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From: Michael Ellerman <mpe@ellerman.id.au>
To: Gavin Shan <gwshan@linux.vnet.ibm.com>, linuxppc-dev@ozlabs.org
Cc: Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: Re: powerpc/powernv: Exclude MSI region in extended bridge window
Date: Tue, 21 Jun 2016 14:30:48 +1000 (AEST)	[thread overview]
Message-ID: <3rYZXm3HTnz9sxS@ozlabs.org> (raw)
In-Reply-To: <1466476865-13425-1-git-send-email-gwshan@linux.vnet.ibm.com>

On Tue, 2016-21-06 at 02:41:05 UTC, Gavin Shan wrote:
> The windows of root port and bridge behind that are extended to
> the PHB's windows to accomodate the PCI hotplug happening in
> future. The PHB's 64KB 32-bits MSI region is included in bridge's
> M32 windows (in hardware) though it's excluded in the corresponding
> resource, as the bridge's M32 windows have 1MB as their minimal
> alignment. We observed EEH error during system boot when the MSI
> region is included in bridge's M32 window.
> 
> This excludes top 1MB (including 64KB 32-bits MSI region) region
> from bridge's M32 windows when extending them.

AFAICS you added that code in "powerpc/powernv: Extend PCI bridge resources", so
I'll squash it into that. That way there is no window of breakage.

cheers

  parent reply	other threads:[~2016-06-21  4:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-21  2:41 [PATCH] powerpc/powernv: Exclude MSI region in extended bridge window Gavin Shan
2016-06-21  2:43 ` Gavin Shan
2016-06-21  4:30 ` Michael Ellerman [this message]
2016-06-21  6:04   ` Gavin Shan

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