diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2022-02-07 15:02:52 -0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-02-15 11:31:43 +0100 |
| commit | 7c1ef59145f1c8bf9a2cc7a6ebf2fd56bbb440de (patch) | |
| tree | d2e947ed18a45d654a0d04f08e36ae8e80a2880c | |
| parent | fa6af69f38d3f409bedc55d0112eec36ed526d4b (diff) | |
x86/cpufeatures: Re-enable ENQCMD
The ENQCMD feature can only be used if CONFIG_INTEL_IOMMU_SVM is set.
Add X86_FEATURE_ENQCMD to the disabled features mask as appropriate so
that cpu_feature_enabled() can be used to check the feature.
[ bp: Massage commit message. ]
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220207230254.3342514-10-fenghua.yu@intel.com
| -rw-r--r-- | arch/x86/include/asm/disabled-features.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h index 8f28fafa98b3..1231d63f836d 100644 --- a/arch/x86/include/asm/disabled-features.h +++ b/arch/x86/include/asm/disabled-features.h @@ -56,8 +56,11 @@ # define DISABLE_PTI (1 << (X86_FEATURE_PTI & 31)) #endif -/* Force disable because it's broken beyond repair */ -#define DISABLE_ENQCMD (1 << (X86_FEATURE_ENQCMD & 31)) +#ifdef CONFIG_INTEL_IOMMU_SVM +# define DISABLE_ENQCMD 0 +#else +# define DISABLE_ENQCMD (1 << (X86_FEATURE_ENQCMD & 31)) +#endif #ifdef CONFIG_X86_SGX # define DISABLE_SGX 0 |