Commit 2dead15f authored by Lans Zhang's avatar Lans Zhang Committed by H. Peter Anvin

x86_64: Use __BOOT_DS instead_of __KERNEL_DS for safety

In startup_32, the running code still uses the initial GDT
located in setup. Thus, __BOOT_DS is preferred. Currently
__KERNEL_DS is lucky to equal to __BOOT_DS, but this is
not always a safe way.
Signed-off-by: default avatarLans Zhang <lans.zhang2008@gmail.com>
Link: http://lkml.kernel.org/r/51300267.6000008@gmail.comSigned-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent de1a2262
...@@ -52,7 +52,7 @@ ENTRY(startup_32) ...@@ -52,7 +52,7 @@ ENTRY(startup_32)
jnz 1f jnz 1f
cli cli
movl $(__KERNEL_DS), %eax movl $(__BOOT_DS), %eax
movl %eax, %ds movl %eax, %ds
movl %eax, %es movl %eax, %es
movl %eax, %ss movl %eax, %ss
......
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