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Message-ID: <3ae7f595-0a15-0584-198e-b32fe3e3ea57@arm.com>
Date: Tue, 25 Jun 2019 00:16:55 +0100
From: Vincenzo Frascino <vincenzo.frascino@....com>
To: Paul Burton <paul.burton@...s.com>,
Thomas Gleixner <tglx@...utronix.de>
Cc: "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
LAK <linux-arm-kernel@...ts.infradead.org>,
LKML <linux-kernel@...r.kernel.org>,
"linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
"linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
Arnd Bergmann <arnd@...db.de>,
Russell King <linux@...linux.org.uk>,
Ralf Baechle <ralf@...ux-mips.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Mark Salyzyn <salyzyn@...roid.com>,
Peter Collingbourne <pcc@...gle.com>,
Shuah Khan <shuah@...nel.org>,
Dmitry Safonov <0x7f454c46@...il.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Huw Davies <huw@...eweavers.com>,
Shijith Thotton <sthotton@...vell.com>,
Andre Przywara <andre.przywara@....com>,
Dmitry Safonov <dima@...sta.com>,
Andrei Vagin <avagin@...nvz.org>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andy Lutomirski <luto@...nel.org>,
Michael Kelley <mikelley@...rosoft.com>,
Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH v7 00/25] Unify vDSOs across more architectures
Hi Paul,
thank you for your review.
On 6/24/19 7:41 PM, Paul Burton wrote:
> Hello,
>
> On Mon, Jun 24, 2019 at 02:34:24AM +0200, Thomas Gleixner wrote:
>> I did not merge the ARM and MIPS parts as they lack any form of
>> acknowlegment from their maintainers. Please talk to those folks. If they
>> ack/review the changes then I can pick them up and they go into 5.3 or they
>> have to go in a later cycle. Nevertheless it was well worth the trouble to
>> have those conversions done to confirm that the new common library fits a
>> bunch of different architectures.
>
> Apologies for not being more proactive on the MIPS front here; life &
> work are extra busy at the moment... But thanks Vincenzo for including
> MIPS in the work here.
>
No problem.
> Unfortunately after applying the 3 MIPS patches (19-21) atop the current
> tip.git timers/vdso branch at ecf9db3d1f1a ("x86/vdso: Give the
> [ph]vclock_page declarations real types") I see build failures for the
> o32 compat VDSO, shown below. This is using the gcc 8.1.0 mips-linux
> toolchain from here:
>
> https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/x86_64-gcc-8.1.0-nolibc-mips-linux.tar.xz
>
> Configuration is 64r6el_defconfig. The following helps remove the
> implicit declaration warnings (and eww to including C files via CFLAGS),
> but it still doesn't build:
>
> diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
> index 95df49402a53..aa38049bdb24 100644
> --- a/arch/mips/vdso/Makefile
> +++ b/arch/mips/vdso/Makefile
> @@ -36,6 +36,8 @@ aflags-vdso := $(ccflags-vdso) \
>
> ifneq ($(c-gettimeofday-y),)
> CFLAGS_vgettimeofday.o = -include $(c-gettimeofday-y)
> +CFLAGS_vgettimeofday-o32.o = -include $(c-gettimeofday-y)
> +CFLAGS_vgettimeofday-n32.o = -include $(c-gettimeofday-y)
> endif
>
> CFLAGS_REMOVE_vgettimeofday.o = -pg
>
> So the MIPS bits here need more work.
>
I admit, the one proposed was a nice challenge and it took me a while to
understand the differences in between the O32, N32 and N64 binaries and what was
causing the reported issue.
In the end I concluded that all the errors seen here depend on the fact that I
tested my vdso implementation on MIPS32el only (as stated in the cover letter)
and that when I tried to compile a 32BIT binary on a 64BIT configuration I did
it wrongly for two reasons, for N32 and O32 binaries:
- we need to undefine CONFIG_64BIT and define CONFIG_32BIT
- we need to define CONFIG_GENERIC_ATOMIC64
I have a fix for this (patch in attachment), but I do not have the hardware to
test it. If you could provide some feedback would be appreciated (really want to
see MIPS merged with the other archs in 5.3 :) ).
> Thanks,
> Paul
>
> CC arch/mips/vdso/vgettimeofday-o32.o
> In file included from ./include/linux/bitops.h:19,
> from ./include/linux/kernel.h:12,
> from ./include/linux/list.h:9,
> from ./include/linux/preempt.h:11,
> from ./include/linux/spinlock.h:51,
> from ./include/linux/seqlock.h:36,
> from ./include/linux/time.h:6,
> from arch/mips/vdso/vgettimeofday.c:10:
> ./arch/mips/include/asm/bitops.h: In function '__fls':
> ./arch/mips/include/asm/bitops.h:518:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << 32))) {
> ^~
> ./arch/mips/include/asm/bitops.h:520:8: warning: left shift count >= width of type [-Wshift-count-overflow]
> word <<= 32;
> ^~~
> ./arch/mips/include/asm/bitops.h:523:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << (BITS_PER_LONG-16)))) {
> ^~
> ./arch/mips/include/asm/bitops.h:527:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << (BITS_PER_LONG-8)))) {
> ^~
> ./arch/mips/include/asm/bitops.h:531:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << (BITS_PER_LONG-4)))) {
> ^~
> ./arch/mips/include/asm/bitops.h:535:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << (BITS_PER_LONG-2)))) {
> ^~
> ./arch/mips/include/asm/bitops.h:539:21: warning: left shift count >= width of type [-Wshift-count-overflow]
> if (!(word & (~0ul << (BITS_PER_LONG-1))))
> ^~
> In file included from ./arch/mips/include/asm/mmiowb.h:5,
> from ./include/linux/spinlock.h:60,
> from ./include/linux/seqlock.h:36,
> from ./include/linux/time.h:6,
> from arch/mips/vdso/vgettimeofday.c:10:
> ./arch/mips/include/asm/io.h: In function 'phys_to_virt':
> ./arch/mips/include/asm/io.h:136:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> return (void *)(address + PAGE_OFFSET - PHYS_OFFSET);
> ^
> In file included from ./include/linux/bitops.h:5,
> from ./include/linux/kernel.h:12,
> from ./include/linux/list.h:9,
> from ./include/linux/preempt.h:11,
> from ./include/linux/spinlock.h:51,
> from ./include/linux/seqlock.h:36,
> from ./include/linux/time.h:6,
> from arch/mips/vdso/vgettimeofday.c:10:
> ./arch/mips/include/asm/mips-cm.h: In function 'mips_cm_max_vp_width':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:152:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MAJOR GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:156:22: note: in expansion of macro 'CM_GCR_REV_MAJOR'
> (((major) << __ffs(CM_GCR_REV_MAJOR)) | \
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:161:23: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3 CM_ENCODE_REV(8, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:367:28: note: in expansion of macro 'CM_REV_CM3'
> if (mips_cm_revision() >= CM_REV_CM3)
> ^~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:153:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MINOR GENMASK(7, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:157:22: note: in expansion of macro 'CM_GCR_REV_MINOR'
> ((minor) << __ffs(CM_GCR_REV_MINOR)))
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:161:23: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3 CM_ENCODE_REV(8, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:367:28: note: in expansion of macro 'CM_REV_CM3'
> if (mips_cm_revision() >= CM_REV_CM3)
> ^~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:239:36: note: in expansion of macro 'GENMASK'
> #define CM_GCR_SYS_CONFIG2_MAXVPW GENMASK(3, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:368:35: note: in expansion of macro 'CM_GCR_SYS_CONFIG2_MAXVPW'
> return read_gcr_sys_config2() & CM_GCR_SYS_CONFIG2_MAXVPW;
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:293:33: note: in expansion of macro 'GENMASK'
> #define CM_GCR_Cx_CONFIG_PVPE GENMASK(9, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:376:32: note: in expansion of macro 'CM_GCR_Cx_CONFIG_PVPE'
> cfg = read_gcr_cl_config() & CM_GCR_Cx_CONFIG_PVPE;
> ^~~~~~~~~~~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:293:33: note: in expansion of macro 'GENMASK'
> #define CM_GCR_Cx_CONFIG_PVPE GENMASK(9, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:377:24: note: in expansion of macro 'CM_GCR_Cx_CONFIG_PVPE'
> return (cfg >> __ffs(CM_GCR_Cx_CONFIG_PVPE)) + 1;
> ^~~~~~~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h: In function 'mips_cps_numclusters':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:152:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MAJOR GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:156:22: note: in expansion of macro 'CM_GCR_REV_MAJOR'
> (((major) << __ffs(CM_GCR_REV_MAJOR)) | \
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:117:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5)
> ^~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:153:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MINOR GENMASK(7, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:157:22: note: in expansion of macro 'CM_GCR_REV_MINOR'
> ((minor) << __ffs(CM_GCR_REV_MINOR)))
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:117:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5)
> ^~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:133:37: note: in expansion of macro 'GENMASK'
> #define CM_GCR_CONFIG_NUM_CLUSTERS GENMASK(29, 23)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:120:37: note: in expansion of macro 'CM_GCR_CONFIG_NUM_CLUSTERS'
> num_clusters = read_gcr_config() & CM_GCR_CONFIG_NUM_CLUSTERS;
> ^~~~~~~~~~~~~~~~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:133:37: note: in expansion of macro 'GENMASK'
> #define CM_GCR_CONFIG_NUM_CLUSTERS GENMASK(29, 23)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:121:25: note: in expansion of macro 'CM_GCR_CONFIG_NUM_CLUSTERS'
> num_clusters >>= __ffs(CM_GCR_CONFIG_NUM_CLUSTERS);
> ^~~~~~~~~~~~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h: In function 'mips_cps_cluster_config':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:152:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MAJOR GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:156:22: note: in expansion of macro 'CM_GCR_REV_MAJOR'
> (((major) << __ffs(CM_GCR_REV_MAJOR)) | \
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:137:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5) {
> ^~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:153:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MINOR GENMASK(7, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:157:22: note: in expansion of macro 'CM_GCR_REV_MINOR'
> ((minor) << __ffs(CM_GCR_REV_MINOR)))
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:137:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5) {
> ^~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h: In function 'mips_cps_numcores':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:135:32: note: in expansion of macro 'GENMASK'
> #define CM_GCR_CONFIG_PCORES GENMASK(7, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:172:50: note: in expansion of macro 'CM_GCR_CONFIG_PCORES'
> return (mips_cps_cluster_config(cluster) + 1) & CM_GCR_CONFIG_PCORES;
> ^~~~~~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h: In function 'mips_cps_numiocu':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:134:33: note: in expansion of macro 'GENMASK'
> #define CM_GCR_CONFIG_NUMIOCU GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:189:48: note: in expansion of macro 'CM_GCR_CONFIG_NUMIOCU'
> num_iocu = mips_cps_cluster_config(cluster) & CM_GCR_CONFIG_NUMIOCU;
> ^~~~~~~~~~~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:134:33: note: in expansion of macro 'GENMASK'
> #define CM_GCR_CONFIG_NUMIOCU GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:190:21: note: in expansion of macro 'CM_GCR_CONFIG_NUMIOCU'
> num_iocu >>= __ffs(CM_GCR_CONFIG_NUMIOCU);
> ^~~~~~~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h: In function 'mips_cps_numvps':
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:152:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MAJOR GENMASK(15, 8)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:156:22: note: in expansion of macro 'CM_GCR_REV_MAJOR'
> (((major) << __ffs(CM_GCR_REV_MAJOR)) | \
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:216:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5) {
> ^~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:153:28: note: in expansion of macro 'GENMASK'
> #define CM_GCR_REV_MINOR GENMASK(7, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cm.h:157:22: note: in expansion of macro 'CM_GCR_REV_MINOR'
> ((minor) << __ffs(CM_GCR_REV_MINOR)))
> ^~~~~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cm.h:162:25: note: in expansion of macro 'CM_ENCODE_REV'
> #define CM_REV_CM3_5 CM_ENCODE_REV(9, 0)
> ^~~~~~~~~~~~~
> ./arch/mips/include/asm/mips-cps.h:216:27: note: in expansion of macro 'CM_REV_CM3_5'
> if (mips_cm_revision() < CM_REV_CM3_5) {
> ^~~~~~~~~~~~
> ./include/linux/bits.h:20:39: warning: right shift count >= width of type [-Wshift-count-overflow]
> (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
> ^~
> ./arch/mips/include/asm/mips-cm.h:293:33: note: in expansion of macro 'GENMASK'
> #define CM_GCR_Cx_CONFIG_PVPE GENMASK(9, 0)
> ^~~~~~~
> ./arch/mips/include/asm/mips-cps.h:233:21: note: in expansion of macro 'CM_GCR_Cx_CONFIG_PVPE'
> return (cfg + 1) & CM_GCR_Cx_CONFIG_PVPE;
> ^~~~~~~~~~~~~~~~~~~~~
> arch/mips/vdso/vgettimeofday.c: In function '__vdso_clock_gettime':
> arch/mips/vdso/vgettimeofday.c:17:9: error: implicit declaration of function '__cvdso_clock_gettime32'; did you mean '__vdso_clock_gettime'? [-Werror=implicit-function-declaration]
> return __cvdso_clock_gettime32(clock, ts);
> ^~~~~~~~~~~~~~~~~~~~~~~
> __vdso_clock_gettime
> arch/mips/vdso/vgettimeofday.c: In function '__vdso_gettimeofday':
> arch/mips/vdso/vgettimeofday.c:23:9: error: implicit declaration of function '__cvdso_gettimeofday'; did you mean '__vdso_gettimeofday'? [-Werror=implicit-function-declaration]
> return __cvdso_gettimeofday(tv, tz);
> ^~~~~~~~~~~~~~~~~~~~
> __vdso_gettimeofday
> arch/mips/vdso/vgettimeofday.c: In function '__vdso_clock_getres':
> arch/mips/vdso/vgettimeofday.c:29:9: error: implicit declaration of function '__cvdso_clock_getres_time32'; did you mean '__vdso_clock_gettime'? [-Werror=implicit-function-declaration]
> return __cvdso_clock_getres_time32(clock_id, res);
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> __vdso_clock_gettime
> arch/mips/vdso/vgettimeofday.c: In function '__vdso_clock_gettime64':
> arch/mips/vdso/vgettimeofday.c:35:9: error: implicit declaration of function '__cvdso_clock_gettime'; did you mean '__vdso_clock_gettime'? [-Werror=implicit-function-declaration]
> return __cvdso_clock_gettime(clock, ts);
> ^~~~~~~~~~~~~~~~~~~~~
> __vdso_clock_gettime
> cc1: some warnings being treated as errors
> make[1]: *** [arch/mips/vdso/Makefile:148: arch/mips/vdso/vgettimeofday-o32.o] Error 1
> make: *** [Makefile:1746: arch/mips/vdso/vgettimeofday-o32.o] Error 2
>
--
Regards,
Vincenzo
View attachment "0001-mips-Fix-o32-and-n32-vDSO-compilation.patch" of type "text/x-patch" (2155 bytes)
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