From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Scott Wood <scottwood@freescale.com>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 1/2] powerpc/book3e-64: hv exceptions aren't MASKABLE
Date: Sat, 21 May 2011 08:30:46 +1000 [thread overview]
Message-ID: <1305930646.7481.196.camel@pasglop> (raw)
In-Reply-To: <20110520190030.GA7058@schlenkerla.am.freescale.net>
On Fri, 2011-05-20 at 14:00 -0500, Scott Wood wrote:
> In general we will not have EE soft-disabled or be napping when
> these exceptions happen, but still it is not correct.
>
> The guest doorbell exceptions can only be triggered with MSR[GS]=1,
> and thus for host kernel nesting purposes are base-level exceptions.
>
> Note that ehpriv and hypercall are triggerable from normal userspace.
> I tested that the process gets properly signalled in this case.
Please split the renaming of type->level from the actual functional
patch.
Cheers,
Ben.
prev parent reply other threads:[~2011-05-20 22:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 19:00 [PATCH 1/2] powerpc/book3e-64: hv exceptions aren't MASKABLE Scott Wood
2011-05-20 19:36 ` Kumar Gala
2011-05-20 19:39 ` Scott Wood
2011-05-20 22:30 ` Benjamin Herrenschmidt [this message]
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