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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-25 15:32:10 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-25 15:32:10 -0400 |
commit | 4b7227ca321ccf447cdc04538687c895db8b77f5 (patch) | |
tree | 72712127fc56aa2579e8a1508998bcabf6bd6c60 /drivers/xen/features.c | |
parent | 5dae61b80564a5583ff4b56e357bdbc733fddb76 (diff) | |
parent | 1775826ceec51187aa868406585799b7e76ffa7d (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-xen-next
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-xen-next: (52 commits)
xen: add balloon driver
xen: allow compilation with non-flat memory
xen: fold xen_sysexit into xen_iret
xen: allow set_pte_at on init_mm to be lockless
xen: disable preemption during tlb flush
xen pvfb: Para-virtual framebuffer, keyboard and pointer driver
xen: Add compatibility aliases for frontend drivers
xen: Module autoprobing support for frontend drivers
xen blkfront: Delay wait for block devices until after the disk is added
xen/blkfront: use bdget_disk
xen: Make xen-blkfront write its protocol ABI to xenstore
xen: import arch generic part of xencomm
xen: make grant table arch portable
xen: replace callers of alloc_vm_area()/free_vm_area() with xen_ prefixed one
xen: make include/xen/page.h portable moving those definitions under asm dir
xen: add resend_irq_on_evtchn() definition into events.c
Xen: make events.c portable for ia64/xen support
xen: move events.c to drivers/xen for IA64/Xen support
xen: move features.c from arch/x86/xen/features.c to drivers/xen
xen: add missing definitions in include/xen/interface/vcpu.h which ia64/xen needs
...
Diffstat (limited to 'drivers/xen/features.c')
-rw-r--r-- | drivers/xen/features.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/xen/features.c b/drivers/xen/features.c new file mode 100644 index 000000000000..0707714e40d6 --- /dev/null +++ b/drivers/xen/features.c | |||
@@ -0,0 +1,29 @@ | |||
1 | /****************************************************************************** | ||
2 | * features.c | ||
3 | * | ||
4 | * Xen feature flags. | ||
5 | * | ||
6 | * Copyright (c) 2006, Ian Campbell, XenSource Inc. | ||
7 | */ | ||
8 | #include <linux/types.h> | ||
9 | #include <linux/cache.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <asm/xen/hypervisor.h> | ||
12 | #include <xen/features.h> | ||
13 | |||
14 | u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly; | ||
15 | EXPORT_SYMBOL_GPL(xen_features); | ||
16 | |||
17 | void xen_setup_features(void) | ||
18 | { | ||
19 | struct xen_feature_info fi; | ||
20 | int i, j; | ||
21 | |||
22 | for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) { | ||
23 | fi.submap_idx = i; | ||
24 | if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) | ||
25 | break; | ||
26 | for (j = 0; j < 32; j++) | ||
27 | xen_features[i * 32 + j] = !!(fi.submap & 1<<j); | ||
28 | } | ||
29 | } | ||