[PATCH 4/4] x86/fpu/xstate: Copy xstate registers directly to signal frame when compacted format is in use

XSAVES is a kernel instruction and uses a compacted format. When working with user space, the kernel should provide standard-format, non-supervisor state data. We cannot do __copy_to_user() from a compacted-format kernel xstate area to a signal frame. Dave Hansen proposes this method to simplify

[PATCH 4/4] x86/fpu/xstate: Copy xstate registers directly to signal frame when compacted format is in use

XSAVES is a kernel instruction and uses a compacted format. When working with user space, the kernel should provide standard-format, non-supervisor state data. We cannot do __copy_to_user() from a compacted-format kernel xstate area to a signal frame. Dave Hansen proposes this method to simplify

[PATCH 4/4] x86/fpu/xstate: Copy xstate registers directly to signal frame when compacted format is in use

XSAVES is a kernel instruction and uses a compacted format. When working with user space, the kernel should provide standard-format, non-supervisor state data. We cannot do __copy_to_user() from a compacted-format kernel xstate area to a signal frame. Dave Hansen proposes this method to simplify

[PATCH 4/4] x86/fpu/xstate: Copy xstate registers directly to signal frame when compacted format is in use

XSAVES is a kernel instruction and uses a compacted format. When working with user space, the kernel should provide standard-format, non-supervisor state data. We cannot do __copy_to_user() from a compacted-format kernel xstate area to a signal frame. Dave Hansen proposes this method to simplify