From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: [PATCH 04/10] xen/swiotlb: Move the nr_tbl determination in its own function.
Date: Fri, 14 Sep 2012 17:08:35 +0100 [thread overview]
Message-ID: <alpine.DEB.2.02.1209141708300.29232@kaball.uk.xensource.com> (raw)
In-Reply-To: <1347306367-28669-5-git-send-email-konrad.wilk@oracle.com>
On Mon, 10 Sep 2012, Konrad Rzeszutek Wilk wrote:
> Moving the function out of the way to prepare for the late
> SWIOTLB init.
>
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> drivers/xen/swiotlb-xen.c | 21 +++++++++++----------
> 1 files changed, 11 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
> index 1afb4fb..a2aad6e 100644
> --- a/drivers/xen/swiotlb-xen.c
> +++ b/drivers/xen/swiotlb-xen.c
> @@ -144,25 +144,26 @@ xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)
> } while (i < nslabs);
> return 0;
> }
> +static unsigned long xen_set_nslabs(unsigned long nr_tbl)
> +{
> + if (!nr_tbl) {
> + xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
> + xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
> + } else
> + xen_io_tlb_nslabs = nr_tbl;
>
> + return xen_io_tlb_nslabs << IO_TLB_SHIFT;
> +}
> void __init xen_swiotlb_init(int verbose)
> {
> unsigned long bytes;
> int rc = -ENOMEM;
> - unsigned long nr_tbl;
> char *m = NULL;
> unsigned int repeat = 3;
>
> - nr_tbl = swiotlb_nr_tbl();
> - if (nr_tbl)
> - xen_io_tlb_nslabs = nr_tbl;
> - else {
> - xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT);
> - xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE);
> - }
> + xen_io_tlb_nslabs = swiotlb_nr_tbl();
> retry:
> - bytes = xen_io_tlb_nslabs << IO_TLB_SHIFT;
> -
> + bytes = xen_set_nslabs(xen_io_tlb_nslabs);
> /*
> * Get IO TLB memory from any location.
> */
> --
> 1.7.7.6
>
next prev parent reply other threads:[~2012-09-14 16:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-10 19:45 [PATCH] Xen-SWIOTLB fixes (v4) for v3.7 Konrad Rzeszutek Wilk
2012-09-10 19:45 ` [PATCH 01/10] xen/swiotlb: Simplify the logic Konrad Rzeszutek Wilk
2012-09-10 19:45 ` [PATCH 02/10] xen/swiotlb: With more than 4GB on 64-bit, disable the native SWIOTLB Konrad Rzeszutek Wilk
2012-09-10 19:46 ` [PATCH 03/10] swiotlb: add the late swiotlb initialization function with iotlb memory Konrad Rzeszutek Wilk
2012-09-10 19:46 ` [PATCH 04/10] xen/swiotlb: Move the nr_tbl determination in its own function Konrad Rzeszutek Wilk
2012-09-14 16:08 ` Stefano Stabellini [this message]
2012-09-10 19:46 ` [PATCH 05/10] xen/swiotlb: Move the error strings to " Konrad Rzeszutek Wilk
2012-09-14 16:00 ` Stefano Stabellini
2012-09-10 19:46 ` [PATCH 06/10] xen/swiotlb: Use the swiotlb_late_init_with_tbl to init Xen-SWIOTLB late when PV PCI is used Konrad Rzeszutek Wilk
2012-09-14 16:26 ` Stefano Stabellini
2012-09-10 19:46 ` [PATCH 07/10] xen/pcifront: Use Xen-SWIOTLB when initting if required Konrad Rzeszutek Wilk
2012-09-10 19:46 ` [PATCH 08/10] xen/swiotlb: Remove functions not needed anymore Konrad Rzeszutek Wilk
2012-09-14 16:06 ` Stefano Stabellini
2012-09-14 17:06 ` Konrad Rzeszutek Wilk
2012-09-17 10:52 ` Stefano Stabellini
2012-09-10 19:46 ` [PATCH 09/10] xen/swiotlb: Fix compile warnings when using plain integer instead of NULL pointer Konrad Rzeszutek Wilk
2012-09-14 16:11 ` Stefano Stabellini
2012-09-10 19:46 ` [PATCH 10/10] xen/swiotlb: Depending on after_bootmem is not correct Konrad Rzeszutek Wilk
2012-09-14 16:10 ` Stefano Stabellini
2012-09-14 17:09 ` Konrad Rzeszutek Wilk
2012-09-17 14:23 ` Konrad Rzeszutek Wilk
2012-09-17 14:25 ` Is: [PATCH 11/10] xen/swiotlb: For early initialization, return zero on success. Was: " Konrad Rzeszutek Wilk
2012-09-17 14:53 ` Stefano Stabellini
2012-09-17 14:52 ` Stefano Stabellini
2012-09-17 17:02 ` Konrad Rzeszutek Wilk
[not found] ` <m2n.s.1TBAAE-152299@chiark.greenend.org.uk>
2012-09-13 15:53 ` [Xen-devel] [PATCH 09/10] xen/swiotlb: Fix compile warnings when using plain integer instead of NULL pointer Ian Jackson
2012-09-13 15:56 ` Ian Jackson
2012-09-13 16:00 ` Ian Jackson
2012-09-22 13:28 ` [Xen-devel] [PATCH] Xen-SWIOTLB fixes (v4) for v3.7 Konrad Rzeszutek Wilk
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