xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

MIPS: Exclude more dsemul code when CONFIG_MIPS_FP_SUPPORT=n

Browse Source 
This furthers what commit 42b10815d5 ("MIPS: Don't compile math-emu
when CONFIG_MIPS_FP_SUPPORT=n") has done

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Yousong Zhou
2020-03-24 23:27:51 +08:00
committed by Thomas Bogendoerfer
parent d191aaffe3
commit aebdc6ff3b
3 changed files with 29 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
arch/mips/kernel/process.c
View File

@@ -75,7 +75,9 @@ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp)
lose_fpu(0);
clear_thread_flag(TIF_MSA_CTX_LIVE);
clear_used_math();
#ifdef CONFIG_MIPS_FP_SUPPORT
atomic_set(&current->thread.bd_emu_frame, BD_EMUFRAME_NONE);
#endif
init_dsp();
regs->cp0_epc = pc;
regs->regs[29] = sp;
@@ -176,7 +178,9 @@ int copy_thread_tls(unsigned long clone_flags, unsigned long usp,
clear_tsk_thread_flag(p, TIF_FPUBOUND);
#endif /* CONFIG_MIPS_MT_FPAFF */
#ifdef CONFIG_MIPS_FP_SUPPORT
atomic_set(&p->thread.bd_emu_frame, BD_EMUFRAME_NONE);
#endif
if (clone_flags & CLONE_SETTLS)
ti->tp_value = tls;
@@ -650,8 +654,10 @@ unsigned long mips_stack_top(void)
{
unsigned long top = TASK_SIZE & PAGE_MASK;
/* One page for branch delay slot "emulation" */
top -= PAGE_SIZE;
if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT)) {
/* One page for branch delay slot "emulation" */
top -= PAGE_SIZE;
}
/* Space for the VDSO, data page & GIC user page */
top -= PAGE_ALIGN(current->thread.abi->vdso->size);