From: Vincenzo Frascino <vincenzo.frascino@arm.com>
To: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
linux-kselftest@vger.kernel.org
Cc: catalin.marinas@arm.com, will@kernel.org, paul.burton@mips.com,
tglx@linutronix.de, salyzyn@android.com, 0x7f454c46@gmail.com,
luto@kernel.org
Subject: [PATCH v2 4/8] lib: vdso: Remove VDSO_HAS_32BIT_FALLBACK
Date: Fri, 30 Aug 2019 14:58:58 +0100 [thread overview]
Message-ID: <20190830135902.20861-5-vincenzo.frascino@arm.com> (raw)
In-Reply-To: <20190830135902.20861-1-vincenzo.frascino@arm.com>
VDSO_HAS_32BIT_FALLBACK was introduced to address a regression which
caused seccomp to deny access to the applications to clock_gettime64()
and clock_getres64() because they are not enabled in the existing
filters.
The purpose of VDSO_HAS_32BIT_FALLBACK was to simplify the conditional
implementation of __cvdso_clock_get*time32() variants.
Now that all the architectures that support the generic vDSO library
have been converted to support the 32 bit fallbacks the conditional
can be removed.
Cc: Thomas Gleixner <tglx@linutronix.de>
CC: Andy Lutomirski <luto@kernel.org>
References: c60a32ea4f45 ("lib/vdso/32: Provide legacy syscall fallbacks")
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
---
lib/vdso/gettimeofday.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index a86e89e6dedc..2c4b311c226d 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c
@@ -126,13 +126,8 @@ __cvdso_clock_gettime32(clockid_t clock, struct old_timespec32 *res)
ret = __cvdso_clock_gettime_common(clock, &ts);
-#ifdef VDSO_HAS_32BIT_FALLBACK
if (unlikely(ret))
return clock_gettime32_fallback(clock, res);
-#else
- if (unlikely(ret))
- ret = clock_gettime_fallback(clock, &ts);
-#endif
if (likely(!ret)) {
res->tv_sec = ts.tv_sec;
@@ -240,13 +235,8 @@ __cvdso_clock_getres_time32(clockid_t clock, struct old_timespec32 *res)
ret = __cvdso_clock_getres_common(clock, &ts);
-#ifdef VDSO_HAS_32BIT_FALLBACK
if (unlikely(ret))
return clock_getres32_fallback(clock, res);
-#else
- if (unlikely(ret))
- ret = clock_getres_fallback(clock, &ts);
-#endif
if (likely(!ret)) {
res->tv_sec = ts.tv_sec;
--
2.23.0
next prev parent reply other threads:[~2019-08-30 13:59 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-30 13:58 [PATCH v2 0/8] vdso: Complete the conversion to 32bit syscalls Vincenzo Frascino
2019-08-30 13:58 ` [PATCH v2 1/8] arm64: compat: vdso: Expose BUILD_VDSO32 Vincenzo Frascino
2019-09-03 14:36 ` Vincenzo Frascino
2019-09-03 14:38 ` Will Deacon
2019-08-30 13:58 ` [PATCH v2 2/8] lib: vdso: Build 32 bit specific functions in the right context Vincenzo Frascino
2020-01-13 22:28 ` Thomas Gleixner
2020-01-14 9:33 ` Thomas Gleixner
2020-01-14 10:15 ` Vincenzo Frascino
2020-01-14 10:37 ` Thomas Gleixner
2020-01-14 10:41 ` Vincenzo Frascino
2020-01-14 11:15 ` Vincenzo Frascino
2019-08-30 13:58 ` [PATCH v2 3/8] mips: compat: vdso: Use legacy syscalls as fallback Vincenzo Frascino
2019-09-03 13:52 ` Paul Burton
2019-09-03 14:20 ` Vincenzo Frascino
2019-09-03 21:00 ` Paul Burton
2019-08-30 13:58 ` Vincenzo Frascino [this message]
2019-08-30 13:58 ` [PATCH v2 5/8] lib: vdso: Remove checks on return value for 32 bit vDSO Vincenzo Frascino
2019-08-30 14:16 ` Vincenzo Frascino
2019-08-30 13:59 ` [PATCH v2 6/8] arm64: compat: vdso: Remove unused VDSO_HAS_32BIT_FALLBACK Vincenzo Frascino
2019-08-30 13:59 ` [PATCH v2 7/8] mips: " Vincenzo Frascino
2019-09-03 14:46 ` Paul Burton
2019-09-03 14:51 ` Vincenzo Frascino
2019-08-30 13:59 ` [PATCH v2 8/8] x86: " Vincenzo Frascino
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