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Commit | Line | Data |
---|---|---|
2cb7cef9 BS |
1 | From: jbeulich@novell.com |
2 | Subject: adjust Xen's swiotlb default size setting | |
3 | Patch-mainline: obsolete | |
4 | ||
5 | --- sle11-2009-02-05.orig/lib/swiotlb-xen.c 2009-02-05 11:18:17.000000000 +0100 | |
6 | +++ sle11-2009-02-05/lib/swiotlb-xen.c 2009-02-05 11:18:23.000000000 +0100 | |
7 | @@ -224,8 +224,8 @@ swiotlb_init_with_default_size(size_t de | |
8 | void __init | |
9 | swiotlb_init(void) | |
10 | { | |
11 | - long ram_end; | |
12 | - size_t defsz = 64 * (1 << 20); /* 64MB default size */ | |
13 | + unsigned long ram_end; | |
14 | + size_t defsz = 64 << 20; /* 64MB default size */ | |
15 | ||
16 | if (swiotlb_force == 1) { | |
17 | swiotlb = 1; | |
18 | @@ -234,8 +234,12 @@ swiotlb_init(void) | |
19 | is_initial_xendomain()) { | |
20 | /* Domain 0 always has a swiotlb. */ | |
21 | ram_end = HYPERVISOR_memory_op(XENMEM_maximum_ram_page, NULL); | |
22 | - if (ram_end <= 0x7ffff) | |
23 | - defsz = 2 * (1 << 20); /* 2MB on <2GB on systems. */ | |
24 | + if (ram_end <= 0x1ffff) | |
25 | + defsz = 2 << 20; /* 2MB on <512MB systems. */ | |
26 | + else if (ram_end <= 0x3ffff) | |
27 | + defsz = 4 << 20; /* 4MB on <1GB systems. */ | |
28 | + else if (ram_end <= 0x7ffff) | |
29 | + defsz = 8 << 20; /* 8MB on <2GB systems. */ | |
30 | swiotlb = 1; | |
31 | } | |
32 |