Sudip Mukherjee <sudipm.mukher...@gmail.com> 于2021年4月8日周四 上午2:26写道： > > Hi Thomas, > > I was building v5.10.28 with malta_qemu_32r6_defconfig and noticed that > it fails to build, so tried next-20210407 to see if it has been fixed. > But linux-next also has the issue with gcc-10. > > The error is: > > ./arch/mips/include/asm/vdso/gettimeofday.h: In function > '__vdso_clock_gettime': > ./arch/mips/include/asm/vdso/gettimeofday.h:103:2: error: the register 'lo' > cannot be clobbered in 'asm' for the current target > 103 | asm volatile( > | ^~~
this operation try to save lo and hi register, while they are not exisiting on r6. We are working on figure out a patch for it. > ./arch/mips/include/asm/vdso/gettimeofday.h: In function > '__vdso_gettimeofday': > ./arch/mips/include/asm/vdso/gettimeofday.h:33:2: error: the register 'lo' > cannot be clobbered in 'asm' for the current target > 33 | asm volatile( > | ^~~ > ./arch/mips/include/asm/vdso/gettimeofday.h: In function > '__vdso_clock_getres': > ./arch/mips/include/asm/vdso/gettimeofday.h:123:2: error: the register 'lo' > cannot be clobbered in 'asm' for the current target > 123 | asm volatile( > | ^~~ > ./arch/mips/include/asm/vdso/gettimeofday.h: In function > '__vdso_clock_gettime64': > ./arch/mips/include/asm/vdso/gettimeofday.h:57:2: error: the register 'lo' > cannot be clobbered in 'asm' for the current target > 57 | asm volatile( > | ^~~ > > Any idea how to fix this? Please ignore if it has been reported before. > > > -- > Regards > Sudip -- YunQiang Su
