Re: [PATCH v3 0/7] target/i386: Add support for perfmon-v2, RAS bits and EPYC-Turin CPU model

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On 10/25/24 00:18, Babu Moger wrote:

This series adds the support for following features in qemu.
1. RAS feature bits (SUCCOR, McaOverflowRecov)
2. perfmon-v2
3. Update EPYC-Genoa to support perfmon-v2 and RAS bits
4. Support for bits related to SRSO (sbpb, ibpb-brtype, srso-user-kernel-no)
5. Added support for feature bits CPUID_Fn80000021_EAX/CPUID_Fn80000021_EBX
    to address CPUID enforcement requirement in Turin platforms.
6. Add support for EPYC-Turin.

Queued, thanks. I looked at https://gitlab.com/qemu-project/qemu/-/issues/2571 and I think it's caused by the ignore_msrs=1 parameter on the KVM kernel module.

However, can you look into adding new CPUID_SVM_* bits?

Thanks,

Paolo

Link: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/57238.zip
Link: https://www.amd.com/content/dam/amd/en/documents/corporate/cr/speculative-return-stack-overflow-whitepaper.pdf
---
v3: Added SBPB, IBPB_BRTYPE, SRSO_USER_KERNEL_NO, ERAPS and RAPSIZE bits
     to EPYC-Turin.

v2: Fixed couple of typos.
     Added Reviewed-by tag from Zhao.
     Rebased on top of 6d00c6f98256 ("Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging")

v2: https://lore.kernel.org/kvm/cover.1723068946.git.babu.moger@xxxxxxx/
v1: https://lore.kernel.org/qemu-devel/cover.1718218999.git.babu.moger@xxxxxxx/

Babu Moger (6):
   target/i386: Fix minor typo in NO_NESTED_DATA_BP feature bit
   target/i386: Add RAS feature bits on EPYC CPU models
   target/i386: Enable perfmon-v2 and RAS feature bits on EPYC-Genoa
   target/i386: Expose bits related to SRSO vulnerability
   target/i386: Expose new feature bits in CPUID 8000_0021_EAX/EBX
   target/i386: Add support for EPYC-Turin model

Sandipan Das (1):
   target/i386: Add PerfMonV2 feature bit

  target/i386/cpu.c | 222 +++++++++++++++++++++++++++++++++++++++++++++-
  target/i386/cpu.h |  27 +++++-
  2 files changed, 242 insertions(+), 7 deletions(-)






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