From 9d9bbd4d247a674deb43565582151acdc22e90d1 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sat, 23 Jun 2007 02:29:23 +0200 Subject: [PATCH] i386: Make CMPXCHG64 only dependent on PAE It is only used for PAE kernels in set_64bit. The problem is that due to a old Windows bug many CPUs need magic MSRs to enable CMPXCHG64, and we can't do that nicely early enough before it is potentially used. But since we only need it in PAE kernels so only force the checking for CMPXCHG65 with PAE. This fixes a boot failure on Transmeta Crusoe Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/i386/Kconfig | 2 +- arch/i386/Kconfig.cpu | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 8770a5d0b143..d2f6a247414d 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -541,7 +541,7 @@ config HIGHMEM4G config HIGHMEM64G bool "64GB" - depends on X86_CMPXCHG64 + depends on !M386 && !M486 help Select this if you have a 32-bit processor and more than 4 gigabytes of physical RAM. diff --git a/arch/i386/Kconfig.cpu b/arch/i386/Kconfig.cpu index d7f6fb0b30f2..5c95ceb7f122 100644 --- a/arch/i386/Kconfig.cpu +++ b/arch/i386/Kconfig.cpu @@ -299,7 +299,7 @@ config X86_POPAD_OK config X86_CMPXCHG64 bool - depends on !M386 && !M486 + depends on X86_PAE default y config X86_ALIGNMENT_16