cache Information
target/i386: Add support for CPUID_8000_001E for AMD
linux-headers/asm-x86/kvm.h | 2 +-
target/i386/cpu.c | 104 ++++++++++++++++++++++++++++++++++++++++----
target/i386/kvm.c | 31 +++++++++++--
3 files changed, 124 insertions(+), 13 deletions(-)
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1.8.3.1