x86/entry: Provide IDTENTRY_SYSVEC
authorThomas Gleixner <tglx@linutronix.de>
Thu, 21 May 2020 20:05:38 +0000 (22:05 +0200)
committerThomas Gleixner <tglx@linutronix.de>
Thu, 11 Jun 2020 13:15:13 +0000 (15:15 +0200)
commit6368558c37107bed35950cfbd994f49de07236dc
treec4fd9ead8807eea01be4b3a4120b98cca21c6aa1
parentfa5e5c409213265da8a188b4a5e4e641b1382eb4
x86/entry: Provide IDTENTRY_SYSVEC

Provide IDTENTRY variants for system vectors to consolidate the different
mechanisms to emit the ASM stubs for 32- and 64-bit.

On 64-bit this also moves the stack switching from ASM to C code. 32-bit will
excute the system vectors w/o stack switching as before.

The simple variant is meant for "empty" system vectors like scheduler IPI
and KVM posted interrupt vectors. These do not need the full glory of irq
enter/exit handling with softirq processing and more.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20200521202119.185317067@linutronix.de
arch/x86/entry/entry_32.S
arch/x86/entry/entry_64.S
arch/x86/include/asm/idtentry.h