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Date: Sat, 7 Feb 2009 18:40:02 +0100 From: Jiri Slaby <jirislaby@...il.com> To: mingo@...hat.com Cc: tglx@...utronix.de, hpa@...or.com, pavel@...e.cz, rjw@...k.pl, linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...il.com>, Brian Gerst <brgerst@...il.com>, Tejun Heo <tj@...nel.org> Subject: [PATCH 1/1] x86_64: fix early_gdt_descr_base mangling Commit 8c7e58e690ae60ab4215b025f433ed4af261e103 (x86: rework __per_cpu_load adjustments) has broken resume on my machine. On every secondary_startup_64 invocation, it adds initial_gs to early_gdt_descr_base. Fix it by initializing it to per_cpu__gdt_page and adding to it. Signed-off-by: Jiri Slaby <jirislaby@...il.com> Cc: Brian Gerst <brgerst@...il.com> Cc: Tejun Heo <tj@...nel.org> --- arch/x86/kernel/head_64.S | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index a0a2b5c..dadca8d 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -215,7 +215,8 @@ ENTRY(secondary_startup_64) movq initial_gs(%rip), %rax cmpl $0, per_cpu__cpu_number(%rax) jne 1f - addq %rax, early_gdt_descr_base(%rip) + addq $per_cpu__gdt_page, %rax + movq %rax, early_gdt_descr_base(%rip) 1: #endif /* @@ -425,7 +426,7 @@ NEXT_PAGE(level2_spare_pgt) early_gdt_descr: .word GDT_ENTRIES*8-1 early_gdt_descr_base: - .quad per_cpu__gdt_page + .quad 0 ENTRY(phys_base) /* This must match the first entry in level2_kernel_pgt */ -- 1.6.1.2 -- 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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