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| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-04-02 19:53:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-24 23:57:32 +0200 |
| commit | af711cda4f94b5fddcdc5eb4134387ae026e3171 (patch) | |
| tree | 291b77deb0ad3f6fe83e8f77d8b0cfd553d07924 /drivers/xen/features.c | |
| parent | xen: add missing definitions in include/xen/interface/vcpu.h which ia64/xen n... (diff) | |
| download | linux-af711cda4f94b5fddcdc5eb4134387ae026e3171.tar.xz linux-af711cda4f94b5fddcdc5eb4134387ae026e3171.zip | |
xen: move features.c from arch/x86/xen/features.c to drivers/xen
ia64/xen also uses it too. Move it into common place so that
ia64/xen can share the code.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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 @@ +/****************************************************************************** + * 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); + } +} |