lkml.org 
[lkml]   [2022]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/6] x86/tdx: Support hypercalls for TDX guests on Hyper-V
On Mon, Nov 21, 2022 at 12:38:36PM -0800, Dave Hansen wrote:
> On 11/21/22 11:51, Dexuan Cui wrote:
> > __tdx_hypercall() doesn't work for a TDX guest running on Hyper-V,
> > because Hyper-V uses a different calling convention, so add the
> > new function __tdx_ms_hv_hypercall().
>
> Other than R10 being variable here and fixed for __tdx_hypercall(), this
> looks *EXACTLY* the same as __tdx_hypercall(), or at least a strict
> subset of what __tdx_hypercall() can do.
>
> Did I miss something?
>
> Another way of saying this: It seems like you could do this with a new
> version of _tdx_hypercall() (and all in C) instead of a new
> __tdx_hypercall().

+1. There should be a strong reason to add another asm helper.

--
Kiryl Shutsemau / Kirill A. Shutemov

\
 
 \ /
  Last update: 2022-11-22 00:53    [W:0.235 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site