# Using pickaxe to track changed symbol CR4_FEATURES_ADDR 5 messages from 2006-06-05 to 2006-06-05. Participants: Thomas Glanzmann, Andreas Ericsson, Junio C Hamano, Randy.Dunlap. Thread: https://gitlist.dev/t/4400 ## Thomas Glanzmann, 2006-06-05 10:26 Subject: Using pickaxe to track changed symbol CR4_FEATURES_ADDR Message-ID: <20060605102627.GB24346@cip.informatik.uni-erlangen.de> URL: https://gitlist.dev/e/20060605102627.GB24346%40cip.informatik.uni-erlangen.de ``` Hello, I am looking for the symbol CR4_FEATURES_ADDR which must be gone in one of the last kernel revision. Now how I do use pickaxe to track any changes that involve my missing symbol? Or is there a better way to track that change down? Thomas ``` ## Andreas Ericsson, 2006-06-05 12:43 Subject: Re: Using pickaxe to track changed symbol CR4_FEATURES_ADDR Message-ID: <448426FA.1090204@op5.se> URL: https://gitlist.dev/e/448426FA.1090204%40op5.se In-Reply-To: <20060605102627.GB24346@cip.informatik.uni-erlangen.de> ``` Thomas Glanzmann wrote: > Hello, > I am looking for the symbol CR4_FEATURES_ADDR which must be gone in one > of the last kernel revision. Now how I do use pickaxe to track any > changes that involve my missing symbol? Or is there a better way to > track that change down? > $ git whatchanged -S'CR4_FEATURES_ADDR' last time I checked, but that was 10 days and an immense amount of cheap turkish alcohol ago so it's quite possible that I'm wrong. -- Andreas Ericsson andreas.ericsson@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 ``` ## Junio C Hamano, 2006-06-05 20:03 Subject: Re: Using pickaxe to track changed symbol CR4_FEATURES_ADDR Message-ID: <7v8xob4bft.fsf@assigned-by-dhcp.cox.net> URL: https://gitlist.dev/e/7v8xob4bft.fsf%40assigned-by-dhcp.cox.net In-Reply-To: <20060605102627.GB24346@cip.informatik.uni-erlangen.de> ``` Thomas Glanzmann writes: > I am looking for the symbol CR4_FEATURES_ADDR which must be gone in one > of the last kernel revision. Now how I do use pickaxe to track any > changes that involve my missing symbol? Or is there a better way to > track that change down? None of the major recent versions seem to have the symbol. : gitster; git grep -e CR4_FEATURES_ADDR \ v2.6.12-rc2 v2.6.12 v2.6.13 v2.6.14 v2.6.15 \ v2.6.16 and I did not get any google hits for "CR4_FEATURES_ADDR". Are you spelling it right? ``` ## Randy.Dunlap, 2006-06-05 20:11 Subject: Re: Using pickaxe to track changed symbol CR4_FEATURES_ADDR Message-ID: <20060605131151.b8878c7c.rdunlap@xenotime.net> URL: https://gitlist.dev/e/20060605131151.b8878c7c.rdunlap%40xenotime.net In-Reply-To: <7v8xob4bft.fsf@assigned-by-dhcp.cox.net> ``` On Mon, 05 Jun 2006 13:03:34 -0700 Junio C Hamano wrote: > Thomas Glanzmann writes: > > > I am looking for the symbol CR4_FEATURES_ADDR which must be gone in one > > of the last kernel revision. Now how I do use pickaxe to track any > > changes that involve my missing symbol? Or is there a better way to > > track that change down? > > None of the major recent versions seem to have the symbol. > > : gitster; git grep -e CR4_FEATURES_ADDR \ > v2.6.12-rc2 v2.6.12 v2.6.13 v2.6.14 v2.6.15 \ > v2.6.16 > > and I did not get any google hits for "CR4_FEATURES_ADDR". Are > you spelling it right? include/asm-i386/processor.h has names like: /* * Intel CPU features in CR4 */ #define X86_CR4_VME 0x0001 /* enable vm86 extensions */ #define X86_CR4_PVI 0x0002 /* virtual interrupts flag enable */ #define X86_CR4_TSD 0x0004 /* disable time stamp at ipl 3 */ #define X86_CR4_DE 0x0008 /* enable debugging extensions */ #define X86_CR4_PSE 0x0010 /* enable page size extensions */ #define X86_CR4_PAE 0x0020 /* enable physical address extensions */ #define X86_CR4_MCE 0x0040 /* Machine check enable */ #define X86_CR4_PGE 0x0080 /* enable global pages */ #define X86_CR4_PCE 0x0100 /* enable performance counters at ipl 3 */ #define X86_CR4_OSFXSR 0x0200 /* enable fast FPU save and restore */ #define X86_CR4_OSXMMEXCPT 0x0400 /* enable unmasked SSE exceptions */ extern unsigned long mmu_cr4_features; static inline void set_in_cr4 (unsigned long mask) { unsigned cr4; mmu_cr4_features |= mask; cr4 = read_cr4(); cr4 |= mask; write_cr4(cr4); } static inline void clear_in_cr4 (unsigned long mask) { unsigned cr4; mmu_cr4_features &= ~mask; cr4 = read_cr4(); cr4 &= ~mask; write_cr4(cr4); } but nothing exactly like you asked about. --- ~Randy ``` ## Thomas Glanzmann, 2006-06-05 20:16 Subject: Re: Using pickaxe to track changed symbol CR4_FEATURES_ADDR Message-ID: <20060605201631.GD4552@cip.informatik.uni-erlangen.de> URL: https://gitlist.dev/e/20060605201631.GD4552%40cip.informatik.uni-erlangen.de In-Reply-To: <20060605131151.b8878c7c.rdunlap@xenotime.net> ``` Hello Randy, I confused it. CR4_FEATURES_ADDR was in the glue code of parallels binary only modules, but it sounded like a a MMU definition. Thanks a lot. That was why my pickaxe did not work out in the first place. However I have a workaround for the damn build problem. See http://wwwcip.informatik.uni-erlangen.de/~sithglan/parallels/ Thanks, Thomas ```