All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Jan Beulich" <JBeulich@suse.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
	Wei Liu <wei.liu2@citrix.com>,
	Roger Pau Monne <roger.pau@citrix.com>
Subject: [PATCH 7/8] x86/shim: fully ignore "nosmp" and "maxcpus="
Date: Wed, 11 Jul 2018 06:11:36 -0600	[thread overview]
Message-ID: <5B45F3F802000078001D3171@prv1-mh.provo.novell.com> (raw)
In-Reply-To: <5B45F01B02000078001D30FF@prv1-mh.provo.novell.com>

In the shim case, the number of CPUs should be solely controlled by the
guest configuration file. Make sure the command line options are fully
(and not just partially) ignored.

Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1498,6 +1498,15 @@ void __init noreturn __start_xen(unsigne
     if ( smp_found_config )
         get_smp_config();
 
+    /*
+     * In the shim case, the number of CPUs should be solely controlled by the
+     * guest configuration file.
+     */
+    if ( pv_shim )
+    {
+        opt_nosmp = false;
+        max_cpus = 0;
+    }
     if ( opt_nosmp )
     {
         max_cpus = 0;



_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel

  parent reply	other threads:[~2018-07-11 12:11 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-11 11:55 [PATCH 0/8] x86: (allow to) suppress use of hyper-threading Jan Beulich
2018-07-11 12:04 ` [PATCH 1/8] cpupools: fix state when downing a CPU failed Jan Beulich
2018-07-11 12:06 ` [PATCH 2/8] x86: distinguish CPU offlining from CPU removal Jan Beulich
2018-07-12 10:53   ` Wei Liu
2018-07-12 11:48     ` Jan Beulich
2018-07-13  8:39       ` Wei Liu
2018-07-12 12:42   ` Andrew Cooper
2018-07-11 12:06 ` [PATCH 3/8] allow cpu_down() to be called earlier Jan Beulich
2018-07-12 10:55   ` Wei Liu
2018-07-12 12:44   ` Andrew Cooper
2018-07-11 12:07 ` [PATCH 4/8] x86/AMD: distinguish compute units from hyper-threads Jan Beulich
2018-07-11 18:11   ` Brian Woods
2018-07-12 13:02   ` Andrew Cooper
2018-07-12 14:22     ` Jan Beulich
2018-07-11 12:09 ` [PATCH 5/8] x86: bring up all CPUs even if not all are supposed to be used Jan Beulich
2018-07-12 15:38   ` Andrew Cooper
2018-07-13  8:11     ` Jan Beulich
2018-07-11 12:10 ` [PATCH 6/8] x86: (command line option to) avoid use of secondary hyper-threads Jan Beulich
2018-07-12 15:45   ` Andrew Cooper
2018-07-13  8:13     ` Jan Beulich
2018-07-16 12:37       ` Andrew Cooper
2018-07-16 12:53         ` Jan Beulich
2018-07-16 13:01           ` Andrew Cooper
2018-07-11 12:11 ` Jan Beulich [this message]
2018-07-11 12:23   ` [PATCH 7/8] x86/shim: fully ignore "nosmp" and "maxcpus=" Andrew Cooper
2018-07-11 15:18   ` Roger Pau Monné
2018-07-11 16:02   ` Wei Liu
2018-07-11 12:12 ` [PATCH 8/8] cpumask: tidy {,z}alloc_cpumask_var() Jan Beulich
2018-07-11 12:20   ` Andrew Cooper
2018-07-12 15:13   ` Wei Liu
     [not found] ` <5B45F26A02000078001D312F@suse.com>
2018-07-13  9:02   ` [PATCH 1/8] cpupools: fix state when downing a CPU failed Juergen Gross
2018-07-16  9:17     ` Jan Beulich
     [not found]     ` <5B4C629002000078001D4346@suse.com>
2018-07-16 11:47       ` Juergen Gross
2018-07-16 12:19         ` Jan Beulich
     [not found]         ` <5B4C8D3702000078001D45EA@suse.com>
2018-07-16 12:47           ` Juergen Gross
2018-07-16 13:01             ` Jan Beulich
     [not found]             ` <5B4C973D02000078001D4693@suse.com>
2018-07-16 14:21               ` Juergen Gross
2018-07-16 14:26                 ` Jan Beulich
     [not found]                 ` <5B4CAB1202000078001D47BC@suse.com>
2018-07-16 14:53                   ` Juergen Gross

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=5B45F3F802000078001D3171@prv1-mh.provo.novell.com \
    --to=jbeulich@suse.com \
    --cc=andrew.cooper3@citrix.com \
    --cc=roger.pau@citrix.com \
    --cc=wei.liu2@citrix.com \
    --cc=xen-devel@lists.xenproject.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.