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>> +#if defined(CONFIG_DEFAULT_3G) >> +#define __PAGE_OFFSET_RAW (0xC0000000) >> +#elif defined(CONFIG_DEFAULT_3G_OPT) >> +#define __PAGE_OFFSET_RAW (0xB0000000) >> +#elif defined(CONFIG_DEFAULT_2G) >> +#define __PAGE_OFFSET_RAW (0x78000000) >> +#elif defined(CONFIG_DEFAULT_1G) >> +#define __PAGE_OFFSET_RAW (0x40000000) >> +#else >> +#error "Bad user/kernel offset" >> +#endif >> + >> #ifdef __ASSEMBLY__ >> -#define __PAGE_OFFSET (0xC0000000) >> +#define __PAGE_OFFSET __PAGE_OFFSET_RAW >> #define __PHYSICAL_START CONFIG_PHYSICAL_START >> #else >> -#define __PAGE_OFFSET (0xC0000000UL) >> +#define __PAGE_OFFSET ((unsigned long)__PAGE_OFFSET_RAW) >> #define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START) >> #endif >> #define __KERNEL_START (__PAGE_OFFSET + __PHYSICAL_START) > > Changing PAGE_OFFSET this way would break at least Valgrind (the latest > release 3.1.0 by default is statically linked at address 0xb0000000, and > PIE support does not seem to be present in that release). I remember > that similar changes were also breaking Lisp implementations (cmucl, > sbcl), however, I am not really sure about this. it also breaks some java versions, so we use 3:4 Gb split in OpenVZ, but redhat still uses 4:4 in enterprise version, so number of such applications should decrease :) Thanks, Kirill - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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