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Date:   Wed, 25 Aug 2021 18:29:31 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Michael Roth <michael.roth@amd.com>
Cc:     Brijesh Singh <brijesh.singh@amd.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
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        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Joerg Roedel <jroedel@suse.de>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Ard Biesheuvel <ardb@kernel.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Andy Lutomirski <luto@kernel.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
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        Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
        David Rientjes <rientjes@google.com>,
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        Tobin Feldman-Fitzthum <tobin@ibm.com>,
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        Andi Kleen <ak@linux.intel.com>, tony.luck@intel.com,
        marcorr@google.com, sathyanarayanan.kuppuswamy@linux.intel.com
Subject: Re: [PATCH Part1 v5 23/38] x86/head/64: set up a startup %gs for
 stack protector
Message-ID: <YSZv632kJKPzpayk@zn.tnic>
References: <20210820151933.22401-1-brijesh.singh@amd.com>
 <20210820151933.22401-24-brijesh.singh@amd.com>
 <YSZTubkROktMMSba@zn.tnic>
 <20210825151835.wzgabnl7rbrge3a2@amd.com>
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On Wed, Aug 25, 2021 at 10:18:35AM -0500, Michael Roth wrote:
> On Wed, Aug 25, 2021 at 04:29:13PM +0200, Borislav Petkov wrote:
> > On Fri, Aug 20, 2021 at 10:19:18AM -0500, Brijesh Singh wrote:
> > > From: Michael Roth <michael.roth@amd.com>
> > > 
> > > As of commit 103a4908ad4d ("x86/head/64: Disable stack protection for
> > > head$(BITS).o") kernel/head64.c is compiled with -fno-stack-protector
> > > to allow a call to set_bringup_idt_handler(), which would otherwise
> > > have stack protection enabled with CONFIG_STACKPROTECTOR_STRONG. While
> > > sufficient for that case, this will still cause issues if we attempt to
								^^^

I'm tired of repeating the same review comments with you guys:

Who's "we"?

Please use passive voice in your text: no "we" or "I", etc.
Personal pronouns are ambiguous in text, especially with so many
parties/companies/etc developing the kernel so let's avoid them please.

How about you pay more attention?

> I didn't realize the the 32-bit path was something you were suggesting
> to have added in this patch, but I'll take a look at that as well.

If you're going to remove the -no-stack-protector thing for that file,
then pls remove it for both 32- and 64-bit. I.e., the revert what
103a4908ad4d did.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette