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Groups > linux.kernel > #1611288
| From | Kees Cook <keescook@chromium.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [kernel-hardening] [PATCH v5 1/4] gcc-plugins: Add the initify gcc plugin |
| Date | 2017-03-28 21:10 +0200 |
| Message-ID | <tq4Fc-3He-19@gated-at.bofh.it> (permalink) |
| References | <t5NnA-5bA-27@gated-at.bofh.it> <t5NnA-5bA-41@gated-at.bofh.it> <tpzi1-5Ua-7@gated-at.bofh.it> <tpPGa-1lb-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Mar 27, 2017 at 8:03 PM, Andrew Donnellan <andrew.donnellan@au1.ibm.com> wrote: > On 27/03/17 18:38, Andrew Donnellan wrote: >> >> On 01/02/17 07:24, Kees Cook wrote: >>> >>> From: Emese Revfy <re.emese@gmail.com> >>> >>> The kernel already has a mechanism to free up code and data memory that >>> is only used during kernel or module initialization. This plugin will >>> teach the compiler to find more such code and data that can be freed >>> after initialization. >> >> >> Currently checking whether we can wire this up for powerpc without too >> many problems... > > > Added "select HAVE_GCC_PLUGIN_INITIFY_INIT_EXIT if GCC_PLUGINS" to > arch/powerpc/Kconfig and have successfully compiled and booted a modular and > non-modular powernv_defconfig, it looks like we handle the .exit sections > correctly. > > Could this be folded in for further testing when you get around to v6, Kees? Awesome, thanks for testing! I'll get it queued for a v6... -Kees -- Kees Cook Pixel Security
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Re: [kernel-hardening] [PATCH v5 1/4] gcc-plugins: Add the initify gcc plugin Andrew Donnellan <andrew.donnellan@au1.ibm.com> - 2017-03-28 05:10 +0200 Re: [kernel-hardening] [PATCH v5 1/4] gcc-plugins: Add the initify gcc plugin Kees Cook <keescook@chromium.org> - 2017-03-28 21:10 +0200
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