Messages in this thread | | | From | Avi Kivity <> | Subject | [PATCH v3 0/2] x86 FPU API | Date | Thu, 6 May 2010 11:45:44 +0300 |
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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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