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xeno74 wrote: Tue Oct 11, 2022 3:16 pm Hi All,

I successfully compiled the alpha3 with the first PowerPC updates yesterday.

Unfortunately this kernel is really dangerous. Many things for example Network Manager and LightDM don't work anymore and produced several gigabyte of config files till the partition has been filled.

I deleted some files like the resolv.conf that had a size over 200 GB!

Unfortunately, MintPPC was still damaged. For example LightDM doesn't work anymore and the MATE desktop doesn't display any icons anymore because Caja wasn't able to reserve memory anymore.

In this case, bisecting isn't an option and I have to wait some weeks. It is really difficult to find the issue if the userland will damaged again and again.

Cheers,
Christian

Andrew wrote: Could you try with
https://patchwork.ozlabs.org/project/li ... gmail.com/
to see if your issues are related to that?

Andrew

--
Andrew Donnellan OzLabs, ADL Canberra
[email protected] IBM Australia Limited

Christophe wrote: As far as I understand, it was already correct for 32-bit userlands with 64 bit kernels, aka compat.

The patch applies the same approach for 32 bit kernels, as explained in the commit message : "Fix this by having 32-bit kernels share those syscall definitions with compat."

Christophe

• Some PowerPC fixes
• X5000: dpaa-v2 patch because of the DPAA issue on Ubuntu 16.04
• These kernels have been compiled in an updated Ubuntu cross compiling environment Docker container (version 20.04.5 LTS including new firmwares version 1.187.33)
• Linux git log

xeno74 wrote: Wed Oct 26, 2022 6:29 am Here is the stable longterm kernel 5.10.149 for the X1000 and X5000.

@Roland
Could you please test this kernel? I want to make sure that it works for you.

Roland wrote: Wed Oct 26, 2022 11:09 am Works ok here... Thank you .

$ ssh [email protected]
[email protected]'s password: 
Last login: Sat Oct 29 11:09:50 2022 from 192.168.178.94
[amigaone@void-ppc ~]$ uname -a
Linux void-ppc.a-eon.tld 6.1.0-rc2_A-EON_X5000 #1 SMP Sat Oct 29 07:57:15 CEST 2022 ppc64 GNU/Linux
[amigaone@void-ppc ~]$ df -Th
Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/root      ext4      118G  118G     0 100% /
devtmpfs       devtmpfs  3.9G     0  3.9G   0% /dev
run            tmpfs     3.9G  1.3M  3.9G   1% /run
shm            tmpfs     3.9G     0  3.9G   0% /dev/shm
cgroup         tmpfs     3.9G     0  3.9G   0% /sys/fs/cgroup
tmpfs          tmpfs     3.9G  4.0K  3.9G   1% /tmp
tmpfs          tmpfs     793M     0  793M   0% /run/user/1000

xeno74 wrote: Tue Oct 11, 2022 3:16 pm Hi All,

I successfully compiled the alpha3 with the first PowerPC updates yesterday.

Unfortunately this kernel is really dangerous. Many things for example Network Manager and LightDM don't work anymore and produced several gigabyte of config files till the partition has been filled.

I deleted some files like the resolv.conf that had a size over 200 GB!

Unfortunately, MintPPC was still damaged. For example LightDM doesn't work anymore and the MATE desktop doesn't display any icons anymore because Caja wasn't able to reserve memory anymore.

In this case, bisecting isn't an option and I have to wait some weeks. It is really difficult to find the issue if the userland will damaged again and again.

Cheers,
Christian

Git bisect is like a little wizard that walks you through recent commits, asks you if they are good or bad, and narrows down the broken commit.
Git bisect starts with the midpoint commit. The midpoint commit is between the initial good commit and the initial bad commit.
If the midpoint commit was good, you know the commit that introduced the change is between your midpoint and the initial bad commit.
If the midpoint commit was bad, you know the commit that introduced the change is between your midpoint and the initial good commit.
After that git bisect selects a new midpoint in the area where the commit was bad. And this is repeated over and over again till the bad commit has been found.

1. Code: Select all

   git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a

   or

   Code: Select all

   git clone --depth=1 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git a

2. Code: Select all

   git bisect start

3. Code: Select all

   git bisect good 4fe89d07dcc2804c8b562f6c7896a45643d34b2f

   (Good: Linux 6.0)

4. Code: Select all

   git bisect bad 9abf2313adc1ca1b6180c508c25f22f9395cc780

   (Bad: Linux 6.1-rc1
   Output:

   Code: Select all

   Bisecting: 6125 revisions left to test after this (roughly 13 steps)
   [18fd049731e67651009f316195da9281b756f2cf] Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

5. git bisect good
   Output:

   Code: Select all

   Bisecting: 3062 revisions left to test after this (roughly 12 steps)
   [ab0c23b535f3f9d8345d8ad4c18c0a8594459d55] MAINTAINERS: add RISC-V's patchwork

6. git bisect good
   Output:

   Code: Select all

   Bisecting: 1527 revisions left to test after this (roughly 11 steps)
   [27bc50fc90647bbf7b734c3fc306a5e61350da53] Merge tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

7. git bisect bad
   Output:

   Code: Select all

   Bisecting: 766 revisions left to test after this (roughly 10 steps)
   [ada3bfb6492a6d0d3eca50f3b61315fe032efc72] Merge tag 'tpmdd-next-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd

8. git bisect bad
   Output:

   Code: Select all

   Bisecting: 379 revisions left to test after this (roughly 9 steps)
   [7f6dcffb44ad246e3211c6aeaba8a625e2766836] Merge tag 'sched-rt-2022-10-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
   

9. git bisect bad
   Output:

   Code: Select all

   Bisecting: 193 revisions left to test after this (roughly 8 steps)
   [9511b5a033e99070ae1f54cd3c0aa3d10eae7c26] Merge branch 'topic/ppc-kvm' into next

10. git bisect bad
    Output:

    Code: Select all

    Bisecting: 96 revisions left to test after this (roughly 7 steps)
    [b997b2f57cae396448bb62c428efa4b112dd90ed] powerpc/mm: Reduce redundancy in pgtable.h

11. git bisect good
    Output:

    Code: Select all

    Bisecting: 48 revisions left to test after this (roughly 6 steps)
    [b19448fe846baad689ff51a991ebfc74b4b5e0a8] powerpc: Add support for early debugging via Serial 16550 console

12. git bisect bad
    Output:

    Code: Select all

    Bisecting: 23 revisions left to test after this (roughly 5 steps)
    [6556fd1a1e9fcd180348c4368d2387bdc6a17613] powerpc: Cleanup idle for e500

13. git bisect good
    Output:

    Code: Select all

    Bisecting: 11 revisions left to test after this (roughly 4 steps)
    [c2e7a19827eec443a7cbe85e8d959052412d6dc3] powerpc: Use generic fallocate compatibility syscall

14. git bisect bad
    Output:

    Code: Select all

    Bisecting: 5 revisions left to test after this (roughly 3 steps)
    [2b1dac4b5f97ea88fb01dfcab7fc24500b5dea95] powerpc/64s: Use {ZEROIZE,SAVE,REST}_GPRS macros in sc, scv 0 handlers

15. git bisect good
    Output:

    Code: Select all

    Bisecting: 2 revisions left to test after this (roughly 2 steps)
    [620f5c59c8617d623428c03414a022fca4e9eea2] powerpc/64s: Fix comment on interrupt handler prologue

16. git bisect good
    Output:

    Code: Select all

    Bisecting: 0 revisions left to test after this (roughly 1 step)
    [43d5de2b67d7f4a8478820005152f7f689608f2f] asm-generic: compat: Support BE for long long args in 32-bit ABIs

17. git bisect good
    Output:

    Code: Select all

    c2e7a19827eec443a7cbe85e8d959052412d6dc3 is the first bad commit
    commit c2e7a19827eec443a7cbe85e8d959052412d6dc3
    Author: Rohan McLure <[email protected]>
    Date:   Wed Sep 21 16:55:50 2022 +1000
    
        powerpc: Use generic fallocate compatibility syscall
    
        The powerpc fallocate compat syscall handler is identical to the
        generic implementation provided by commit 59c10c52f573f ("riscv:
        compat: syscall: Add compat_sys_call_table implementation"), and as
        such can be removed in favour of the generic implementation.
    
        A future patch series will replace more architecture-defined syscall
        handlers with generic implementations, dependent on introducing generic
        implementations that are compatible with powerpc and arm's parameter
        reorderings.
    
        Reported-by: Arnd Bergmann <[email protected]>
        Signed-off-by: Rohan McLure <[email protected]>
        Reviewed-by: Arnd Bergmann <[email protected]>
        Signed-off-by: Michael Ellerman <[email protected]>
        Link: https://lore.kernel.org/r/[email protected]
    
     arch/powerpc/include/asm/syscalls.h | 2 --
     arch/powerpc/include/asm/unistd.h   | 1 +
     arch/powerpc/kernel/sys_ppc32.c     | 7 -------
     3 files changed, 1 insertion(+), 9 deletions(-)
    

git revert c2e7a19827eec443a7cbe85e8d959052412d6dc3

diff -rupN a b > syscall.patch

diff -rupN a/arch/powerpc/include/asm/syscalls.h b/arch/powerpc/include/asm/syscalls.h
--- a/arch/powerpc/include/asm/syscalls.h       2022-10-30 13:53:28.956001116 +0100
+++ b/arch/powerpc/include/asm/syscalls.h       2022-10-30 13:55:39.166300756 +0100
@@ -15,6 +15,7 @@
 #include <asm/unistd.h>
 #include <asm/ucontext.h>

+long compat_sys_fallocate(int fd, int mode, u32 offset1, u32 offset2, u32 len1, u32 len2);
 #ifndef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
 long sys_ni_syscall(void);
 #else
diff -rupN a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
--- a/arch/powerpc/include/asm/unistd.h 2022-10-30 13:53:28.957001103 +0100
+++ b/arch/powerpc/include/asm/unistd.h 2022-10-30 13:56:44.851441888 +0100
@@ -45,7 +45,6 @@
 #define __ARCH_WANT_SYS_UTIME
 #define __ARCH_WANT_SYS_NEWFSTATAT
 #define __ARCH_WANT_COMPAT_STAT
-#define __ARCH_WANT_COMPAT_FALLOCATE
 #define __ARCH_WANT_COMPAT_SYS_SENDFILE
 #endif
 #define __ARCH_WANT_SYS_FORK
diff -rupN a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
--- a/arch/powerpc/kernel/sys_ppc32.c   2022-10-30 13:53:28.967000972 +0100
+++ b/arch/powerpc/kernel/sys_ppc32.c   2022-10-30 13:58:28.993078689 +0100
@@ -97,6 +97,13 @@ PPC32_SYSCALL_DEFINE4(ppc_truncate64,
        return ksys_truncate(path, merge_64(len1, len2));
 }

+long compat_sys_fallocate(int fd, int mode, u32 offset1, u32 offset2,
+                                    u32 len1, u32 len2)
+{
+       return ksys_fallocate(fd, mode, merge_64(offset1, offset2),
+                            merge_64(len1, len2));
+}
+
 PPC32_SYSCALL_DEFINE4(ppc_ftruncate64,
                       unsigned int, fd, u32, reg4,
                       unsigned long, len1, unsigned long, len2)

• Linux 6.1-rc2 Released: It's "Unusually Large" -- phoronix.com
• Release announcement
• syscall patch because of the issue with filling the file system to 100%
• PowerPC updates 6.1-1 (including PASEMI PCI and I2C updates)
• PowerPC fixes 6.1-2
• Linux 6.1 To Allow Faster File Sharing Between Host & Guests With 9P VirtIO Optimization -- phoronix.com
• 9p updates
• X5000: dpaa-v9 patch because of the DPAA issue on Ubuntu 16.04
• Linux Git log
• Phoronix articles, reviews and news stories covering Linux 6.1