Re: [PATCH v3 7/7] util/oslib-posix: Forward SIGBUS to MCE handler under Linux

[Daniel P . Berrangé]

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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