Patch "x86/tlb: Drop the _GPL from the cpu_tlbstate export" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

x86/tlb: Drop the _GPL from the cpu_tlbstate export

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
x86-tlb-drop-the-_gpl-from-the-cpu_tlbstate-export.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Thomas Gleixner <[email protected]>
Date: Thu, 4 Jan 2018 22:19:04 +0100
Subject: x86/tlb: Drop the _GPL from the cpu_tlbstate export

From: Thomas Gleixner <[email protected]>

commit 1e5476815fd7f98b888e01a0f9522b63085f96c9 upstream.

The recent changes for PTI touch cpu_tlbstate from various tlb_flush inlines. cpu_tlbstate is exported as GPL symbol, so this causes a regression when building out of tree drivers for certain graphics cards.

Aside of that the export was wrong since it was introduced as it should have been EXPORT_PER_CPU_SYMBOL_GPL().

Use the correct PER_CPU export and drop the _GPL to restore the previous state which allows users to utilize the cards they payed for.

As always I'm really thrilled to make this kind of change to support the #friends (or however the hot hashtag of today is spelled) from that closet sauce graphics corp.

---
 arch/x86/mm/init.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -757,7 +757,7 @@ DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb
 	.state = 0,
 	.cr4 = ~0UL,	/* fail hard if we screw up cr4 shadow initialization */
 };
-EXPORT_SYMBOL_GPL(cpu_tlbstate);
+EXPORT_PER_CPU_SYMBOL(cpu_tlbstate);
 
 void update_cache_mode_entry(unsigned entry, enum page_cache_mode cache)
 {

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/x86-tlb-drop-the-_gpl-from-the-cpu_tlbstate-export.patch queue-4.4/x86-kasan-write-protect-kasan-zero-shadow.patch queue-4.4/x86-microcode-amd-add-support-for-fam17h-microcode-loading.patch