[tip:x86/olpc] x86, olpc: Add comment about implicit optimization barrier
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From: tip-bot for Andres Salomon on 24 Jun 2010 05:50 Commit-ID: 75a9cac430a1bd2a5219c74508ca01b0ddfddc9a Gitweb: http://git.kernel.org/tip/75a9cac430a1bd2a5219c74508ca01b0ddfddc9a Author: Andres Salomon <dilinger(a)queued.net> AuthorDate: Wed, 23 Jun 2010 20:27:00 -0400 Committer: Ingo Molnar <mingo(a)elte.hu> CommitDate: Thu, 24 Jun 2010 11:40:47 +0200 x86, olpc: Add comment about implicit optimization barrier Signed-off-by: Andres Salomon <dilinger(a)queued.net> Cc: H. Peter Anvin <hpa(a)linux.intel.com> LKML-Reference: <20100618174653.7755a39a(a)dev.queued.net> Signed-off-by: Ingo Molnar <mingo(a)elte.hu> --- arch/x86/kernel/olpc_ofw.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/olpc_ofw.c b/arch/x86/kernel/olpc_ofw.c index 469ee43..f5d499f 100644 --- a/arch/x86/kernel/olpc_ofw.c +++ b/arch/x86/kernel/olpc_ofw.c @@ -35,6 +35,8 @@ void __init setup_olpc_ofw_pgd(void) /* install OFW's PDE permanently into the kernel's pgtable */ set_pgd(&swapper_pg_dir[OLPC_OFW_PDE_NR], *ofw_pde); + /* implicit optimization barrier here due to uninline function return */ + early_iounmap(base, sizeof(olpc_ofw_pgd) * PTRS_PER_PGD); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |