fd169b0541
All the other register<-> memory copying functions are defined in fpu/internal.h, so move the xstate variants there too. Beyond being more consistent, this also allows FPU debugging checks to be added to them. (Because they can now use the macros defined in fpu/internal.h.) Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
#ifndef __ASM_X86_XSAVE_H
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#define __ASM_X86_XSAVE_H
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#include <linux/types.h>
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#include <asm/processor.h>
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#include <linux/uaccess.h>
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/* Bit 63 of XCR0 is reserved for future expansion */
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#define XSTATE_EXTEND_MASK (~(XSTATE_FPSSE | (1ULL << 63)))
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#define XSTATE_CPUID 0x0000000d
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#define FXSAVE_SIZE 512
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#define XSAVE_HDR_SIZE 64
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#define XSAVE_HDR_OFFSET FXSAVE_SIZE
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#define XSAVE_YMM_SIZE 256
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#define XSAVE_YMM_OFFSET (XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET)
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/* Supported features which support lazy state saving */
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#define XSTATE_LAZY (XSTATE_FP | XSTATE_SSE | XSTATE_YMM \
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| XSTATE_OPMASK | XSTATE_ZMM_Hi256 | XSTATE_Hi16_ZMM)
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/* Supported features which require eager state saving */
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#define XSTATE_EAGER (XSTATE_BNDREGS | XSTATE_BNDCSR)
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/* All currently supported features */
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#define XCNTXT_MASK (XSTATE_LAZY | XSTATE_EAGER)
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#ifdef CONFIG_X86_64
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#define REX_PREFIX "0x48, "
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#else
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#define REX_PREFIX
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#endif
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extern unsigned int xstate_size;
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extern u64 xfeatures_mask;
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extern u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
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extern void update_regset_xstate_info(unsigned int size, u64 xstate_mask);
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void *get_xsave_addr(struct xregs_state *xsave, int xstate);
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#endif
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