Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1167145
| Path | csiph.com!aioe.org!bofh.it!news.nic.it!robomod |
|---|---|
| From | "H. Peter Anvin" <hpa@zytor.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH V1] x86, espfix: postpone the initialization of espfix stack for AP |
| Date | Wed, 17 Jun 2015 23:20:01 +0200 |
| Message-ID | <pCsUx-4PH-5@gated-at.bofh.it> (permalink) |
| References | <pqhLc-9l-15@gated-at.bofh.it> <pqiee-Xv-15@gated-at.bofh.it> <przd1-86O-21@gated-at.bofh.it> <prRjB-1M0-51@gated-at.bofh.it> <psSwW-3sK-1@gated-at.bofh.it> <puUXD-4Ks-9@gated-at.bofh.it> <pvgYa-4le-15@gated-at.bofh.it> <pwQZz-5G3-1@gated-at.bofh.it> <pxAg2-5Rt-29@gated-at.bofh.it> <pCfXk-2UO-3@gated-at.bofh.it> <pCsKR-4E6-1@gated-at.bofh.it> |
| X-Original-To | Borislav Petkov <bp@alien8.de> |
| User-Agent | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
| MIME-Version | 1.0 |
| Content-Type | text/plain; charset=utf-8 |
| Content-Transfer-Encoding | 7bit |
| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 23 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | Gu Zheng <guz.fnst@cn.fujitsu.com>, Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@amacapital.net>, Andy Lutomirski <luto@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org> |
| X-Original-Date | Wed, 17 Jun 2015 14:11:27 -0700 |
| X-Original-Message-ID | <5581E27F.5060800@zytor.com> |
| X-Original-References | <20150515065417.GB29973@gmail.com> <55559FDA.3010205@zytor.com> <555A40C9.6010605@kernel.org> <555B5105.4040808@zytor.com> <555F0139.9040404@cn.fujitsu.com> <55666D4A.5040006@cn.fujitsu.com> <CALCETrVsMpduwHDDEZ7d-S6AgvUZxXnk4+Bm+fjB=gsjzpxKWA@mail.gmail.com> <556D7687.70402@cn.fujitsu.com> <55701E54.6090802@cn.fujitsu.com> <55812149.1040804@zytor.com> <20150617210411.GD16999@pd.tnic> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | aioe.org linux.kernel:1167145 |
Show key headers only | View raw
On 06/17/2015 02:04 PM, Borislav Petkov wrote: >> >> It isn't *at all* obvious to me at least that if the GFP_KERNEL >> allocation fails we may not get rescheduled on another CPU and/or get stuck. >> >> I'm starting to think that the right thing to do is to allocate these on >> the CPU that is bringing up the other CPU, at the same time we allocate >> the percpu area. This won't affect offline CPUs. > > Btw, as part of experimenting for something else, I was able to trigger > this even on a guest here. It is an insane guest though: 16 NUMA nodes, > with 8 cores each: > Is this reliable? -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: [PATCH V1] x86, espfix: postpone the initialization of espfix stack for AP Borislav Petkov <bp@alien8.de> - 2015-06-17 23:10 +0200
Re: [PATCH V1] x86, espfix: postpone the initialization of espfix stack for AP "H. Peter Anvin" <hpa@zytor.com> - 2015-06-17 23:20 +0200
Re: [PATCH V1] x86, espfix: postpone the initialization of espfix stack for AP Borislav Petkov <bp@alien8.de> - 2015-06-18 00:00 +0200
csiph-web