diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2008-03-22 14:13:06 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-03-22 19:25:41 +0100 |
| commit | 9e9630481ee8ef33f1cce71ce3636169fa37cd49 (patch) | |
| tree | 8606ad801c849b96863ad65a94b536bfe09fb7d6 /arch/x86/kernel/pci-dma_64.c | |
| parent | 028011e1391eab27e7bc113c2ac08d4f55584a75 (diff) | |
x86: revert: reserve dma32 early for gart
Revert
commit f62f1fc9ef94f74fda2b456d935ba2da69fa0a40
Author: Yinghai Lu <yhlu.kernel@gmail.com>
Date: Fri Mar 7 15:02:50 2008 -0800
x86: reserve dma32 early for gart
The patch has a dependency on bootmem modifications which are not .25
material that late in the -rc cycle. The problem which is addressed by
the patch is limited to machines with 256G and more memory booted with
NUMA disabled. This is not a .25 regression and the audience which is
affected by this problem is very limited, so it's safer to do the
revert than pulling in intrusive bootmem changes right now.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/pci-dma_64.c')
| -rw-r--r-- | arch/x86/kernel/pci-dma_64.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c index 8bc1e185e55..375cb2bc45b 100644 --- a/arch/x86/kernel/pci-dma_64.c +++ b/arch/x86/kernel/pci-dma_64.c @@ -8,8 +8,6 @@ #include <linux/pci.h> #include <linux/module.h> #include <linux/dmar.h> -#include <linux/bootmem.h> -#include <asm/proto.h> #include <asm/io.h> #include <asm/gart.h> #include <asm/calgary.h> @@ -288,55 +286,8 @@ static __init int iommu_setup(char *p) } early_param("iommu", iommu_setup); -static __initdata void *dma32_bootmem_ptr; -static unsigned long dma32_bootmem_size __initdata = (128ULL<<20); - -static int __init parse_dma32_size_opt(char *p) -{ - if (!p) - return -EINVAL; - dma32_bootmem_size = memparse(p, &p); - return 0; -} -early_param("dma32_size", parse_dma32_size_opt); - -void __init dma32_reserve_bootmem(void) -{ - unsigned long size, align; - if (end_pfn <= MAX_DMA32_PFN) - return; - - align = 64ULL<<20; - size = round_up(dma32_bootmem_size, align); - dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align, - __pa(MAX_DMA_ADDRESS)); - if (dma32_bootmem_ptr) - dma32_bootmem_size = size; - else - dma32_bootmem_size = 0; -} -static void __init dma32_free_bootmem(void) -{ - int node; - - if (end_pfn <= MAX_DMA32_PFN) - return; - - if (!dma32_bootmem_ptr) - return; - - for_each_online_node(node) - free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr), - dma32_bootmem_size); - - dma32_bootmem_ptr = NULL; - dma32_bootmem_size = 0; -} - void __init pci_iommu_alloc(void) { - /* free the range so iommu could get some range less than 4G */ - dma32_free_bootmem(); /* * The order of these functions is important for * fall-back/fail-over reasons |