Commit-ID: f9a196b8dceba3c1e5fe885b81e45043ad7c60fc Gitweb: http://git.kernel.org/tip/f9a196b8dceba3c1e5fe885b81e45043ad7c60fc Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Fri, 1 May 2009 20:59:25 +0200 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitDate: Fri, 1 May 2009 21:09:53 +0200 x86: initialize io_bitmap_base on 32bit commit db949bba3c7cf2e664ac12e237c6d4c914f0c69d (x86-32: use non-lazy io bitmap context switching) broke ioperm for 32bit because it removed the lazy initialization of io_bitmap_base and did not set it to the real bitmap offset. [ Impact: fix non-working sys_ioperm() on 32-bit kernels ] Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- arch/x86/kernel/cpu/common.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index c4f6678..c1caefc 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1203,6 +1203,8 @@ void __cpuinit cpu_init(void) load_TR_desc(); load_LDT(&init_mm.context); + t->x86_tss.io_bitmap_base = offsetof(struct tss_struct, io_bitmap); + #ifdef CONFIG_DOUBLEFAULT /* Set up doublefault TSS pointer in the GDT */ __set_tss_desc(cpu, GDT_ENTRY_DOUBLEFAULT_TSS, &doublefault_tss); -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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