RM9000 icache problem
PATCH 1/1 RM9000 icache problem
The code to work around the RM9000 icache problems is wrong and ineffective. The patch below fixes that.
Signed-off-by Thomas Koeller <[email protected]>
arch/mips/kernel/signal-common.h +1 -1
@@ -176,7 +176,7 @@if ((ka->sa.sa_flags &SA_ONSTACK ) && (sas_ss_flags (sp) ==0 )) sp = current->sas_ss_sp + current->sas_ss_size; -return (void *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ?32 :ALMASK )); +return (void *)((sp - frame_size) & (ICACHE_REFILLS_WORKAROUND_WAR ? ~(cpu_icache_line_size ()-1 ) :ALMASK )); } static inline int install_sigtramp(unsigned int __user *tramp,
Signature · 9 lines
-------------------------------------------------- Thomas Koeller, Software Development Basler Vision Technologies thomas dot koeller at baslerweb dot com http://www.baslerweb.com ==============================
Quoted 2 lines · Thomas Koeller
The code to work around the RM9000 icache problems is wrong and ineffective. The patch below fixes that.
Ah, indeed. Hand applied, as your patch does not apply to the latest kernel.
Thanks,
Ralf