mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-24 00:49:58 +07:00
cda846f101
This patch changes 64-bit trampoline so that CR4 and EFER are provided by the kernel instead of using fixed values. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com> Link: http://lkml.kernel.org/r/1336501366-28617-24-git-send-email-jarkko.sakkinen@intel.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
43 lines
779 B
ArmAsm
43 lines
779 B
ArmAsm
.section ".rodata","a"
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#ifdef CONFIG_X86_64
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# Duplicate the global descriptor table
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# so the kernel can live anywhere
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.balign 16
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.globl tr_gdt
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tr_gdt:
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.short tr_gdt_end - tr_gdt - 1 # gdt limit
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.long pa_tr_gdt
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.short 0
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.quad 0x00cf9b000000ffff # __KERNEL32_CS
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.quad 0x00af9b000000ffff # __KERNEL_CS
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.quad 0x00cf93000000ffff # __KERNEL_DS
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tr_gdt_end:
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#endif
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.balign 4
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tr_idt: .fill 1, 6, 0
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.bss
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.balign 4
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GLOBAL(trampoline_status) .space 4
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.balign 8
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GLOBAL(trampoline_header)
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#ifdef CONFIG_X86_32
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tr_start: .space 4
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tr_gdt_pad: .space 2
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tr_gdt: .space 6
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#else
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tr_start: .space 8
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GLOBAL(tr_cr4) .space 4
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GLOBAL(tr_efer) .space 8
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#endif
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END(trampoline_header)
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#ifdef CONFIG_X86_64
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.balign PAGE_SIZE
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GLOBAL(trampoline_pgd) .space PAGE_SIZE
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#endif
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