linux-kernel - Re: [PATCH v3 2/6] x86/vmware: Introduce vmware

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Message-ID: <20231219232023.u4dyuvbzbh565grk@box.shutemov.name>
Date: Wed, 20 Dec 2023 02:20:23 +0300
From: kirill.shutemov@...ux.intel.com
To: Alexey Makhalov <alexey.makhalov@...adcom.com>
Cc: linux-kernel@...r.kernel.org, virtualization@...ts.linux.dev,
	bp@...en8.de, hpa@...or.com, dave.hansen@...ux.intel.com,
	mingo@...hat.com, tglx@...utronix.de, x86@...nel.org,
	netdev@...r.kernel.org, richardcochran@...il.com,
	linux-input@...r.kernel.org, dmitry.torokhov@...il.com,
	zackr@...are.com, linux-graphics-maintainer@...are.com,
	pv-drivers@...are.com, namit@...are.com, timothym@...are.com,
	akaher@...are.com, jsipek@...are.com,
	dri-devel@...ts.freedesktop.org, daniel@...ll.ch, airlied@...il.com,
	tzimmermann@...e.de, mripard@...nel.org,
	maarten.lankhorst@...ux.intel.com, horms@...nel.org
Subject: Re: [PATCH v3 2/6] x86/vmware: Introduce vmware_hypercall API

On Tue, Dec 19, 2023 at 01:57:47PM -0800, Alexey Makhalov wrote:
> +static inline
> +unsigned long vmware_hypercall1(unsigned long cmd, unsigned long in1)
...
> +static inline
> +unsigned long vmware_hypercall3(unsigned long cmd, unsigned long in1,
> +				uint32_t *out1, uint32_t *out2)
...
> +static inline
> +unsigned long vmware_hypercall4(unsigned long cmd, unsigned long in1,
> +				uint32_t *out1, uint32_t *out2,
> +				uint32_t *out3)
...
> +static inline
> +unsigned long vmware_hypercall5(unsigned long cmd, unsigned long in1,
> +				unsigned long in3, unsigned long in4,
> +				unsigned long in5, uint32_t *out2)
...
> +static inline
> +unsigned long vmware_hypercall6(unsigned long cmd, unsigned long in1,
> +				unsigned long in3, uint32_t *out2,
> +				uint32_t *out3, uint32_t *out4,
> +				uint32_t *out5)
...
> +static inline
> +unsigned long vmware_hypercall7(unsigned long cmd, unsigned long in1,
> +				unsigned long in3, unsigned long in4,
> +				unsigned long in5, uint32_t *out1,
> +				uint32_t *out2, uint32_t *out3)

Naming is weird. The number in the name doesn't help much as there seems
no system on how many of the parameters are ins and outs.

Why these combinations of ins/outs are supported?

And as an outsider, I'm curious where in2 got lost :P

-- 
  Kiryl Shutsemau / Kirill A. Shutemov