Messages in this thread Patch in this message | | | Subject | Re: [PATCH] [RFC] [2.5 i386] GCC 3.1 -march support, PPRO_FENCE reduction, prefetch fixes and other CPU-related changes | From | Luca Barbieri <> | Date | 04 Aug 2002 16:44:41 +0200 |
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> PPro fence is required for uniprocessor pentium pro.
This should fix this and the CONFIG_MK6(II) issue.
diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/arch/i386/Config.help b/arch/i386/Config.help --- a/arch/i386/Config.help 2002-08-04 16:39:50.000000000 +0200 +++ b/arch/i386/Config.help 2002-08-04 16:38:53.000000000 +0200 @@ -490,7 +490,7 @@ Select this for an AMD K6 processor. Enables use of some extended instructions, and passes appropriate optimization flags to GCC. -CONFIG_MK6 +CONFIG_MK6II Select this for an AMD K6-2/K6-3D or K6-3. Enables use of some extended instructions, passes appropriate optimization flags to GCC and enables 3DNow! @@ -528,7 +528,7 @@ can increase performance of some operations. CONFIG_X86_PPRO_FENCE - Allows the kernel to run on Pentium Pro SMP systems by supporting a + Allows the kernel to run on Pentium Pro systems by supporting a workaround for the store ordering bug present on them. This slows down all processors except WinChips since they already do out-of-order stores. diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/arch/i386/config.in b/arch/i386/config.in --- a/arch/i386/config.in 2002-08-04 16:39:50.000000000 +0200 +++ b/arch/i386/config.in 2002-08-04 16:35:24.000000000 +0200 @@ -214,7 +214,7 @@ define_bool CONFIG_X86_F00F_BUG y fi if [ "$CONFIG_X86_USE_SSE_PREFETCH" != "y" -a "$CONFIG_X86_USE_3DNOW" != "y" -a "$CONFIG_X86_OOSTORE" != "y" ]; then - dep_bool 'Support Pentium Pro SMP and slow down all processors' CONFIG_X86_PPRO_FENCE $CONFIG_SMP + dep_bool 'Support Pentium Pro and slow down all processors' CONFIG_X86_PPRO_FENCE fi bool 'Symmetric multi-processing support' CONFIG_SMP diff --exclude-from=/home/ldb/src/linux-exclude -urNd a/include/asm-i386/bugs.h b/include/asm-i386/bugs.h --- a/include/asm-i386/bugs.h 2002-08-04 16:39:51.000000000 +0200 +++ b/include/asm-i386/bugs.h 2002-08-04 16:40:12.000000000 +0200 @@ -199,12 +199,12 @@ panic("Kernel compiled for PMMX+, assumes a local APIC without the read-before-write bug!"); #endif -#if !defined(CONFIG_X86_PPRO_FENCE) && defined(CONFIG_SMP) +#if !defined(CONFIG_X86_PPRO_FENCE) if(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL && boot_cpu_data.x86 == 6 && boot_cpu_data.x86_model <= 1 ) - panic("Kernel compiled without Pentium Pro SMP support!"); + panic("Kernel compiled without Pentium Pro support!"); #endif #if defined(CONFIG_X86_USE_3DNOW)[unhandled content-type:application/pgp-signature] | |