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eda32f4f93
xfeatures_mask_fpstate() is no longer valid when dynamically enabled features come into play. Rework restore_regs_from_fpstate() so it takes a constant mask which will then be applied against the maximum feature set so that the restore operation brings all features which are not in the xsave buffer xfeature bitmap into init state. This ensures that if the previous task used a dynamically enabled feature that the task which restores has all unused components properly initialized. Cleanup the last user of xfeatures_mask_fpstate() as well and remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20211014230739.461348278@linutronix.de |
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