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Date: Thu, 11 Nov 2010 14:56:14 +0100 From: Joerg Roedel <joerg.roedel@....com> To: Greg KH <greg@...ah.com> CC: Borislav Petkov <bp@...64.org>, <linux-kernel@...r.kernel.org>, <stable@...nel.org>, Hugh Dickins <hughd@...gle.com>, "H. Peter Anvin" <hpa@...or.com> Subject: [PATCH 2/3] x86, mm: Fix CONFIG_VMSPLIT_1G and 2G_OPT trampoline From: Hugh Dickins <hughd@...gle.com> rc2 kernel crashes when booting second cpu on this CONFIG_VMSPLIT_2G_OPT laptop: whereas cloning from kernel to low mappings pgd range does need to limit by both KERNEL_PGD_PTRS and KERNEL_PGD_BOUNDARY, cloning kernel pgd range itself must not be limited by the smaller KERNEL_PGD_BOUNDARY. Signed-off-by: Hugh Dickins <hughd@...gle.com> LKML-Reference: <alpine.LSU.2.00.1008242235120.2515@...ter.anvils> Signed-off-by: H. Peter Anvin <hpa@...or.com> --- arch/x86/kernel/trampoline.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c index 4e816a4..0ac23a7 100644 --- a/arch/x86/kernel/trampoline.c +++ b/arch/x86/kernel/trampoline.c @@ -47,8 +47,7 @@ void __init setup_trampoline_page_table(void) /* Copy kernel address range */ clone_pgd_range(trampoline_pg_dir + KERNEL_PGD_BOUNDARY, swapper_pg_dir + KERNEL_PGD_BOUNDARY, - min_t(unsigned long, KERNEL_PGD_PTRS, - KERNEL_PGD_BOUNDARY)); + KERNEL_PGD_PTRS); /* Initialize low mappings */ clone_pgd_range(trampoline_pg_dir, -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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