From: Chao Peng <chao.p.peng@linux.intel.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: wei.liu2@citrix.com, Ian.Campbell@citrix.com,
stefano.stabellini@eu.citrix.com, andrew.cooper3@citrix.com,
dario.faggioli@citrix.com, Ian.Jackson@eu.citrix.com,
xen-devel@lists.xen.org, will.auld@intel.com, keir@xen.org,
dgdegra@tycho.nsa.gov
Subject: Re: [PATCH v9 03/13] x86: maintain COS to CBM mapping for each socket
Date: Tue, 23 Jun 2015 15:08:48 +0800 [thread overview]
Message-ID: <20150623070848.GA6447@pengc-linux.bj.intel.com> (raw)
In-Reply-To: <557F1353020000780008508B@mail.emea.novell.com>
On Mon, Jun 15, 2015 at 05:02:59PM +0100, Jan Beulich wrote:
> >>> On 03.06.15 at 06:53, <chao.p.peng@linux.intel.com> wrote:
> > @@ -209,6 +215,23 @@ void psr_ctxt_switch_to(struct domain *d)
> > }
> > }
> >
> > +static int cat_cpu_prepare(unsigned int cpu)
> > +{
> > + struct psr_cat_socket_info *info;
> > +
> > + if ( !cat_socket_info )
> > + return 0;
> > +
> > + info = cat_socket_info + cpu_to_socket(cpu);
>
> Is cpu_to_socket() guaranteed to always return a value < nr_sockets?
Return –ENOSPC once this happen?
Chao
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next prev parent reply other threads:[~2015-06-23 7:08 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 4:52 [PATCH v9 00/13] enable Cache Allocation Technology (CAT) for VMs Chao Peng
2015-06-03 4:52 ` [PATCH v9 01/13] x86: add socket_cpumask Chao Peng
2015-06-15 15:59 ` Jan Beulich
2015-06-03 4:52 ` [PATCH v9 02/13] x86: detect and initialize Intel CAT feature Chao Peng
2015-06-15 15:56 ` Jan Beulich
2015-06-03 4:53 ` [PATCH v9 03/13] x86: maintain COS to CBM mapping for each socket Chao Peng
2015-06-15 16:02 ` Jan Beulich
2015-06-23 7:08 ` Chao Peng [this message]
2015-06-23 8:27 ` Jan Beulich
2015-06-03 4:53 ` [PATCH v9 04/13] x86: add COS information for each domain Chao Peng
2015-06-16 6:55 ` Jan Beulich
2015-06-03 4:53 ` [PATCH v9 05/13] x86: expose CBM length and COS number information Chao Peng
2015-06-16 6:58 ` Jan Beulich
2015-06-03 4:53 ` [PATCH v9 06/13] x86: dynamically get/set CBM for a domain Chao Peng
2015-06-16 7:08 ` Jan Beulich
2015-06-23 7:19 ` Chao Peng
2015-06-23 8:35 ` Jan Beulich
2015-06-23 9:03 ` Chao Peng
2015-06-23 9:14 ` Jan Beulich
2015-06-03 4:53 ` [PATCH v9 07/13] x86: add scheduling support for Intel CAT Chao Peng
2015-06-03 4:53 ` [PATCH v9 08/13] xsm: add CAT related xsm policies Chao Peng
2015-06-03 4:53 ` [PATCH v9 09/13] tools/libxl: minor name changes for CMT commands Chao Peng
2015-06-03 4:53 ` [PATCH v9 10/13] tools/libxl: add command to show PSR hardware info Chao Peng
2015-06-03 4:53 ` [PATCH v9 11/13] tools/libxl: introduce some socket helpers Chao Peng
2015-06-03 4:53 ` [PATCH v9 12/13] tools: add tools support for Intel CAT Chao Peng
2015-06-03 4:53 ` [PATCH v9 13/13] docs: add xl-psr.markdown Chao Peng
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