[Bug 213419] Outdated limitation for powerpc in vdso(7)

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https://bugzilla.kernel.org/show_bug.cgi?id=213419

Alejandro Colomar (man-pages) (alx.manpages@xxxxxxxxx) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alx.manpages@xxxxxxxxx
         Resolution|---                         |DOCUMENTED

--- Comment #1 from Alejandro Colomar (man-pages) (alx.manpages@xxxxxxxxx) ---
Hi Christophe,

Thanks for the report.
I applied the following patch.

Thanks,

Alex

---
Author: Alejandro Colomar <alx.manpages@xxxxxxxxx>
Date:   Sat Jul 3 18:43:16 2021 +0200

    vdso.7: Remove outdated limitation for powerpc

    Christophe Leroy via Bugzilla:

    [
    https://man7.org/linux/man-pages/man7/vdso.7.html
    (as of today, flagged 2021-03-22)

    ppc/32 and ppc/64 sections both have the following note:

           The CLOCK_REALTIME_COARSE and CLOCK_MONOTONIC_COARSE clocks
           are not supported by the __kernel_clock_getres and
           __kernel_clock_gettime interfaces; the kernel falls back to
           the real system call

    This note has been wrong from quite some time now,
    since commit 654abc69ef2e
    ("powerpc/vdso32: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE")
    and commit 5c929885f1bb
    ("powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE")
    ]

    Reported-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
    Signed-off-by: Alejandro Colomar <alx.manpages@xxxxxxxxx>

diff --git a/man7/vdso.7 b/man7/vdso.7
index ef6bef5bd..1d527c38e 100644
--- a/man7/vdso.7
+++ b/man7/vdso.7
@@ -385,19 +385,6 @@ __kernel_sync_dicache_p5   LINUX_2.6.15
 .in
 .ft P
 \}
-.PP
-The
-.B CLOCK_REALTIME_COARSE
-and
-.B CLOCK_MONOTONIC_COARSE
-clocks are
-.I not
-supported by the
-.I __kernel_clock_getres
-and
-.I __kernel_clock_gettime
-interfaces;
-the kernel falls back to the real system call.
 .SS ppc/64 functions
 .\" See linux/arch/powerpc/kernel/vdso64/vdso64.lds.S
 The table below lists the symbols exported by the vDSO.
@@ -423,19 +410,6 @@ __kernel_sync_dicache_p5   LINUX_2.6.15
 .in
 .ft P
 \}
-.PP
-The
-.B CLOCK_REALTIME_COARSE
-and
-.B CLOCK_MONOTONIC_COARSE
-clocks are
-.I not
-supported by the
-.I __kernel_clock_getres
-and
-.I __kernel_clock_gettime
-interfaces;
-the kernel falls back to the real system call.
 .SS riscv functions
 .\" See linux/arch/riscv/kernel/vdso/vdso.lds.S
 The table below lists the symbols exported by the vDSO.

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