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: [v2,1/8] powerpc/eeh: Don't unfreeze PHB PE after reset
Date: Wed, 21 Oct 2015 22:41:43 +1100 (AEDT) [thread overview]
Message-ID: <20151021114143.4E96614076E@ozlabs.org> (raw)
In-Reply-To: <1444276739-20372-2-git-send-email-gwshan@linux.vnet.ibm.com>
On Thu, 2015-08-10 at 03:58:52 UTC, Gavin Shan wrote:
> On PowerNV platform, the PE is kept in frozen state until the PE
> reset is completed to avoid recursive EEH error caused by MMIO
> access during the period of EEH reset. The PE's frozen state is
> cleared after BARs of PCI device included in the PE are restored
> and enabled. However, we needn't clear the frozen state for PHB PE
> explicitly at this point as there is no real PE for PHB PE. As the
> PHB PE is always binding with PE#0, we actually clear PE#0, which
> is wrong. It doesn't incur any problem though.
>
> This checks if the PE is PHB PE and doesn't clear the frozen state
> if it is.
>
> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/527d10ef3a315d3cb9dc098d
cheers
next prev parent reply other threads:[~2015-10-21 11:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-08 3:58 [PATCH v2 0/8] EEH Improvement and Cleanup Gavin Shan
2015-10-08 3:58 ` [PATCH v2 1/8] powerpc/eeh: Don't unfreeze PHB PE after reset Gavin Shan
2015-10-21 11:41 ` Michael Ellerman [this message]
2015-10-08 3:58 ` [PATCH v2 2/8] powerpc/eeh: More relexed hotplug criterion Gavin Shan
2015-10-12 22:55 ` Daniel Axtens
2015-10-12 23:25 ` Gavin Shan
2015-10-13 2:48 ` Daniel Axtens
2015-10-13 4:28 ` Gavin Shan
2015-10-13 23:48 ` Daniel Axtens
2015-10-14 1:33 ` Gavin Shan
2015-10-08 3:58 ` [PATCH v2 3/8] powerpc/eeh: Force reset on fenced PHB Gavin Shan
2015-10-13 1:43 ` Daniel Axtens
2015-10-13 5:01 ` Gavin Shan
2015-10-13 5:18 ` Daniel Axtens
2015-10-08 3:58 ` [PATCH v2 4/8] powerpc/eeh: More relxed condition for enabled IO path Gavin Shan
2015-10-08 3:58 ` [PATCH v2 5/8] powerpc/pseries: Cleanup on pseries_eeh_get_state() Gavin Shan
2015-10-08 4:15 ` Andrew Donnellan
2015-10-08 3:58 ` [PATCH v2 6/8] powerpc/powernv: Cleanup on EEH comments Gavin Shan
2015-10-08 3:58 ` [PATCH v2 7/8] powerpc/powernv: Remove pnv_eeh_cap_start() Gavin Shan
2015-10-08 4:18 ` Andrew Donnellan
2015-10-08 3:58 ` [PATCH v2 8/8] powerpc/powernv: Simplify pnv_eeh_set_option() Gavin Shan
2015-10-08 4:33 ` Andrew Donnellan
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