git.baikalelectronics.ru Git - kernel.git/commit

]> git.baikalelectronics.ru Git - kernel.git/commit

author	Peter Zijlstra <peterz@infradead.org>
	Fri, 29 May 2020 21:27:38 +0000 (23:27 +0200)
committer	Thomas Gleixner <tglx@linutronix.de>
	Thu, 11 Jun 2020 13:15:23 +0000 (15:15 +0200)
commit	38c115350df7f360f45d31e2530c7acb2cb27800
tree	8c5c09d3cb0b5aa0f249c6627dc4298354f21442	tree \| snapshot
parent	12e3304bb4c70e4110c3ce6d77d3658935c02885	commit \| diff

x86/entry: Remove DBn stacks

Both #DB itself, as all other IST users (NMI, #MC) now clear DR7 on
entry. Combined with not allowing breakpoints on entry/noinstr/NOKPROBE
text and no single step (EFLAGS.TF) inside the #DB handler should guarantee
no nested #DB.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200529213321.303027161@infradead.org

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arch/x86/entry/entry_64.S		diff \| blob \| history
arch/x86/include/asm/cpu_entry_area.h		diff \| blob \| history
arch/x86/kernel/asm-offsets_64.c		diff \| blob \| history
arch/x86/kernel/dumpstack_64.c		diff \| blob \| history
arch/x86/mm/cpu_entry_area.c		diff \| blob \| history