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| From | Patrick Donnelly <batrick@batbytes.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 0/7] userfault21 update |
| Date | Mon, 12 Oct 2015 17:10:01 +0200 |
| Message-ID | <qiMTD-2Aw-9@gated-at.bofh.it> (permalink) |
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| X-Original-To | Andrea Arcangeli <aarcange@redhat.com> |
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| X-Original-Cc | Andrew Morton <akpm@linux-foundation.org>, open list <linux-kernel@vger.kernel.org>, linux-mm@kvack.org, qemu-devel@nongnu.org, kvm@vger.kernel.org, Pavel Emelyanov <xemul@parallels.com>, Sanidhya Kashyap <sanidhya.gatech@gmail.com>, zhang.zhanghailiang@huawei.com, Linus Torvalds <torvalds@linux-foundation.org>, "Kirill A. Shutemov" <kirill@shutemov.name>, Andres Lagar-Cavilla <andreslc@google.com>, Dave Hansen <dave.hansen@intel.com>, Paolo Bonzini <pbonzini@redhat.com>, Rik van Riel <riel@redhat.com>, Mel Gorman <mgorman@suse.de>, Andy Lutomirski <luto@amacapital.net>, Hugh Dickins <hughd@google.com>, Peter Feiner <pfeiner@google.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>, "Huangpeng (Peter)" <peter.huangpeng@huawei.com> |
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Hello Andrea, On Mon, Jun 15, 2015 at 1:22 PM, Andrea Arcangeli <aarcange@redhat.com> wrote: > This is an incremental update to the userfaultfd code in -mm. Sorry I'm late to this party. I'm curious how a ptrace monitor might use a userfaultfd to handle faults in all of its tracees. Is this possible without having each (newly forked) tracee "cooperate" by creating a userfaultfd and passing that to the tracer? Have you considered using one userfaultfd for an entire tree of processes (signaled through a flag)? Would not a process id included in the include/uapi/linux/userfaultfd.h:struct uffd_msg be sufficient to disambiguate faults? -- Patrick Donnelly -- 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/
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Re: [PATCH 0/7] userfault21 update Patrick Donnelly <batrick@batbytes.com> - 2015-10-12 17:10 +0200
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