> >> On Sat, Jan 16, 2021 at 6:37 AM kernel test robot <lkp@xxxxxxxxx> wrote: > >>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > >>> head: 1d94330a437a573cfdf848f6743b1ed169242c8a > >>> commit: eff8728fe69880d3f7983bec3fb6cea4c306261f vmlinux.lds.h: Add PGO and AutoFDO input sections > >>> date: 5 months ago > >>> config: parisc-randconfig-r032-20210116 (attached as .config) > >>> compiler: hppa64-linux-gcc (GCC) 9.3.0 > >>> reproduce (this is a W=1 build): > >>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > >>> chmod +x ~/bin/make.cross > >>> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=eff8728fe69880d3f7983bec3fb6cea4c306261f > >>> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > >>> git fetch --no-tags linus master > >>> git checkout eff8728fe69880d3f7983bec3fb6cea4c306261f > >>> # save the attached .config to linux build tree > >>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc > >>> > >>> If you fix the issue, kindly add following tag as appropriate > >>> Reported-by: kernel test robot <lkp@xxxxxxxxx> > >>> > >>> All errors (new ones prefixed by >>): > >>> > >>> hppa64-linux-ld: mm/page_alloc.o(.ref.text+0x110): cannot reach unknown > >>> hppa64-linux-ld: mm/memblock.o(.text+0x27c): cannot reach __warn_printk > >>> hppa64-linux-ld: mm/memblock.o(.meminit.text+0xc4): cannot reach printk .... The problem with this .config is, that both CONFIG_MODULES and CONFIG_MLONGCALLS are set to "n". The Kconfig autodetection needs fixing to enable CONFIG_MLONGCALLS in this case. This patch fixes it for me: [PATCH] Require -mlong-calls gcc option for !CONFIG_MODULES When building a kernel without module support, the CONFIG_MLONGCALL option needs to be enabled. This patch fixes the autodetection in the Kconfig script and uses a far call to preempt_schedule_irq() in intr_do_preempt(). Signed-off-by: Helge Deller <deller@xxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> --- diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 78b17621ee4a..278462186ac4 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -202,9 +202,8 @@ config PREFETCH depends on PA8X00 || PA7200 config MLONGCALLS - bool "Enable the -mlong-calls compiler option for big kernels" - default y if !MODULES || UBSAN || FTRACE - default n + def_bool y if !MODULES || UBSAN || FTRACE + bool "Enable the -mlong-calls compiler option for big kernels" if MODULES && !UBSAN && !FTRACE depends on PA8X00 help If you configure the kernel to include many drivers built-in instead diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index beba9816cc6c..6320f6a8397c 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -997,10 +997,19 @@ intr_do_preempt: bb,<,n %r20, 31 - PSW_SM_I, intr_restore nop - BL preempt_schedule_irq, %r2 - nop + /* ssm PSW_SM_I done later in intr_restore */ +#ifdef CONFIG_MLONGCALLS + ldil L%intr_restore, %r2 + load32 preempt_schedule_irq, %r1 + bv %r0(%r1) + ldo R%intr_restore(%r2), %r2 +#else + ldil L%intr_restore, %r2 + BL preempt_schedule_irq + ldo R%intr_restore(%r2), %r2 +#endif + - b,n intr_restore /* ssm PSW_SM_I done by intr_restore */ #endif /* CONFIG_PREEMPTION */ /*
