Currently all fpu accessors are wedded to task_struct. However kvm also uses
the fpu in a different context. Introduce an FPU API, and replace the
current uses with the new API.
While this patchset is oriented towards deeper changes, as a first step it
simlifies xsave for kvm.
v3:
use u8 instead of bool in asm to avoid bad code generation on older
gccs.
v2:
eliminate useless padding in use_xsave() by using a larger instruction
Avi Kivity (2):
x86: eliminate TS_XSAVE
x86: Introduce 'struct fpu' and related API
arch/x86/include/asm/i387.h | 135 +++++++++++++++++++++++++++---------
arch/x86/include/asm/processor.h | 6 ++-
arch/x86/include/asm/thread_info.h | 1 -
arch/x86/include/asm/xsave.h | 7 +-
arch/x86/kernel/cpu/common.c | 5 +-
arch/x86/kernel/i387.c | 107 ++++++++++++++---------------
arch/x86/kernel/process.c | 20 +++---
arch/x86/kernel/process_32.c | 2 +-
arch/x86/kernel/process_64.c | 2 +-
arch/x86/kernel/xsave.c | 8 +-
arch/x86/math-emu/fpu_aux.c | 6 +-
11 files changed, 181 insertions(+), 118 deletions(-)
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