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Subject: Re: [PATCH v8 02/33] x86/fred: make unions for the cs and ss fields
 in struct pt_regs
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To:     Thomas Gleixner <tglx@linutronix.de>, Xin Li <xin3.li@intel.com>,
        linux-kernel@vger.kernel.org, x86@kernel.org, kvm@vger.kernel.org
Cc:     mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
        peterz@infradead.org, andrew.cooper3@citrix.com, seanjc@google.com,
        pbonzini@redhat.com, ravi.v.shankar@intel.com,
        jiangshanlai@gmail.com, shan.kang@intel.com
References: <20230410081438.1750-1-xin3.li@intel.com>
 <20230410081438.1750-3-xin3.li@intel.com> <87o7lu6rjf.ffs@tglx>
From:   "H. Peter Anvin" <hpa@zytor.com>
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> 
> This does not match section
> 
>      5.2.1 Saving Information on the Regular Stack?
> 
> of version 4 and later of the specification.
> 

Yes, this is correct. This patchset was posted in April, and once we got 
some very late requests for changes I asked Xin to hold off any further 
iterations until the spec had restabilized.

	-hpa