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Date: Mon, 15 Jan 2007 14:59:30 +0300 From: Al Boldi <a1426z@...ab.com> To: roland@...hat.com Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/11] Fix CONFIG_COMPAT_VDSO Roland McGrath wrote: > > I wouldn't mind if CONFIG_COMPAT_VDSO went away entirely. > But if it's there, it should work properly. Currently > it's quite haphazard: both real vma and fixmap are > mapped, both are put in the two different AT_* slots, > sysenter returns to the vma address rather than the > fixmap address, and core dumps yet are another story. > > This patch makes CONFIG_COMPAT_VDSO disable the real vma > and use the fixmap area consistently. This makes it > actually compatible with what the old vdso implementation did. I just tried your patch, but your changes seem to revert performance improvements achieved with 2.6.19, when vdso_enabled=1 and randomize_va_space=0. Thanks! -- Al - 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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