Function report |
Source Code:arch\x86\kernel\fpu\xstate.c |
Create Date:2022-07-28 07:50:39 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:xfeature_uncompacted_offset
Proto:static int xfeature_uncompacted_offset(int xfeature_nr)
Type:int
Parameter:
Type | Parameter | Name |
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int | xfeature_nr |
445 | If Supervisor features & BIT_ULL(xfeature_nr) Then |
446 | WARN_ONCE(1, "No fixed offset for xstate %d\n", xfeature_nr) |
447 | Return -1 |
450 | This check is important because it is easy to get XSTATE_** confused with XSTATE_BIT_*.(xfeature_nr) |
451 | cpuid_count(XSTATE_CPUID, xfeature_nr, & eax, & ebx, & ecx, & edx) |
452 | Return ebx |
Name | Describe |
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do_extra_xstate_size_checks | This essentially double-checks what the cpu told us about* how large the XSAVE buffer needs to be. We are recalculating* it to be safe. |
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