Andy Lutomirski 6f442be2fb x86_64, traps: Stop using IST for #SS ... On a 32-bit kernel, this has no effect, since there are no IST stacks. On a 64-bit kernel, #SS can only happen in user code, on a failed iret to user space, a canonical violation on access via RSP or RBP, or a genuine stack segment violation in 32-bit kernel code. The first two cases don't need IST, and the latter two cases are unlikely fatal bugs, and promoting them to double faults would be fine. This fixes a bug in which the espfix64 code mishandles a stack segment violation. This saves 4k of memory per CPU and a tiny bit of code. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-11-23 13:56:19 -08:00
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asm	x86_64, traps: Stop using IST for #SS	2014-11-23 13:56:19 -08:00
uapi/asm	kvm: vmx: handle invvpid vm exit gracefully	2014-10-24 13:21:17 +02:00