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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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961246b4ed
Commit e4c6bfd2d7 ("mm: rearrange
vm_area_struct for fewer cache misses") changed the layout of the
vm_area_struct structure, it broke several SPARC32 assembly routines
which used numerical constants for accessing the vm_mm field.
This patch defines the VMA_VM_MM constant to replace the immediate values.
Signed-off-by: Olivier DANET <odanet@caramail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
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* This program is used to generate definitions needed by
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* assembly language modules.
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*
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* We use the technique used in the OSF Mach kernel code:
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* generate asm statements containing #defines,
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* compile this file to assembler, and then extract the
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* #defines from the assembly-language output.
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*
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* On sparc, thread_info data is static and TI_XXX offsets are computed by hand.
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*/
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#include <linux/sched.h>
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// #include <linux/mm.h>
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#include <linux/kbuild.h>
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#include <asm/hibernate.h>
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#ifdef CONFIG_SPARC32
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int sparc32_foo(void)
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{
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DEFINE(AOFF_thread_fork_kpsr,
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offsetof(struct thread_struct, fork_kpsr));
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return 0;
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}
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#else
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int sparc64_foo(void)
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{
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#ifdef CONFIG_HIBERNATION
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BLANK();
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OFFSET(SC_REG_FP, saved_context, fp);
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OFFSET(SC_REG_CWP, saved_context, cwp);
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OFFSET(SC_REG_WSTATE, saved_context, wstate);
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OFFSET(SC_REG_TICK, saved_context, tick);
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OFFSET(SC_REG_PSTATE, saved_context, pstate);
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OFFSET(SC_REG_G4, saved_context, g4);
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OFFSET(SC_REG_G5, saved_context, g5);
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OFFSET(SC_REG_G6, saved_context, g6);
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#endif
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return 0;
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}
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#endif
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int foo(void)
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{
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BLANK();
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DEFINE(AOFF_task_thread, offsetof(struct task_struct, thread));
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BLANK();
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DEFINE(AOFF_mm_context, offsetof(struct mm_struct, context));
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BLANK();
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DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
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/* DEFINE(NUM_USER_SEGMENTS, TASK_SIZE>>28); */
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return 0;
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}
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