linux-kernel - Re: [PATCH v3 01/10] x86/tdx: Split MMIO read and write operations

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Message-ID: <6yppfuuzhatzgugbme7us6xpgadr3un43s4dmfvpmteh4no7by@lucru5isrpfc>
Date: Mon, 19 Aug 2024 13:19:04 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Alexey Gladkov <legion@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-coco@...ts.linux.dev, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>, 
	Andrew Morton <akpm@...ux-foundation.org>, Yuan Yao <yuan.yao@...el.com>, 
	Geert Uytterhoeven <geert@...ux-m68k.org>, Yuntao Wang <ytcoode@...il.com>, Kai Huang <kai.huang@...el.com>, 
	Baoquan He <bhe@...hat.com>, Oleg Nesterov <oleg@...hat.com>, cho@...rosoft.com, 
	decui@...rosoft.com, John.Starks@...rosoft.com
Subject: Re: [PATCH v3 01/10] x86/tdx: Split MMIO read and write operations

On Fri, Aug 16, 2024 at 03:43:51PM +0200, Alexey Gladkov wrote:
> From: "Alexey Gladkov (Intel)" <legion@...nel.org>
> 
> To implement MMIO in userspace, additional memory checks need to be
> implemented. To avoid overly complicating the handle_mmio() function
> and to separate checks from actions, it would be better to split this
> function into two separate functions to handle read and write
> operations.
> 
> Signed-off-by: Alexey Gladkov (Intel) <legion@...nel.org>

Reviewed-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
  Kiryl Shutsemau / Kirill A. Shutemov