BUILDTIME_TABLE_SORT works for !MMU as well, so enable it.
Tested on QEMU and FPGA.
Signed-off-by: Jisheng Zhang <[email protected]>
---
arch/riscv/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c5e42cc37604..212ea28e346b 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -50,7 +50,7 @@ config RISCV
select ARCH_WANT_LD_ORPHAN_WARN if !XIP_KERNEL
select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
- select BUILDTIME_TABLE_SORT if MMU
+ select BUILDTIME_TABLE_SORT
select CLINT_TIMER if !MMU
select CLONE_BACKWARDS
select COMMON_CLK
--
2.40.0
Hey Jisheng,
On Mon, Apr 10, 2023 at 12:43:06AM +0800, Jisheng Zhang wrote:
> BUILDTIME_TABLE_SORT works for !MMU as well, so enable it.
>
> Tested on QEMU and FPGA.
>
> Signed-off-by: Jisheng Zhang <[email protected]>
Fails to build for nommu_k210_defconfig:
make ARCH=riscv CROSS_COMPILE=riscv64-unknown-linux-gnu- O=build -sk -j30
no __ex_table in file: vmlinux
Failed to sort kernel tables
make[2]: *** [../scripts/Makefile.vmlinux:35: vmlinux] Error 1
make[2]: *** Deleting file 'vmlinux'
make[2]: Target '__default' not remade because of errors.
make[1]: *** [/home/conor/stuff/linux/Makefile:1250: vmlinux] Error 2
make[1]: Target '__all' not remade because of errors.
make: *** [Makefile:226: __sub-make] Error 2
make: Target '__all' not remade because of errors.
:(
> ---
> arch/riscv/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index c5e42cc37604..212ea28e346b 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -50,7 +50,7 @@ config RISCV
> select ARCH_WANT_LD_ORPHAN_WARN if !XIP_KERNEL
> select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
> select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
> - select BUILDTIME_TABLE_SORT if MMU
> + select BUILDTIME_TABLE_SORT
> select CLINT_TIMER if !MMU
> select CLONE_BACKWARDS
> select COMMON_CLK
> --
> 2.40.0
>
On Tue, Apr 11, 2023 at 10:37:36AM +0100, Conor Dooley wrote:
> Hey Jisheng,
>
> On Mon, Apr 10, 2023 at 12:43:06AM +0800, Jisheng Zhang wrote:
> > BUILDTIME_TABLE_SORT works for !MMU as well, so enable it.
> >
> > Tested on QEMU and FPGA.
> >
> > Signed-off-by: Jisheng Zhang <[email protected]>
>
> Fails to build for nommu_k210_defconfig:
>
> make ARCH=riscv CROSS_COMPILE=riscv64-unknown-linux-gnu- O=build -sk -j30
> no __ex_table in file: vmlinux
This failure log makes me carefully go through the ex_table mechanism
again. Now I knew where's the failure from and what should be done:
Because FUTEX is disabled in nommu_k210_defconfig. However, there's a
deeply hidden issue here: there should be no __ex_table section usage
at all in NOMMU case, becaue __ex_table usage relies on MMU to do the
*fixup*, so I need to patch the risc extable part instead.
Thanks
> Failed to sort kernel tables
> make[2]: *** [../scripts/Makefile.vmlinux:35: vmlinux] Error 1
> make[2]: *** Deleting file 'vmlinux'
> make[2]: Target '__default' not remade because of errors.
> make[1]: *** [/home/conor/stuff/linux/Makefile:1250: vmlinux] Error 2
> make[1]: Target '__all' not remade because of errors.
> make: *** [Makefile:226: __sub-make] Error 2
> make: Target '__all' not remade because of errors.
>
> :(
>
> > ---
> > arch/riscv/Kconfig | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> > index c5e42cc37604..212ea28e346b 100644
> > --- a/arch/riscv/Kconfig
> > +++ b/arch/riscv/Kconfig
> > @@ -50,7 +50,7 @@ config RISCV
> > select ARCH_WANT_LD_ORPHAN_WARN if !XIP_KERNEL
> > select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
> > select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU
> > - select BUILDTIME_TABLE_SORT if MMU
> > + select BUILDTIME_TABLE_SORT
> > select CLINT_TIMER if !MMU
> > select CLONE_BACKWARDS
> > select COMMON_CLK
> > --
> > 2.40.0
> >