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* [PATCH v22 00/12] Add 32 bit VDSO time function support
@ 2014-03-03 21:12 Stefani Seibold
  2014-03-03 21:12 ` [Patch v22 01/12] x86: Make vsyscall_gtod_data handling x86 generic Stefani Seibold
                   ` (10 more replies)
  0 siblings, 11 replies; 25+ messages in thread
From: Stefani Seibold @ 2014-03-03 21:12 UTC (permalink / raw)
  To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
	john.stultz, luto, xemul, gorcunov, andriy.shevchenko
  Cc: Martin.Runge, Andreas.Brief, Stefani Seibold

This patch add the functions vdso_gettimeofday(), vdso_clock_gettime()
and vdso_time() to the 32 bit VDSO.

The reason to do this was to get a fast reliable time stamp. Many developers
uses TSC to get a fast time stamp, without knowing the pitfalls. VDSO
time functions a fast and a reliable way, because the kernel knows the
best time source and the P- and C-state of the CPU.

The helper library to use the VDSO functions can be download at
http://http://seibold.net/vdso.c
The libary is very small, only 228 lines of code. Compile it with
gcc -Wall -O3 -fpic vdso.c -lrt -shared -o libvdso.so
and use it with LD_PRELOAD=<path>/libvdso.so

There is also a patch http://seibold.net/glibc.patch for glibc 2.19 which also
works for glibc 2.18.  This patch must be integrated into glibc.

Some linux 32 bit kernel benchmark results (all measurements are in nano
seconds):

Intel(R) Celeron(TM) CPU 400MHz

Average time kernel call:
 gettimeofday(): 1039
 clock_gettime(): 1578
 time(): 526
Average time VDSO call:
 gettimeofday(): 378
 clock_gettime(): 303
 time(): 60

Celeron(R) Dual-Core CPU T3100 1.90GHz

Average time kernel call:
 gettimeofday(): 209
 clock_gettime(): 406
 time(): 135
Average time VDSO call:
 gettimeofday(): 51
 clock_gettime(): 43
 time(): 10

So you can see a performance increase between 4 and 13, depending on the
CPU and the function.

The address layout of the VDSO has changed, because there is no fixed
address space available on a x86 32 bit kernel, despite the name. Because
someone decided to add an offset to the __FIXADDR_TOP for virtualization.

Also the IA32 Emulation uses the whole 4 GB address space, so there is no
fixed address available.

This was the reason not depend on this kind of address and change the layout
of the VDSO. The VDSO for a 32 bit application has now three pages:

^ Higher Address
|
+----------------------------------------+
+ VDSO page (includes code) ro+x         +
+----------------------------------------+
+ VVAR page (export kernel variables) ro +
+----------------------------------------+
+ HPET page (mapped registers) ro 
+----------------------------------------+
|
^ Lower Address

The VDSO page for a 32 bit resided still on 0xffffe000, the the VVAR and
HPET page are mapped before.

In the non compat mode the VMA of the VDSO is now 3 pages for a 32 bit kernel.
So this decrease the available logical address room by 2 pages.

The patch is against kernel 3.14 (e7651b819e90da924991d727d3c007200a18670d)

Changelog:
25.11.2012 - first release and proof of concept for linux 3.4
11.12.2012 - Port to linux 3.7 and code cleanup
12.12.2012 - fixes suggested by Andy Lutomirski
           - fixes suggested by John Stultz
           - use call VDSO32_vsyscall instead of int 80
           - code cleanup
17.12.2012 - support for IA32_EMULATION, this includes
             - code cleanup
             - include cleanup to fix compile warnings and errors
             - move out seqcount from seqlock, enable use in VDSO
             - map FIXMAP and HPET into the 32 bit address space
18.12.2012 - split into separate patches
30.01.2014 - revamp the code
             - code clean up
             - VDSO layout changed
             - no fixed addresses
             - port to 3.14
01.02.2014 - code cleanup
02.02.2014 - code cleanup
             - split into more patches
             - use HPET_COUNTER instead of hard coded value
             - fix changelog to the right year ;-)
02.02.2014 - reverse the mapping, this make the new VDSO 32 bit support
             full compatible.
03.02.2014 - code cleanup
             - fix comment
             - fix ABI break in vdso32.lds.S
04.02.2014 - revamp IA32 emulation support
             - introduce VVAR macro
             - rearranged vsyscall_gtod_data struture for IA32 emulation support
             - code cleanup
05.02.2014 - revamp IA32 emulation support
             - replace seqcount_t by an unsigned, to make the vsyscall_gtod_data
               structure independed of kernel config and functions.
08.02.2014 - revamp IA32 emulation support
             - replace all internal structures by fix size elements
10.02.2014 - code cleanup
             - add commets
             - revamp inline assembly
12.02.2014 - add conditional fixmap of vvar and hpet pages for 32 bit kernel
14.02.2014 - fix CONFIG_PARAVIRT_CLOCK, which is not supported in 32 bit VDSO
15.02.2014 - fix tsc
             code cleanup
             tested make ARCH=i386 allyesconfig and make allyesconfig
16.02.2014 - code cleanup
             - fix all C=1 warnings, also some one not introduced by this patch
             - hack to fix C=1 32 bit VDSO spinlock for a 64 bit kernel
             - fix VDSO Makefile for newer gcc
             tested for gcc 4.3.4 and 4.8.1
             tested ARCH=i386 allyesconfig, defconfig and allmodconfig
             tested X86_64 allyesconfig, defconfig and allmodconfig
17.02.2014 - In case of a 32 bit VDSO for a 64 bit kernel fake a 32 bit kernel
             configuration.
19.02.2014 - Add missing #undef and #define to fake proper 32 bit kernel config
             Add a missing #ifdef CONFIG_HPET_TIMER
             tested again ARCH=i386 allyesconfig, defconfig and allmodconfig
             tested again ARCH=X86_64 allyesconfig, defconfig and allmodconfig
02.03.2014 - Add fixes suggested by Andy Lutomirski
             - Patch alternatives in the 32 bit VDSO
	     - Use the default ABI for the 32 bit VDSO
	     - Inline the CLOCK MONOTONIC VDSO code
	     - Zero pad the VVAR page
	     - fix "patch alternatives" compile for 32 bit kernel
03.03.2014 - Add glibc.patch http://seibold.net/glibc.patch
             Add reviewed-by tags

^ permalink raw reply	[flat|nested] 25+ messages in thread
* [PATCH v23 09/13] x86, vdso: Add 32 bit VDSO time support for 32 bit kernel
@ 2014-03-17 22:22 Stefani Seibold
  2014-03-18 21:29 ` [tip:x86/vdso] " tip-bot for Stefani Seibold
  0 siblings, 1 reply; 25+ messages in thread
From: Stefani Seibold @ 2014-03-17 22:22 UTC (permalink / raw)
  To: gregkh, linux-kernel, x86, tglx, mingo, hpa, ak, aarcange,
	john.stultz, luto, xemul, gorcunov, andriy.shevchenko
  Cc: Martin.Runge, Andreas.Brief, Stefani Seibold

This patch add the time support for 32 bit a VDSO to a 32 bit kernel.

For 32 bit programs running on a 32 bit kernel, the same mechanism is
used as for 64 bit programs running on a 64 bit kernel.

Reviewed-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Stefani Seibold <stefani@seibold.net>
---
 arch/x86/include/asm/vdso.h           |  5 +++
 arch/x86/include/asm/vdso32.h         | 11 +++++
 arch/x86/vdso/Makefile                |  8 ++++
 arch/x86/vdso/vclock_gettime.c        | 76 +++++++++++++++++++++++++++++++----
 arch/x86/vdso/vdso-layout.lds.S       | 22 ++++++++++
 arch/x86/vdso/vdso32-setup.c          | 47 ++++++++++++++++++++--
 arch/x86/vdso/vdso32/vclock_gettime.c |  9 +++++
 arch/x86/vdso/vdso32/vdso32.lds.S     | 11 +++++
 8 files changed, 178 insertions(+), 11 deletions(-)
 create mode 100644 arch/x86/include/asm/vdso32.h
 create mode 100644 arch/x86/vdso/vdso32/vclock_gettime.c

diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h
index f8605e6..bde4359 100644
--- a/arch/x86/include/asm/vdso.h
+++ b/arch/x86/include/asm/vdso.h
@@ -2,6 +2,11 @@
 #define _ASM_X86_VDSO_H
 
 #if defined CONFIG_X86_32 || defined CONFIG_COMPAT
+
+#include <asm/vdso32.h>
+
+extern const char VDSO32_PRELINK[];
+
 /*
  * Given a pointer to the vDSO image, find the pointer to VDSO32_name
  * as that symbol is defined in the vDSO sources or linker script.
diff --git a/arch/x86/include/asm/vdso32.h b/arch/x86/include/asm/vdso32.h
new file mode 100644
index 0000000..7efb701
--- /dev/null
+++ b/arch/x86/include/asm/vdso32.h
@@ -0,0 +1,11 @@
+#ifndef _ASM_X86_VDSO32_H
+#define _ASM_X86_VDSO32_H
+
+#define VDSO_BASE_PAGE	0
+#define VDSO_VVAR_PAGE	1
+#define VDSO_HPET_PAGE	2
+#define VDSO_PAGES	3
+#define VDSO_PREV_PAGES	2
+#define VDSO_OFFSET(x)	((x) * PAGE_SIZE)
+
+#endif
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 7a3d13e..6cef7a1 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -146,8 +146,16 @@ KBUILD_AFLAGS_32 := $(filter-out -m64,$(KBUILD_AFLAGS))
 $(vdso32-images:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_32)
 $(vdso32-images:%=$(obj)/%.dbg): asflags-$(CONFIG_X86_64) += -m32
 
+KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
+KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32))
+KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic
+$(vdso32-images:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
+
 $(vdso32-images:%=$(obj)/%.dbg): $(obj)/vdso32-%.so.dbg: FORCE \
 				 $(obj)/vdso32/vdso32.lds \
+				 $(obj)/vdso32/vclock_gettime.o \
 				 $(obj)/vdso32/note.o \
 				 $(obj)/vdso32/%.o
 	$(call if_changed,vdso)
diff --git a/arch/x86/vdso/vclock_gettime.c b/arch/x86/vdso/vclock_gettime.c
index 09dae4a..90bb5e8 100644
--- a/arch/x86/vdso/vclock_gettime.c
+++ b/arch/x86/vdso/vclock_gettime.c
@@ -4,6 +4,9 @@
  *
  * Fast user context implementation of clock_gettime, gettimeofday, and time.
  *
+ * 32 Bit compat layer by Stefani Seibold <stefani@seibold.net>
+ *  sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany
+ *
  * The code should have no internal unresolved relocations.
  * Check with readelf after changing.
  */
@@ -12,13 +15,11 @@
 #define DISABLE_BRANCH_PROFILING
 
 #include <linux/kernel.h>
-#include <linux/posix-timers.h>
-#include <linux/time.h>
+#include <uapi/linux/time.h>
 #include <linux/string.h>
 #include <asm/vsyscall.h>
 #include <asm/fixmap.h>
 #include <asm/vgtod.h>
-#include <asm/timex.h>
 #include <asm/hpet.h>
 #include <asm/unistd.h>
 #include <asm/io.h>
@@ -26,6 +27,12 @@
 
 #define gtod (&VVAR(vsyscall_gtod_data))
 
+extern int __vdso_clock_gettime(clockid_t clock, struct timespec *ts);
+extern int __vdso_gettimeofday(struct timeval *tv, struct timezone *tz);
+extern time_t __vdso_time(time_t *t);
+
+#ifndef BUILD_VDSO32
+
 static notrace cycle_t vread_hpet(void)
 {
 	return readl((const void __iomem *)fix_to_virt(VSYSCALL_HPET) + HPET_COUNTER);
@@ -118,6 +125,59 @@ static notrace cycle_t vread_pvclock(int *mode)
 }
 #endif
 
+#else
+
+extern u8 hpet_page
+	__attribute__((visibility("hidden")));
+
+#ifdef CONFIG_HPET_TIMER
+static notrace cycle_t vread_hpet(void)
+{
+	return readl((const void __iomem *)(&hpet_page + HPET_COUNTER));
+}
+#endif
+
+notrace static long vdso_fallback_gettime(long clock, struct timespec *ts)
+{
+	long ret;
+
+	asm(
+		"mov %%ebx, %%edx \n"
+		"mov %2, %%ebx \n"
+		"call VDSO32_vsyscall \n"
+		"mov %%edx, %%ebx \n"
+		: "=a" (ret)
+		: "0" (__NR_clock_gettime), "g" (clock), "c" (ts)
+		: "memory", "edx");
+	return ret;
+}
+
+notrace static long vdso_fallback_gtod(struct timeval *tv, struct timezone *tz)
+{
+	long ret;
+
+	asm(
+		"mov %%ebx, %%edx \n"
+		"mov %2, %%ebx \n"
+		"call VDSO32_vsyscall \n"
+		"mov %%edx, %%ebx \n"
+		: "=a" (ret)
+		: "0" (__NR_gettimeofday), "g" (tv), "c" (tz)
+		: "memory", "edx");
+	return ret;
+}
+
+#ifdef CONFIG_PARAVIRT_CLOCK
+
+static notrace cycle_t vread_pvclock(int *mode)
+{
+	*mode = VCLOCK_NONE;
+	return 0;
+}
+#endif
+
+#endif
+
 notrace static cycle_t vread_tsc(void)
 {
 	cycle_t ret;
@@ -131,7 +191,7 @@ notrace static cycle_t vread_tsc(void)
 	 * but no one has ever seen it happen.
 	 */
 	rdtsc_barrier();
-	ret = (cycle_t)vget_cycles();
+	ret = (cycle_t)__native_read_tsc();
 
 	last = gtod->clock.cycle_last;
 
@@ -152,12 +212,14 @@ notrace static cycle_t vread_tsc(void)
 
 notrace static inline u64 vgetsns(int *mode)
 {
-	long v;
+	u64 v;
 	cycles_t cycles;
 	if (gtod->clock.vclock_mode == VCLOCK_TSC)
 		cycles = vread_tsc();
+#ifdef CONFIG_HPET_TIMER
 	else if (gtod->clock.vclock_mode == VCLOCK_HPET)
 		cycles = vread_hpet();
+#endif
 #ifdef CONFIG_PARAVIRT_CLOCK
 	else if (gtod->clock.vclock_mode == VCLOCK_PVCLOCK)
 		cycles = vread_pvclock(mode);
@@ -189,7 +251,7 @@ notrace static int __always_inline do_realtime(struct timespec *ts)
 	return mode;
 }
 
-notrace static int do_monotonic(struct timespec *ts)
+notrace static int __always_inline do_monotonic(struct timespec *ts)
 {
 	unsigned long seq;
 	u64 ns;
@@ -284,7 +346,7 @@ int gettimeofday(struct timeval *, struct timezone *)
  */
 notrace time_t __vdso_time(time_t *t)
 {
-	/* This is atomic on x86_64 so we don't need any locks. */
+	/* This is atomic on x86 so we don't need any locks. */
 	time_t result = ACCESS_ONCE(gtod->wall_time_sec);
 
 	if (t)
diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 8c550c1..c6d0e1b 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -6,6 +6,24 @@
 
 SECTIONS
 {
+#ifdef BUILD_VDSO32
+#include <asm/vdso32.h>
+
+	.hpet_sect : {
+		hpet_page = . - VDSO_OFFSET(VDSO_HPET_PAGE);
+	} :text :hpet_sect
+
+	.vvar_sect : {
+		vvar = . - VDSO_OFFSET(VDSO_VVAR_PAGE);
+
+	/* Place all vvars at the offsets in asm/vvar.h. */
+#define EMIT_VVAR(name, offset) vvar_ ## name = vvar + offset;
+#define __VVAR_KERNEL_LDS
+#include <asm/vvar.h>
+#undef __VVAR_KERNEL_LDS
+#undef EMIT_VVAR
+	} :text :vvar_sect
+#endif
 	. = SIZEOF_HEADERS;
 
 	.hash		: { *(.hash) }			:text
@@ -61,4 +79,8 @@ PHDRS
 	dynamic		PT_DYNAMIC	FLAGS(4);		/* PF_R */
 	note		PT_NOTE		FLAGS(4);		/* PF_R */
 	eh_frame_hdr	PT_GNU_EH_FRAME;
+#ifdef BUILD_VDSO32
+	vvar_sect	PT_NULL		FLAGS(4);		/* PF_R */
+	hpet_sect	PT_NULL		FLAGS(4);		/* PF_R */
+#endif
 }
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index e0fc767..e10abdf 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -25,6 +25,9 @@
 #include <asm/tlbflush.h>
 #include <asm/vdso.h>
 #include <asm/proto.h>
+#include <asm/fixmap.h>
+#include <asm/hpet.h>
+#include <asm/vvar.h>
 
 #ifdef CONFIG_COMPAT_VDSO
 #define VDSO_DEFAULT	0
@@ -141,6 +144,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	struct mm_struct *mm = current->mm;
 	unsigned long addr;
 	int ret = 0;
+	struct vm_area_struct *vma;
 
 #ifdef CONFIG_X86_X32_ABI
 	if (test_thread_flag(TIF_X32))
@@ -163,14 +167,49 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	/*
 	 * MAYWRITE to allow gdb to COW and set breakpoints
 	 */
-	ret = install_special_mapping(mm, addr, PAGE_SIZE,
-				      VM_READ|VM_EXEC|
-				      VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
-				      vdso32_pages);
+	ret = install_special_mapping(mm,
+			addr,
+			VDSO_OFFSET(VDSO_PAGES - VDSO_PREV_PAGES),
+			VM_READ|VM_EXEC|
+			VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
+			vdso32_pages);
 
 	if (ret)
 		goto up_fail;
 
+	vma = _install_special_mapping(mm,
+			addr -  VDSO_OFFSET(VDSO_PREV_PAGES),
+			VDSO_OFFSET(VDSO_PREV_PAGES),
+			VM_READ,
+			NULL);
+
+	if (IS_ERR(vma)) {
+		ret = PTR_ERR(vma);
+		goto up_fail;
+	}
+
+	ret = remap_pfn_range(vma,
+		addr - VDSO_OFFSET(VDSO_VVAR_PAGE),
+		__pa_symbol(&__vvar_page) >> PAGE_SHIFT,
+		PAGE_SIZE,
+		PAGE_READONLY);
+
+	if (ret)
+		goto up_fail;
+
+#ifdef CONFIG_HPET_TIMER
+	if (hpet_address) {
+		ret = io_remap_pfn_range(vma,
+			addr - VDSO_OFFSET(VDSO_HPET_PAGE),
+			hpet_address >> PAGE_SHIFT,
+			PAGE_SIZE,
+			pgprot_noncached(PAGE_READONLY));
+
+		if (ret)
+			goto up_fail;
+	}
+#endif
+
 	current_thread_info()->sysenter_return =
 		VDSO32_SYMBOL(addr, SYSENTER_RETURN);
 
diff --git a/arch/x86/vdso/vdso32/vclock_gettime.c b/arch/x86/vdso/vdso32/vclock_gettime.c
new file mode 100644
index 0000000..ca65e42
--- /dev/null
+++ b/arch/x86/vdso/vdso32/vclock_gettime.c
@@ -0,0 +1,9 @@
+#define BUILD_VDSO32
+
+#ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE
+#undef CONFIG_OPTIMIZE_INLINING
+#endif
+
+#undef CONFIG_X86_PPRO_FENCE
+
+#include "../vclock_gettime.c"
diff --git a/arch/x86/vdso/vdso32/vdso32.lds.S b/arch/x86/vdso/vdso32/vdso32.lds.S
index 90e7aa9..28c4607 100644
--- a/arch/x86/vdso/vdso32/vdso32.lds.S
+++ b/arch/x86/vdso/vdso32/vdso32.lds.S
@@ -8,6 +8,11 @@
  * values visible using the asm-x86/vdso.h macros from the kernel proper.
  */
 
+#include <asm/page.h>
+
+#define BUILD_VDSO32
+#define VDSO_PRELINK 0
+
 #include "../vdso-layout.lds.S"
 
 /* The ELF entry point can be used to set the AT_SYSINFO value.  */
@@ -23,6 +28,9 @@ VERSION
 		__kernel_vsyscall;
 		__kernel_sigreturn;
 		__kernel_rt_sigreturn;
+		__vdso_clock_gettime;
+		__vdso_gettimeofday;
+		__vdso_time;
 	local: *;
 	};
 }
@@ -33,3 +41,6 @@ VERSION
 VDSO32_vsyscall		= __kernel_vsyscall;
 VDSO32_sigreturn	= __kernel_sigreturn;
 VDSO32_rt_sigreturn	= __kernel_rt_sigreturn;
+VDSO32_clock_gettime	= clock_gettime;
+VDSO32_gettimeofday	= gettimeofday;
+VDSO32_time		= time;
-- 
1.9.0


^ permalink raw reply	[flat|nested] 25+ messages in thread
end of thread, other threads:[~2014-03-18 21:30 UTC | newest]

Thread overview: 25+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-03-03 21:12 [PATCH v22 00/12] Add 32 bit VDSO time function support Stefani Seibold
2014-03-03 21:12 ` [Patch v22 01/12] x86: Make vsyscall_gtod_data handling x86 generic Stefani Seibold
2014-03-05 22:30   ` [tip:x86/vdso] x86, vdso: " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 02/12] x86: Add new func _install_special_mapping() to mmap.c Stefani Seibold
2014-03-05 22:30   ` [tip:x86/vdso] mm: " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 03/12] x86: revamp vclock_gettime.c Stefani Seibold
2014-03-05 22:30   ` [tip:x86/vdso] x86, vdso: Revamp vclock_gettime.c tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 04/12] x86: vclock_gettime.c __vdso_clock_gettime cleanup Stefani Seibold
2014-03-05 22:31   ` [tip:x86/vdso] x86, vdso: __vdso_clock_gettime() cleanup tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 05/12] x86: replace VVAR(vsyscall_gtod_data) by gtod macro Stefani Seibold
2014-03-05 22:31   ` [tip:x86/vdso] x86, vdso: Replace " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 06/12] x86: cleanup __vdso_gettimeofday Stefani Seibold
2014-03-05 22:31   ` [tip:x86/vdso] x86, vdso: Cleanup __vdso_gettimeofday() tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 07/12] x86: introduce VVAR marco for vdso32 Stefani Seibold
2014-03-05 22:31   ` [tip:x86/vdso] x86, vdso: Introduce " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 08/12] x86: Patch alternatives in the 32-bit vDSO Stefani Seibold
2014-03-05 22:31   ` [tip:x86/vdso] x86, vdso: Patch alternatives in the 32-bit VDSO tip-bot for Andy Lutomirski
2014-03-03 21:12 ` [Patch v22 09/12] x86: Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
2014-03-05 22:32   ` [tip:x86/vdso] x86, vdso: " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 10/12] x86: Add 32 bit VDSO time support for 64 " Stefani Seibold
2014-03-05 22:32   ` [tip:x86/vdso] x86, vdso: " tip-bot for Stefani Seibold
2014-03-03 21:12 ` [Patch v22 12/12] x86: Zero-pad the VVAR page Stefani Seibold
2014-03-05 22:32   ` [tip:x86/vdso] x86, vdso: " tip-bot for Andy Lutomirski
2014-03-06 17:51   ` [tip:x86/vdso] x86, vdso32: Disable stack protector, adjust optimizations tip-bot for H. Peter Anvin
2014-03-17 22:22 [PATCH v23 09/13] x86, vdso: Add 32 bit VDSO time support for 32 bit kernel Stefani Seibold
2014-03-18 21:29 ` [tip:x86/vdso] " tip-bot for Stefani Seibold

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