From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH RFC 02/31] tools/libxc: Use public/featureset.h for cpuid policy generation Date: Tue, 5 Jan 2016 14:17:19 +0000 Message-ID: <568BD06F.2000608@citrix.com> References: <1450301073-28191-1-git-send-email-andrew.cooper3@citrix.com> <1450301073-28191-3-git-send-email-andrew.cooper3@citrix.com> <5679889402000078000C25CB@prv-mh.provo.novell.com> <1452003213.13361.278.camel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1452003213.13361.278.camel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Campbell , Jan Beulich Cc: Ian Jackson , Tim Deegan , Xen-devel List-Id: xen-devel@lists.xenproject.org On 05/01/16 14:13, Ian Campbell wrote: > On Tue, 2015-12-22 at 09:29 -0700, Jan Beulich wrote: >>>>> On 16.12.15 at 22:24, wrote: >>> --- a/xen/include/public/arch-x86/featureset.h >>> +++ b/xen/include/public/arch-x86/featureset.h >>> @@ -163,6 +163,7 @@ >>> >>> /* Intel-defined CPU features, CPUID level 0x00000007:0.ebx, word 5 */ >>> #define X86_FEATURE_FSGSBASE ( 5*32+ 0) /* {RD,WR}{FS,GS}BASE >>> instructions */ >>> +#define X86_FEATURE_TSC_ADJUST ( 5*32+ 1) /* TSC_ADJUST MSR >>> available */ >> This would probably better go into patch 1. > Tools would then see this defined twice with only patch 1 applied, and > since the value is actually different I think the compiler will complain. > > -#define X86_FEATURE_TSC_ADJUST 1 /* Tsc thread offset */ > +#define X86_FEATURE_TSC_ADJUST ( 5*32+ 1) /* TSC_ADJUST MSR available */ > > The comment change seems to be a semantic one? Or was it wrong beofre? Changing patch 1 won't affect the compilation of libxc. Observe in the penultimate hunk that I also change the #include ~Andrew