diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-07-10 16:22:56 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-11 15:44:57 +0200 |
| commit | 8d28aab59fe939be40efae870ced0b05caa259fb (patch) | |
| tree | 63cbe1eb47521a9005d98c695d44c4ab480730d3 /arch/x86/kernel/cpu/common_64.c | |
| parent | 3d0decc4f49e8645cd6369b02ed076bebd3d61ad (diff) | |
x86_64: add pseudo-features for 32-bit compat syscall
Add pseudo-feature bits to describe whether the CPU supports sysenter
and/or syscall from ia32-compat userspace. This removes a hardcoded
test in vdso32-setup.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/common_64.c')
| -rw-r--r-- | arch/x86/kernel/cpu/common_64.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common_64.c b/arch/x86/kernel/cpu/common_64.c index 75185023529..36537ab9e56 100644 --- a/arch/x86/kernel/cpu/common_64.c +++ b/arch/x86/kernel/cpu/common_64.c @@ -314,6 +314,9 @@ static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) if (c->extended_cpuid_level >= 0x80000007) c->x86_power = cpuid_edx(0x80000007); + /* Assume all 64-bit CPUs support 32-bit syscall */ + set_cpu_cap(c, X86_FEATURE_SYSCALL32); + if (c->x86_vendor != X86_VENDOR_UNKNOWN && cpu_devs[c->x86_vendor]->c_early_init) cpu_devs[c->x86_vendor]->c_early_init(c); |