Commit 530421ac authored by 晏艳(采苓)'s avatar 晏艳(采苓) Committed by Jonathan Corbet
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Documentation: update kernel stack for x86_64 



Commit 6538b8ea ("x86_64: expand kernel stack to 16K")
expanded kernel stack for x86_64 but left the wrong documentation,
update it.

Signed-off-by: default avatarYan Yan <yanyan.yan@antgroup.com>
Reviewed-by: default avatarLai Jiangshan <jiangshanlai@gmail.com>
Link: https://lore.kernel.org/r/20230328072537.20188-1-yanyan.yan@antgroup.com


Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 4a2d80ad

Documentation/arch/x86/kernel-stacks.rst

+1 −1
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ Most of the text from Keith Owens, hacked by AK 
x86_64 page size (PAGE_SIZE) is 4K.



Like all other architectures, x86_64 has a kernel stack for every

active thread.  These thread stacks are THREAD_SIZE (2*PAGE_SIZE) big.

active thread.  These thread stacks are THREAD_SIZE (4*PAGE_SIZE) big.

These stacks contain useful data as long as a thread is alive or a

zombie. While the thread is in user space the kernel stack is empty

except for the thread_info structure at the bottom.