linux-kernel - RE: [PATCH v12 00/37] x86: enable FRED for x86-64

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Date:   Thu, 5 Oct 2023 07:21:29 +0000
From:   "Li, Xin3" <xin3.li@...el.com>
To:     Nikolay Borisov <nik.borisov@...e.com>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>
CC:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "Lutomirski, Andy" <luto@...nel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "Christopherson,, Sean" <seanjc@...gle.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "Gross, Jurgen" <jgross@...e.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        "mhiramat@...nel.org" <mhiramat@...nel.org>,
        "andrew.cooper3@...rix.com" <andrew.cooper3@...rix.com>,
        "jiangshanlai@...il.com" <jiangshanlai@...il.com>
Subject: RE: [PATCH v12 00/37] x86: enable FRED for x86-64

> > This patch set enables the Intel flexible return and event delivery
> > (FRED) architecture for x86-64.
> >
> 
> 
> Which tree is this based on now?
>

It was based on the tip master on the day I sent the v12 patch set, i.e.,
Monday night in the US west coast.

> I tried running 'b4 diff' but it complains it can't
> find some context around arch/x86/kernel/cpu/common.c .
>

What does it complain?

> I have the tip tree updated.

I just did a rebase on the latest tip master, and did find a build bug
caused by:

[PATCH v12 33/37] x86/entry: Add fred_entry_from_kvm() for VMX to handle IRQ/NMI

as <asm/export.h> is deprecated by <linux/export.h> yesterday.

After I replaced it, it compiles and boots.  What should I do now?

Thanks!
    Xin