[PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Babu Moger <babu.moger@amd.com> · 2020-09-11
Re: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Paolo Bonzini <pbonzini@redhat.com> · 2020-09-12
Re: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Sean Christopherson <hidden> · 2020-09-14
Re: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Paolo Bonzini <pbonzini@redhat.com> · 2020-09-22
RE: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Babu Moger <babu.moger@amd.com> · 2020-09-22
Re: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Paolo Bonzini <pbonzini@redhat.com> · 2020-09-23
RE: [PATCH v6 04/12] KVM: SVM: Modify intercept_exceptions to generic intercepts · Babu Moger <babu.moger@amd.com> · 2020-09-23
[PATCH v6 10/12] KVM: X86: Rename and move the function vmx_handle_memory_failure to x86.c · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 05/12] KVM: SVM: Modify 64 bit intercept field to two 32 bit vectors · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 09/12] KVM: SVM: Remove set_exception_intercept and clr_exception_intercept · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 11/12] KVM: X86: Move handling of INVPCID types to x86 · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 07/12] KVM: nSVM: Cleanup nested_state data structure · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 08/12] KVM: SVM: Remove set_cr_intercept, clr_cr_intercept and is_cr_intercept · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 06/12] KVM: SVM: Add new intercept vector in vmcb_control_area · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 03/12] KVM: SVM: Change intercept_dr to generic intercepts · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 12/12] KVM:SVM: Enable INVPCID feature on AMD · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 02/12] KVM: SVM: Change intercept_cr to generic intercepts · Babu Moger <babu.moger@amd.com> · 2020-09-11
[PATCH v6 01/12] KVM: SVM: Introduce vmcb_(set_intercept/clr_intercept/_is_intercept) · Babu Moger <babu.moger@amd.com> · 2020-09-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Paolo Bonzini <pbonzini@redhat.com> · 2020-09-12
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Sean Christopherson <hidden> · 2020-09-14
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2020-09-14
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Jim Mattson <hidden> · 2021-01-19
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-01-19
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Jim Mattson <hidden> · 2021-01-20
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-01-21
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-01-21
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-01-21
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-01-23
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Jim Mattson <hidden> · 2021-02-24
RE: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-02-24
RE: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-10
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Paolo Bonzini <pbonzini@redhat.com> · 2021-03-10
RE: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-10
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-10
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Paolo Bonzini <pbonzini@redhat.com> · 2021-03-10
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-11
RE: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-12
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-24
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Paolo Bonzini <pbonzini@redhat.com> · 2021-03-24
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Hugh Dickins <hughd@google.com> · 2021-03-25
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Hugh Dickins <hughd@google.com> · 2021-03-25
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-25
[PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Borislav Petkov <bp@alien8.de> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Paolo Bonzini <pbonzini@redhat.com> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Babu Moger <babu.moger@amd.com> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Hugh Dickins <hughd@google.com> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Jim Mattson <hidden> · 2021-03-25
[PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Borislav Petkov <bp@alien8.de> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Sasha Levin <sashal@kernel.org> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Sasha Levin <sashal@kernel.org> · 2021-03-25
Re: [PATCH] x86/tlb: Flush global mappings when KAISER is disabled · Ben Hutchings <hidden> · 2021-03-25
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Jim Mattson <hidden> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Borislav Petkov <bp@alien8.de> · 2021-03-11
Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support · Babu Moger <babu.moger@amd.com> · 2021-03-11

Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support

From: Jim Mattson <hidden>
Date: 2021-02-24 01:05:48
Also in: lkml

Any updates? What should we be telling customers with Debian 9 guests? :-)

On Fri, Jan 22, 2021 at 5:52 PM Babu Moger [off-list ref] wrote:



On 1/21/21 5:51 PM, Babu Moger wrote:

quoted


On 1/20/21 9:10 PM, Babu Moger wrote:

quoted


On 1/20/21 3:45 PM, Babu Moger wrote:

quoted


On 1/20/21 3:14 PM, Jim Mattson wrote:

quoted

On Tue, Jan 19, 2021 at 3:45 PM Babu Moger [off-list ref] wrote:

quoted



On 1/19/21 5:01 PM, Jim Mattson wrote:

quoted

On Mon, Sep 14, 2020 at 11:33 AM Babu Moger [off-list ref] wrote:

quoted

Thanks Paolo. Tested Guest/nested guest/kvm units tests. Everything works
as expected.

Debian 9 does not like this patch set. As a kvm guest, it panics on a
Milan CPU unless booted with 'nopcid'. Gmail mangles long lines, so
please see the attached kernel log snippet. Debian 10 is fine, so I
assume this is a guest bug.

We had an issue with PCID feature earlier. This was showing only with SEV
guests. It is resolved recently. Do you think it is not related that?
Here are the patch set.
https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fkvm%2F160521930597.32054.4906933314022910996.stgit%40bmoger-ubuntu%2F&amp;data=04%7C01%7CBabu.Moger%40amd.com%7C3009e5f7f32b4dbd4aee08d8bdc045c9%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637467980841376327%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=%2Bva7em372XD7uaCrSy3UBH6a9n8xaTTXWCAlA3gJX78%3D&amp;reserved=0

The Debian 9 release we tested is not an SEV guest.

ok. I have not tested Debian 9 before. I will try now. Will let you know
how it goes. thanks

I have reproduced the issue locally. Will investigate. thanks

Few updates.
1. Like Jim mentioned earlier, this appears to be guest kernel issue.
Debian 9 runs the base kernel 4.9.0-14. Problem can be seen consistently
with this kernel.

2. This guest kernel(4.9.0-14) does not like the new feature INVPCID.

3. System comes up fine when invpcid feature is disabled with the boot
parameter "noinvpcid" and also with "nopcid". nopcid disables both pcid
and invpcid.

4. Upgraded the guest kernel to v5.0 and system comes up fine.

5. Also system comes up fine with latest guest kernel 5.11.0-rc4.

I did not bisect further yet.
Babu
Thanks


Some more update:
 System comes up fine with kernel v4.9(checked out on upstream tag v4.9).
So, I am assuming this is something specific to Debian 4.9.0-14 kernel.

Note: I couldn't go back prior versions(v4.8 or earlier) due to compile
issues.
Thanks
Babu

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