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xen/pci: Request ACS when Xen-SWIOTLB is activated.

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It used to done in the Xen startup code but that is not really
appropiate.

[v2: Update Kconfig with PCI requirement]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Konrad Rzeszutek Wilk 2010-08-19 13:34:58 -04:00
parent 956a9202cd
commit 74226b8c8a
2 changed files with 5 additions and 1 deletions
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4
arch/x86/xen/pci-swiotlb-xen.c
View File

@ -1,6 +1,7 @@
/* Glue code to lib/swiotlb-xen.c */ /* Glue code to lib/swiotlb-xen.c */
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <xen/swiotlb-xen.h> #include <xen/swiotlb-xen.h>
#include <asm/xen/hypervisor.h> #include <asm/xen/hypervisor.h>
@ -54,5 +55,8 @@ void __init pci_xen_swiotlb_init(void)
if (xen_swiotlb) { if (xen_swiotlb) {
xen_swiotlb_init(1); xen_swiotlb_init(1);
dma_ops = &xen_swiotlb_dma_ops; dma_ops = &xen_swiotlb_dma_ops;
/* Make sure ACS will be enabled */
pci_request_acs();
} }
} }

2
drivers/xen/Kconfig
View File

@ -74,6 +74,6 @@ config XEN_PLATFORM_PCI
config SWIOTLB_XEN config SWIOTLB_XEN
def_bool y def_bool y
depends on SWIOTLB depends on PCI && SWIOTLB
endmenu endmenu