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| author |   Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:51 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:51 +0200 |
| commit | 9702785a747aa27baf46ff504beab6528f21f2dd (patch) | |
| tree | ab69d6f802f5b680c33999dc089e44982c74595d /arch/x86/xen/features.c | |
| parent | i386: move mach-es7000 (diff) | |
| download | linux-dev-9702785a747aa27baf46ff504beab6528f21f2dd.tar.xz linux-dev-9702785a747aa27baf46ff504beab6528f21f2dd.zip | |
i386: move xen
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/xen/features.c')
| -rw-r--r-- | arch/x86/xen/features.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/xen/features.c b/arch/x86/xen/features.c new file mode 100644 index 000000000000..0707714e40d6 --- /dev/null +++ b/arch/x86/xen/features.c @@ -0,0 +1,29 @@ +/****************************************************************************** + * features.c + * + * Xen feature flags. + * + * Copyright (c) 2006, Ian Campbell, XenSource Inc. + */ +#include <linux/types.h> +#include <linux/cache.h> +#include <linux/module.h> +#include <asm/xen/hypervisor.h> +#include <xen/features.h> + +u8 xen_features[XENFEAT_NR_SUBMAPS * 32] __read_mostly; +EXPORT_SYMBOL_GPL(xen_features); + +void xen_setup_features(void) +{ + struct xen_feature_info fi; + int i, j; + + for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) { + fi.submap_idx = i; + if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0) + break; + for (j = 0; j < 32; j++) + xen_features[i * 32 + j] = !!(fi.submap & 1<<j); + } +} |