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Groups > linux.kernel > #1719364
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] x86: enable RCU based table free |
| Date | 2017-08-24 18:10 +0200 |
| Message-ID | <ui2RH-kG-3@gated-at.bofh.it> (permalink) |
| References | <uhWCC-4AO-11@gated-at.bofh.it> <ui1sC-7MD-15@gated-at.bofh.it> <ui2f0-8jI-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, Aug 24, 2017 at 05:27:21PM +0200, Vitaly Kuznetsov wrote: > Do you think adding something like > > /* > * While x86 architecture in general requires an IPI to perform TLB > * shootdown, enablement code for several hypervisors overrides > * .flush_tlb_others hook in pv_mmu_ops and implements it by issuing > * a hypercall. To keep software pagetable walkers safe in this case we > * switch to RCU based table free (HAVE_RCU_TABLE_FREE). See the comment > * below 'ifdef CONFIG_HAVE_RCU_TABLE_FREE' in include/asm-generic/tlb.h > * for more details. > */ > > before __tlb_remove_table would suffice? Or do you see a better place > for such comment? Yes, that seems fine. Thanks!
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[PATCH v2] x86: enable RCU based table free Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-08-24 11:30 +0200
Re: [PATCH v2] x86: enable RCU based table free "Kirill A. Shutemov" <kirill@shutemov.name> - 2017-08-24 11:50 +0200
Re: [PATCH v2] x86: enable RCU based table free Peter Zijlstra <peterz@infradead.org> - 2017-08-24 16:40 +0200
Re: [PATCH v2] x86: enable RCU based table free Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-08-24 17:30 +0200
Re: [PATCH v2] x86: enable RCU based table free Peter Zijlstra <peterz@infradead.org> - 2017-08-24 18:10 +0200
Re: [PATCH v2] x86: enable RCU based table free Vitaly Kuznetsov <vkuznets@redhat.com> - 2017-08-25 09:20 +0200
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