diff options
Diffstat (limited to 'target/linux/x86/patches-3.18/001-x86-platform-Fix-Geode-LX-timekeeping-in-the-generic.patch')
| -rw-r--r-- | target/linux/x86/patches-3.18/001-x86-platform-Fix-Geode-LX-timekeeping-in-the-generic.patch | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/x86/patches-3.18/001-x86-platform-Fix-Geode-LX-timekeeping-in-the-generic.patch b/target/linux/x86/patches-3.18/001-x86-platform-Fix-Geode-LX-timekeeping-in-the-generic.patch deleted file mode 100644 index 8bd1699627..0000000000 --- a/target/linux/x86/patches-3.18/001-x86-platform-Fix-Geode-LX-timekeeping-in-the-generic.patch +++ /dev/null @@ -1,61 +0,0 @@ -From: David Woodhouse <dwmw2@infradead.org> -Date: Thu, 17 Sep 2015 10:16:54 +0100 -Subject: [PATCH] x86/platform: Fix Geode LX timekeeping in the generic x86 - build - -In 2007, commit 07190a08eef36 ("Mark TSC on GeodeLX reliable") -bypassed verification of the TSC on Geode LX. However, this code -(now in the check_system_tsc_reliable() function in -arch/x86/kernel/tsc.c) was only present if CONFIG_MGEODE_LX was -set. - -OpenWRT has recently started building its generic Geode target -for Geode GX, not LX, to include support for additional -platforms. This broke the timekeeping on LX-based devices, -because the TSC wasn't marked as reliable: -https://dev.openwrt.org/ticket/20531 - -By adding a runtime check on is_geode_lx(), we can also include -the fix if CONFIG_MGEODEGX1 or CONFIG_X86_GENERIC are set, thus -fixing the problem. - -Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> -Signed-off-by: Ingo Molnar <mingo@kernel.org> -Closes #20531 ---- - ---- a/arch/x86/kernel/tsc.c -+++ b/arch/x86/kernel/tsc.c -@@ -21,6 +21,7 @@ - #include <asm/hypervisor.h> - #include <asm/nmi.h> - #include <asm/x86_init.h> -+#include <asm/geode.h> - - unsigned int __read_mostly cpu_khz; /* TSC clocks / usec, not used here */ - EXPORT_SYMBOL(cpu_khz); -@@ -1004,15 +1005,17 @@ EXPORT_SYMBOL_GPL(mark_tsc_unstable); - - static void __init check_system_tsc_reliable(void) - { --#ifdef CONFIG_MGEODE_LX -- /* RTSC counts during suspend */ -+#if defined(CONFIG_MGEODEGX1) || defined(CONFIG_MGEODE_LX) || defined(CONFIG_X86_GENERIC) -+ if (is_geode_lx()) { -+ /* RTSC counts during suspend */ - #define RTSC_SUSP 0x100 -- unsigned long res_low, res_high; -+ unsigned long res_low, res_high; - -- rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high); -- /* Geode_LX - the OLPC CPU has a very reliable TSC */ -- if (res_low & RTSC_SUSP) -- tsc_clocksource_reliable = 1; -+ rdmsr_safe(MSR_GEODE_BUSCONT_CONF0, &res_low, &res_high); -+ /* Geode_LX - the OLPC CPU has a very reliable TSC */ -+ if (res_low & RTSC_SUSP) -+ tsc_clocksource_reliable = 1; -+ } - #endif - if (boot_cpu_has(X86_FEATURE_TSC_RELIABLE)) - tsc_clocksource_reliable = 1; |