Messages in this thread Patch in this message | | | Date | Wed, 3 Jan 2018 14:25:40 -0800 | From | tip-bot for Nick Desaulniers <> | Subject | [tip:x86/pti] x86/process: Define cpu_tss_rw in same section as declaration |
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Commit-ID: 2fd9c41aea47f4ad071accf94b94f94f2c4d31eb Gitweb: https://git.kernel.org/tip/2fd9c41aea47f4ad071accf94b94f94f2c4d31eb Author: Nick Desaulniers <ndesaulniers@google.com> AuthorDate: Wed, 3 Jan 2018 12:39:52 -0800 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Wed, 3 Jan 2018 23:19:33 +0100
x86/process: Define cpu_tss_rw in same section as declaration
cpu_tss_rw is declared with DECLARE_PER_CPU_PAGE_ALIGNED but then defined with DEFINE_PER_CPU_SHARED_ALIGNED leading to section mismatch warnings.
Use DEFINE_PER_CPU_PAGE_ALIGNED consistently. This is necessary because it's mapped to the cpu entry area and must be page aligned.
[ tglx: Massaged changelog a bit ]
Fixes: 1a935bc3d4ea ("x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct") Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: thomas.lendacky@amd.com Cc: Borislav Petkov <bpetkov@suse.de> Cc: tklauser@distanz.ch Cc: minipli@googlemail.com Cc: me@kylehuey.com Cc: namit@vmware.com Cc: luto@kernel.org Cc: jpoimboe@redhat.com Cc: tj@kernel.org Cc: cl@linux.com Cc: bp@suse.de Cc: thgarnie@google.com Cc: kirill.shutemov@linux.intel.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180103203954.183360-1-ndesaulniers@google.com
--- arch/x86/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 5174159..3cb2486 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -47,7 +47,7 @@ * section. Since TSS's are completely CPU-local, we want them * on exact cacheline boundaries, to eliminate cacheline ping-pong. */ -__visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, cpu_tss_rw) = { +__visible DEFINE_PER_CPU_PAGE_ALIGNED(struct tss_struct, cpu_tss_rw) = { .x86_tss = { /* * .sp0 is only used when entering ring 0 from a lower
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