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x86/entry/32: Fix #MC and #DB wiring on x86_32

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DEFINE_IDTENTRY_MCE and DEFINE_IDTENTRY_DEBUG were wired up as non-RAW
on x86_32, but the code expected them to be RAW.

Get rid of all the macro indirection for them on 32-bit and just use
DECLARE_IDTENTRY_RAW and DEFINE_IDTENTRY_RAW directly.

Also add a warning to make sure that we only hit the _kernel paths
in kernel mode.

Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/9e90a7ee8e72fd757db6d92e1e5ff16339c1ecf9.1593795633.git.luto@kernel.org
This commit is contained in:
Andy Lutomirski
2020-07-03 10:02:56 -07:00
committed by Thomas Gleixner
parent f41f082422
commit 13cbc0cd4a
3 changed files with 17 additions and 12 deletions
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2
arch/x86/kernel/traps.c
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@@ -925,7 +925,7 @@ DEFINE_IDTENTRY_DEBUG_USER(exc_debug)
}
#else
/* 32 bit does not have separate entry points. */
DEFINE_IDTENTRY_DEBUG(exc_debug)
DEFINE_IDTENTRY_RAW(exc_debug)
{
unsigned long dr6, dr7;