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Date: Sat, 23 Jun 2007 02:29:23 +0200 (CEST) From: Andi Kleen <ak@...e.de> To: patches@...-64.org, torvalds@...l.org, linux-kernel@...r.kernel.org Subject: [PATCH for 2.6.22] [1/3] 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 <ak@...e.de> --- arch/i386/Kconfig.cpu | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux/arch/i386/Kconfig.cpu =================================================================== --- linux.orig/arch/i386/Kconfig.cpu +++ linux/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 Index: linux/arch/i386/Kconfig =================================================================== --- linux.orig/arch/i386/Kconfig +++ linux/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. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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