Changeset 17af882 in mainline for kernel/arch/amd64/Makefile.inc


Ignore:
Timestamp:
2014-06-16T11:32:05Z (10 years ago)
Author:
Jakub Jermar <jakub@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
2cb32f9
Parents:
334bf28
Message:

Switch the amd64 kernel (back) from 'large' to 'kernel' memory model.

  • This makes the amd64 kernel 6% smaller and more comfortable to debug.
  • Unlike in the original 'kernel' memory model implementation, KA2PA(PA2KA(x)) == x; for x from kernel identity.
  • Memory outside of the kernel identity region continues to be available by the standard means.
File:
1 edited

Legend:

Unmodified
Added
Removed

  • kernel/arch/amd64/Makefile.inc

    r334bf28 r17af882  
    3232
    3333FPU_NO_CFLAGS = -mno-sse -mno-sse2
    34 CMN1 = -m64 -mcmodel=large -mno-red-zone -fno-unwind-tables -fno-omit-frame-pointer
     34CMN1 = -m64 -mcmodel=kernel -mno-red-zone -fno-unwind-tables -fno-omit-frame-pointer
    3535GCC_CFLAGS += $(CMN1)
    3636ICC_CFLAGS += $(CMN1)
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