[tip: x86/fpu] x86/fpu: Mark init_fpstate __ro_after_init

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the x86/fpu branch of tip:

Commit-ID:     bf68a7d98922e1665019b8bf0c4791500837c857
Gitweb:        https://git.kernel.org/tip/bf68a7d98922e1665019b8bf0c4791500837c857
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Wed, 23 Jun 2021 14:02:24 +02:00
Committer:     Borislav Petkov <bp@xxxxxxx>
CommitterDate: Wed, 23 Jun 2021 19:58:45 +02:00

x86/fpu: Mark init_fpstate __ro_after_init

Nothing has to write into that state after init.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Link: https://lkml.kernel.org/r/20210623121456.992342060@xxxxxxxxxxxxx
---
 arch/x86/kernel/fpu/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 5295cba..7ada7bd 100644
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -23,7 +23,7 @@
  * Represents the initial FPU state. It's mostly (but not completely) zeroes,
  * depending on the FPU hardware format:
  */
-union fpregs_state init_fpstate __read_mostly;
+union fpregs_state init_fpstate __ro_after_init;
 
 /*
  * Track whether the kernel is using the FPU state