Commit 1e547681 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

x86/tlb: Drop the _GPL from the cpu_tlbstate export

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

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.

Fixes: 1e02ce4c ("x86: Store a per-cpu shadow copy of CR4")
Fixes: 6fd166aa

 ("x86/mm: Use/Fix PCID to optimize user/kernel switches")
Reported-by: default avatarKees Cook <>
Signed-off-by: default avatarThomas Gleixner <>
Cc: Greg Kroah-Hartman <>
Cc: Peter Zijlstra <>
Cc: Andy Lutomirski <>
parent 42f3bdc5
......@@ -870,7 +870,7 @@ __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tlb_state, cpu_tlbstate) = {
.next_asid = 1,
.cr4 = ~0UL, /* fail hard if we screw up cr4 shadow initialization */
void update_cache_mode_entry(unsigned entry, enum page_cache_mode cache)
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