From: David Miller <davem@davemloft.net>
To: felix.manlunas@cavium.com
Cc: netdev@vger.kernel.org, raghu.vatsavayi@cavium.com,
derek.chickles@cavium.com, satananda.burla@cavium.com,
ricardo.farrington@cavium.com
Subject: Re: [PATCH net-next] liquidio: fix crash in presence of zeroed-out base address regs
Date: Wed, 30 Aug 2017 22:07:49 -0700 (PDT) [thread overview]
Message-ID: <20170830.220749.1080721940498362679.davem@davemloft.net> (raw)
In-Reply-To: <20170830231953.GA14744@felix-thinkpad.cavium.com>
From: Felix Manlunas <felix.manlunas@cavium.com>
Date: Wed, 30 Aug 2017 16:19:53 -0700
> From: Rick Farrington <ricardo.farrington@cavium.com>
>
> Fix crash in linux PF driver when BARs have been cleared/de-programmed;
> fail early init (prior to mapping BARs) if the BAR0 or
> BAR1 registers are zero.
>
> This situation can arise when the PF is added to a VM (PCI pass-through),
> then a PF FLR is issued (in the VM). After this occurs, the BAR registers
> will be zero. If we attempt to load the PF driver in the host
> (after VM has been shutdown), the host can reset.
>
> Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Applied, thanks.
prev parent reply other threads:[~2017-08-31 5:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 23:19 [PATCH net-next] liquidio: fix crash in presence of zeroed-out base address regs Felix Manlunas
2017-08-31 5:07 ` David Miller [this message]
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