| From a1afd01c175324656d0e8f1c82ea94b474953c04 Mon Sep 17 00:00:00 2001 |
| From: Joerg Roedel <joerg.roedel@amd.com> |
| Date: Tue, 18 Nov 2008 12:44:21 +0100 |
| Subject: x86: default to SWIOTLB=y on x86_64 |
| |
| From: Joerg Roedel <joerg.roedel@amd.com> |
| |
| commit a1afd01c175324656d0e8f1c82ea94b474953c04 upstream. |
| |
| Impact: fixes korg bugzilla 11980 |
| |
| A kernel for a 64bit x86 system should always contain the swiotlb code |
| in case it is booted on a machine without any hardware IOMMU supported |
| by the kernel and more than 4GB of RAM. This patch changes Kconfig to |
| always compile swiotlb into the kernel for x86_64. |
| |
| Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> |
| Signed-off-by: Ingo Molnar <mingo@elte.hu> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| |
| --- |
| arch/x86/Kconfig | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/arch/x86/Kconfig |
| +++ b/arch/x86/Kconfig |
| @@ -569,7 +569,7 @@ config AMD_IOMMU |
| |
| # need this always selected by IOMMU for the VIA workaround |
| config SWIOTLB |
| - bool |
| + def_bool y if X86_64 |
| help |
| Support for software bounce buffers used on x86-64 systems |
| which don't have a hardware IOMMU (e.g. the current generation |
