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Date:   Sun,  3 May 2020 12:31:07 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86/tlb/uv: Add a forward declaration for struct flush_tlb_info

From: Borislav Petkov <bp@...e.de>

... to fix these build warnings:

  In file included from ./arch/x86/include/asm/uv/uv_hub.h:22,
                   from drivers/misc/sgi-gru/grukdump.c:16:
  ./arch/x86/include/asm/uv/uv.h:39:21: warning: ‘struct flush_tlb_info’ declared \
     inside parameter list will not be visible outside of this definition or declaration
     39 |        const struct flush_tlb_info *info);
        |                     ^~~~~~~~~~~~~~
  In file included from ./arch/x86/include/asm/uv/uv_hub.h:22,
                   from drivers/misc/sgi-gru/grutlbpurge.c:28:
  ./arch/x86/include/asm/uv/uv.h:39:21: warning: ‘struct flush_tlb_info’ declared \
    inside parameter list will not be visible outside of this definition or declaration
     39 |        const struct flush_tlb_info *info);
        |                     ^~~~~~~~~~~~~~

  ...

after

  bfe3d8f6313d ("x86/tlb: Restrict access to tlbstate")

restricted access to tlbstate.

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/include/asm/uv/uv.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/uv/uv.h b/arch/x86/include/asm/uv/uv.h
index 45ea95ce79b4..91e088ac6904 100644
--- a/arch/x86/include/asm/uv/uv.h
+++ b/arch/x86/include/asm/uv/uv.h
@@ -8,6 +8,7 @@ enum uv_system_type {UV_NONE, UV_LEGACY_APIC, UV_X2APIC, UV_NON_UNIQUE_APIC};
 
 struct cpumask;
 struct mm_struct;
+struct flush_tlb_info;
 
 #ifdef CONFIG_X86_UV
 #include <linux/efi.h>
-- 
2.21.0

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