2018-01-15 11:26:15 +00:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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2018-01-06 14:13:39 +00:00
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From: Peter Zijlstra <peterz@infradead.org>
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Date: Tue, 5 Dec 2017 13:34:50 +0100
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2018-01-15 11:26:15 +00:00
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Subject: [PATCH] x86/uv: Use the right TLB-flush API
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2018-01-06 14:13:39 +00:00
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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CVE-2017-5754
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Since uv_flush_tlb_others() implements flush_tlb_others() which is
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about flushing user mappings, we should use __flush_tlb_single(),
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which too is about flushing user mappings.
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Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Acked-by: Andrew Banman <abanman@hpe.com>
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Cc: Andy Lutomirski <luto@kernel.org>
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Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Cc: Borislav Petkov <bp@alien8.de>
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Cc: Brian Gerst <brgerst@gmail.com>
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Cc: Dave Hansen <dave.hansen@linux.intel.com>
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Cc: David Laight <David.Laight@aculab.com>
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Cc: Denys Vlasenko <dvlasenk@redhat.com>
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Cc: Eduardo Valentin <eduval@amazon.com>
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Cc: Greg KH <gregkh@linuxfoundation.org>
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Cc: H. Peter Anvin <hpa@zytor.com>
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Cc: Josh Poimboeuf <jpoimboe@redhat.com>
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Cc: Juergen Gross <jgross@suse.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>
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Cc: Mike Travis <mike.travis@hpe.com>
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Cc: Peter Zijlstra <peterz@infradead.org>
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Cc: Will Deacon <will.deacon@arm.com>
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Cc: aliguori@amazon.com
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Cc: daniel.gruss@iaik.tugraz.at
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Cc: hughd@google.com
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Cc: keescook@google.com
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Cc: linux-mm@kvack.org
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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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(cherry picked from commit 3e46e0f5ee3643a1239be9046c7ba6c66ca2b329)
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
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Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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(cherry picked from commit 532216cdf02174dc08ca998b570c4699899fa355)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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arch/x86/platform/uv/tlb_uv.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
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index f44c0bc95aa2..8538a6723171 100644
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--- a/arch/x86/platform/uv/tlb_uv.c
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+++ b/arch/x86/platform/uv/tlb_uv.c
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@@ -299,7 +299,7 @@ static void bau_process_message(struct msg_desc *mdp, struct bau_control *bcp,
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local_flush_tlb();
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stat->d_alltlb++;
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} else {
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- __flush_tlb_one(msg->address);
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+ __flush_tlb_single(msg->address);
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stat->d_onetlb++;
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}
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stat->d_requestee++;
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--
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2.14.2
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