From: Thomas Weißschuh Date: Thu, 10 Oct 2024 07:01:14 +0000 (+0200) Subject: x86/vdso: Place vdso_data at beginning of vvar page X-Git-Tag: v6.13-rc1~172^2~17 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9f8514cfcdf0d929e2d3d440c0d4991f16b7e53b;p=thirdparty%2Fkernel%2Flinux.git 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 Signed-off-by: Thomas Gleixner Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-12-b64f0842d512@linutronix.de --- diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h index 9d9af37f7cab9..01e60e0f671e9 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