linux-kernel - Re: [PATCH 6/6] VMware balloon: Update vmw_balloon.c to use the VMW

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Date:	Thu, 31 Mar 2016 07:39:53 -0700
From:	"Sinclair Yeh" <syeh@...are.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	pv-drivers@...are.com, Xavier Deguillard <xdeguillard@...are.com>,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH 6/6] VMware balloon: Update vmw_balloon.c to use the
 VMW_PORT macro

Hi,

Does any one know when this series will be applied?

Sinclair

On Mon, Feb 08, 2016 at 11:41:57AM -0800, Greg KH wrote:
> On Tue, Jan 19, 2016 at 01:46:05PM -0800, Sinclair Yeh wrote:
> > Updated VMWARE_BALLOON_CMD to use the common VMW_PORT macro.
> > Doing this rather than replacing all instances of VMWARE_BALLOON_CMD
> > to minimize code change.
> > 
> > Signed-off-by: Sinclair Yeh <syeh@...are.com>
> > Reviewed-by: Thomas Hellstrom <thellstrom@...are.com>
> > Reviewed-by: Alok N Kataria <akataria@...are.com>
> > Acked-by: Xavier Deguillard <xdeguillard@...are.com>
> > Cc: pv-drivers@...are.com
> > Cc: Xavier Deguillard <xdeguillard@...are.com>
> > Cc: linux-kernel@...r.kernel.org
> > Cc: virtualization@...ts.linux-foundation.org
> > Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> 
> Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> > -#define VMWARE_BALLOON_CMD(cmd, arg1, arg2, result)		\
> > -({								\
> > -	unsigned long __status, __dummy1, __dummy2, __dummy3;	\
> > -	__asm__ __volatile__ ("inl %%dx" :			\
> > -		"=a"(__status),					\
> > -		"=c"(__dummy1),					\
> > -		"=d"(__dummy2),					\
> > -		"=b"(result),					\
> > -		"=S" (__dummy3) :				\
> > -		"0"(VMW_BALLOON_HV_MAGIC),			\
> > -		"1"(VMW_BALLOON_CMD_##cmd),			\
> > -		"2"(VMW_BALLOON_HV_PORT),			\
> > -		"3"(arg1),					\
> > -		"4" (arg2) :					\
> > -		"memory");					\
> > -	if (VMW_BALLOON_CMD_##cmd == VMW_BALLOON_CMD_START)	\
> > -		result = __dummy1;				\
> > -	result &= -1UL;						\
> > -	__status & -1UL;					\
> > +#define VMWARE_BALLOON_CMD(cmd, arg1, arg2, result)			\
> > +({									\
> > +	unsigned long __status, __dummy1, __dummy2;			\
> > +	unsigned long __si, __di;					\
> > +	VMW_PORT(VMW_BALLOON_CMD_##cmd, arg1, arg2, 0,			\
> > +		 VMW_BALLOON_HV_PORT, VMW_BALLOON_HV_MAGIC,		\
> > +		 __status, result, __dummy1, __dummy2, __si, __di);	\
> > +	if (VMW_BALLOON_CMD_##cmd == VMW_BALLOON_CMD_START)		\
> > +		result = __dummy1;					\
> > +	result &= -1UL;							\
> > +	__status & -1UL;						\
> >  })
> 
> Honestly, it doesn't look anymore "readable" to me, but it's your code
> to maintain, not mine... :)
>