Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: revert: reserve dma32 early for gart
-49
arch/x86/kernel/pci-dma_64.c
-49
arch/x86/kernel/pci-dma_64.c
···
8
#include <linux/pci.h>
9
#include <linux/module.h>
10
#include <linux/dmar.h>
11
-
#include <linux/bootmem.h>
12
-
#include <asm/proto.h>
13
#include <asm/io.h>
14
#include <asm/gart.h>
15
#include <asm/calgary.h>
···
286
}
287
early_param("iommu", iommu_setup);
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289
-
static __initdata void *dma32_bootmem_ptr;
290
-
static unsigned long dma32_bootmem_size __initdata = (128ULL<<20);
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-
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-
static int __init parse_dma32_size_opt(char *p)
293
-
{
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if (!p)
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return -EINVAL;
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dma32_bootmem_size = memparse(p, &p);
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return 0;
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-
}
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-
early_param("dma32_size", parse_dma32_size_opt);
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-
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-
void __init dma32_reserve_bootmem(void)
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-
{
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-
unsigned long size, align;
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if (end_pfn <= MAX_DMA32_PFN)
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return;
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-
307
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align = 64ULL<<20;
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size = round_up(dma32_bootmem_size, align);
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dma32_bootmem_ptr = __alloc_bootmem_nopanic(size, align,
310
-
__pa(MAX_DMA_ADDRESS));
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if (dma32_bootmem_ptr)
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dma32_bootmem_size = size;
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-
else
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dma32_bootmem_size = 0;
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-
}
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static void __init dma32_free_bootmem(void)
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-
{
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int node;
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-
320
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if (end_pfn <= MAX_DMA32_PFN)
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return;
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-
323
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if (!dma32_bootmem_ptr)
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return;
325
-
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for_each_online_node(node)
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free_bootmem_node(NODE_DATA(node), __pa(dma32_bootmem_ptr),
328
-
dma32_bootmem_size);
329
-
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dma32_bootmem_ptr = NULL;
331
-
dma32_bootmem_size = 0;
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-
}
333
-
334
void __init pci_iommu_alloc(void)
335
{
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-
/* free the range so iommu could get some range less than 4G */
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-
dma32_free_bootmem();
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/*
339
* The order of these functions is important for
340
* fall-back/fail-over reasons
···
8
#include <linux/pci.h>
9
#include <linux/module.h>
10
#include <linux/dmar.h>
11
#include <asm/io.h>
12
#include <asm/gart.h>
13
#include <asm/calgary.h>
···
288
}
289
early_param("iommu", iommu_setup);
290
291
void __init pci_iommu_alloc(void)
292
{
293
/*
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* The order of these functions is important for
295
* fall-back/fail-over reasons
-2
arch/x86/kernel/setup_64.c
-2
arch/x86/kernel/setup_64.c