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Date:   Thu, 8 Jun 2023 16:34:02 -0700
From:   Yunhong Jiang <yunhong.jiang@linux.intel.com>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     "Kirill A. Shutemov" <kirill@shutemov.name>,
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Subject: Re: [patch] x86/realmode: Make stack lock work in trampoline_compat()
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On Tue, May 30, 2023 at 12:46:22PM +0200, Thomas Gleixner wrote:
> The stack locking and stack assignment macro LOAD_REALMODE_ESP fails to
> work when invoked from the 64bit trampoline entry point:
> 
> trampoline_start64
>   trampoline_compat
>     LOAD_REALMODE_ESP <- lock
One possibly dumb question and hope get some hints. The LOAD_REALMODE_ESP is
defined under .code16 directive and will be used by 32-bit mode caller also. Is
it ok because the instructions there will be same for both 16-bit and 32-bit? I
checked
https://ftp.gnu.org/old-gnu/Manuals/gas-2.9.1/html_chapter/as_16.html#SEC205 and
don't find much information there.