From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Jan Beulich <JBeulich@suse.com>,
David Vrabel <david.vrabel@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Juergen Gross <JGross@suse.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] xen-pciback: return proper values during BAR sizing
Date: Mon, 6 Jun 2016 09:03:09 -0400 [thread overview]
Message-ID: <5755748D.6050900@oracle.com> (raw)
In-Reply-To: <57554C5D02000078000F1DF1@prv-mh.provo.novell.com>
On 06/06/2016 04:11 AM, Jan Beulich wrote:
> @@ -225,38 +225,42 @@ static inline void read_dev_bar(struct p
> (PCI_BASE_ADDRESS_SPACE_MEMORY |
> PCI_BASE_ADDRESS_MEM_TYPE_64))) {
> bar_info->val = res[pos - 1].start >> 32;
> - bar_info->len_val = res[pos - 1].end >> 32;
> + bar_info->len_val = -resource_size(&res[pos - 1]) >> 32;
> return;
> }
> }
>
> + if (!res[pos].flags ||
> + (res[pos].flags & (IORESOURCE_DISABLED | IORESOURCE_UNSET |
> + IORESOURCE_BUSY)))
> + return;
Why are you not making this check first thing in the routine?
-boris
WARNING: multiple messages have this Message-ID (diff)
From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Jan Beulich <JBeulich@suse.com>,
David Vrabel <david.vrabel@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Juergen Gross <JGross@suse.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] xen-pciback: return proper values during BAR sizing
Date: Mon, 6 Jun 2016 09:03:09 -0400 [thread overview]
Message-ID: <5755748D.6050900@oracle.com> (raw)
In-Reply-To: <57554C5D02000078000F1DF1@prv-mh.provo.novell.com>
On 06/06/2016 04:11 AM, Jan Beulich wrote:
> @@ -225,38 +225,42 @@ static inline void read_dev_bar(struct p
> (PCI_BASE_ADDRESS_SPACE_MEMORY |
> PCI_BASE_ADDRESS_MEM_TYPE_64))) {
> bar_info->val = res[pos - 1].start >> 32;
> - bar_info->len_val = res[pos - 1].end >> 32;
> + bar_info->len_val = -resource_size(&res[pos - 1]) >> 32;
> return;
> }
> }
>
> + if (!res[pos].flags ||
> + (res[pos].flags & (IORESOURCE_DISABLED | IORESOURCE_UNSET |
> + IORESOURCE_BUSY)))
> + return;
Why are you not making this check first thing in the routine?
-boris
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next prev parent reply other threads:[~2016-06-06 13:04 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 8:08 [PATCH 0/2] xen-pciback: correct and clean up BAR handling Jan Beulich
2016-06-06 8:11 ` [PATCH 1/2] xen-pciback: return proper values during BAR sizing Jan Beulich
2016-06-06 13:03 ` Boris Ostrovsky [this message]
2016-06-06 13:03 ` Boris Ostrovsky
2016-06-06 13:51 ` Jan Beulich
2016-06-06 13:51 ` Jan Beulich
2016-06-06 14:28 ` Boris Ostrovsky
2016-06-06 14:28 ` Boris Ostrovsky
2016-06-06 8:11 ` Jan Beulich
2016-06-06 8:12 ` [PATCH 2/2] xen-pciback: clean up read_dev_bar() Jan Beulich
2016-06-06 8:12 ` Jan Beulich
2016-06-06 13:04 ` Boris Ostrovsky
2016-06-06 13:04 ` Boris Ostrovsky
2016-06-06 8:47 ` [PATCH 3/2] xen-pciback: drop rom_init() Jan Beulich
2016-06-06 8:47 ` Jan Beulich
2016-06-06 13:09 ` Boris Ostrovsky
2016-06-06 13:09 ` Boris Ostrovsky
2016-06-06 13:54 ` Jan Beulich
2016-06-06 13:54 ` Jan Beulich
2016-06-06 14:35 ` Boris Ostrovsky
2016-06-06 14:35 ` Boris Ostrovsky
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