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| author |   Thomas Weißschuh <thomas.weissschuh@linutronix.de> | 2024-10-10 09:01:14 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2024-11-02 12:37:34 +0100 |
| commit | 9f8514cfcdf0d929e2d3d440c0d4991f16b7e53b (patch) | |
| tree | 4f8d1fbcc1403c340af7606c7c903f7479be53dd | |
| parent | x86/vdso: Use __arch_get_vdso_data() to access vdso data (diff) | |
| download | wireguard-linux-9f8514cfcdf0d929e2d3d440c0d4991f16b7e53b.tar.xz wireguard-linux-9f8514cfcdf0d929e2d3d440c0d4991f16b7e53b.zip | |
x86/vdso: Place vdso_data at beginning of vvar page
The offset of the vdso_data only has historic reasons, as back then
other vvars also existed and offset 0 was already used.
(See commit 8c49d9a74bac ("x86-64: Clean up vdso/kernel shared variables"))
Over time most other vvars got removed and offset 0 is free again.
Moving vdso_data to the beginning of the vvar page aligns x86 with other
architectures and opens up the way for the removal of the custom x86
vvar machinery.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-12-b64f0842d512@linutronix.de
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/include/asm/vvar.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h index 9d9af37f7cab..01e60e0f671e 100644 --- a/arch/x86/include/asm/vvar.h +++ b/arch/x86/include/asm/vvar.h @@ -58,7 +58,7 @@ extern char __vvar_page; /* DECLARE_VVAR(offset, type, name) */ -DECLARE_VVAR(128, struct vdso_data, _vdso_data) +DECLARE_VVAR(0, struct vdso_data, _vdso_data) #if !defined(_SINGLE_DATA) #define _SINGLE_DATA |