From: "Daniel P. Berrangé" <berrange@redhat.com>
To: David Hildenbrand <david@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
Eduardo Habkost <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
qemu-devel@nongnu.org, Igor Mammedov <imammedo@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v3 7/7] util/oslib-posix: Forward SIGBUS to MCE handler under Linux
Date: Tue, 28 Sep 2021 17:59:54 +0100 [thread overview]
Message-ID: <YVNKCkH1azn1iMH5@redhat.com> (raw)
In-Reply-To: <20210816094739.21970-8-david@redhat.com>
On Mon, Aug 16, 2021 at 11:47:39AM +0200, David Hildenbrand wrote:
> Temporarily modifying the SIGBUS handler is really nasty, as we might be
> unlucky and receive an MCE SIGBUS while having our handler registered.
> Unfortunately, there is no way around messing with SIGBUS when
> MADV_POPULATE_WRITE is not applicable or not around.
>
> Let's forward SIGBUS that don't belong to us to the already registered
> handler and document the situation.
>
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
> softmmu/cpus.c | 4 ++++
> util/oslib-posix.c | 36 +++++++++++++++++++++++++++++++++---
> 2 files changed, 37 insertions(+), 3 deletions(-)
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Regards,
Daniel
--
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next prev parent reply other threads:[~2021-09-28 17:02 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-16 9:47 [PATCH v3 0/7] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc() David Hildenbrand
2021-08-16 9:47 ` [PATCH v3 1/7] util/oslib-posix: Let touch_all_pages() return an error David Hildenbrand
2021-09-28 16:21 ` Daniel P. Berrangé
2021-08-16 9:47 ` [PATCH v3 2/7] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc() David Hildenbrand
2021-09-28 16:45 ` Daniel P. Berrangé
2021-08-16 9:47 ` [PATCH v3 3/7] util/oslib-posix: Introduce and use MemsetContext for touch_all_pages() David Hildenbrand
2021-08-16 9:47 ` [PATCH v3 4/7] util/oslib-posix: Don't create too many threads with small memory or little pages David Hildenbrand
2021-09-28 16:47 ` Daniel P. Berrangé
2021-08-16 9:47 ` [PATCH v3 5/7] util/oslib-posix: Avoid creating a single thread with MADV_POPULATE_WRITE David Hildenbrand
2021-09-28 16:52 ` Daniel P. Berrangé
2021-08-16 9:47 ` [PATCH v3 6/7] util/oslib-posix: Support concurrent os_mem_prealloc() invocation David Hildenbrand
2021-09-28 16:56 ` Daniel P. Berrangé
2021-09-28 17:01 ` Daniel P. Berrangé
2021-09-28 17:17 ` David Hildenbrand
2021-08-16 9:47 ` [PATCH v3 7/7] util/oslib-posix: Forward SIGBUS to MCE handler under Linux David Hildenbrand
2021-09-28 16:59 ` Daniel P. Berrangé [this message]
2021-09-28 17:13 ` David Hildenbrand
2021-09-28 14:01 ` [PATCH v3 0/7] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc() David Hildenbrand
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