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Message-ID: <5856bc91-cc55-2394-fc11-a3414e48778f@intel.com>
Date: Tue, 16 Mar 2021 10:46:28 -0700
From: Dave Hansen <dave.hansen@...el.com>
To: "Yu, Yu-cheng" <yu-cheng.yu@...el.com>, x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
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Arnd Bergmann <arnd@...db.de>,
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Balbir Singh <bsingharora@...il.com>,
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Cyrill Gorcunov <gorcunov@...il.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
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Cc: Jarkko Sakkinen <jarkko@...nel.org>
Subject: Re: [PATCH v23 6/9] x86/entry: Introduce ENDBR macro
On 3/16/21 10:44 AM, Yu, Yu-cheng wrote:
>> Also, Boris asked for two *different* macros for 32 and 64-bit:
>>
>> https://lore.kernel.org/linux-api/20210310231731.GK23521@zn.tnic/
>>
>> Could you do that in the next version, please?
>
> Yes, we can do two macros, probably in arch/x86/include/asm/vdso.h.
*But*, please do leverage _CET_ENDBR if you can. It seems awfully close
to what we need. If it works out, just use it for the 32/64-bit switch.
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