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Groups > linux.kernel > #1463089
| From | Alexander Kuleshov <kuleshovmail@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] Documentation/x86_64: Fix a thread stack size |
| Date | 2016-08-15 20:30 +0200 |
| Message-ID | <s6uO5-C5-7@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
current information about THREAD_SIZE value is obsoleted. This patch fixes this. Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com> --- Documentation/x86/kernel-stacks | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/x86/kernel-stacks b/Documentation/x86/kernel-stacks index 9a0aa4d..f4b4197 100644 --- a/Documentation/x86/kernel-stacks +++ b/Documentation/x86/kernel-stacks @@ -6,7 +6,8 @@ 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 (PAGE_SIZE << 2) +or (PAGE_SIZE << 3) if the CONFIG_KASAN is enabled. 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. -- 2.8.0.rc3.1353.gea9bdc0
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[PATCH] Documentation/x86_64: Fix a thread stack size Alexander Kuleshov <kuleshovmail@gmail.com> - 2016-08-15 20:30 +0200
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