From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mathieu Desnoyers Subject: [PATCH] Xen i386 xen-head.S fix sections mixup Date: Sun, 19 Aug 2007 23:04:20 -0400 Message-ID: <20070820030420.GA11070@Krystal> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Andrew Morton , jeremy@xensource.com, chrisw@sous-sol.org Cc: virtualization@lists.osdl.org, xen-devel@lists.xensource.com List-Id: virtualization@lists.linuxfoundation.org Xen i386 xen-head.S fix sections mixup xen-head.S does not come back to the data section, leaving the text section as current section. It causes problems with a slightly enhanced DEBUG_RODATA that supports CONFIG_HOTPLUG and bringing a CPU up after the text has been marked read-only: reference to early_gdt_descr causes a page fault. It applies on 2.6.22-rc2-mm2. Signed-off-by: Mathieu Desnoyers CC: jeremy@xensource.com CC: chrisw@sous-sol.org CC: virtualization@lists.osdl.org CC: xen-devel@lists.xensource.com --- arch/i386/xen/xen-head.S | 2 ++ 1 file changed, 2 insertions(+) Index: linux-2.6-lttng/arch/i386/xen/xen-head.S =================================================================== --- linux-2.6-lttng.orig/arch/i386/xen/xen-head.S 2007-08-19 22:45:58.000000000 -0400 +++ linux-2.6-lttng/arch/i386/xen/xen-head.S 2007-08-19 22:46:19.000000000 -0400 @@ -13,6 +13,7 @@ ENTRY(startup_xen) cld movl $(init_thread_union+THREAD_SIZE),%esp jmp xen_start_kernel + .previous .pushsection ".bss.page_aligned" .align PAGE_SIZE_asm @@ -34,5 +35,6 @@ ENTRY(hypercall_page) ELFNOTE(Xen, XEN_ELFNOTE_PAE_MODE, .asciz "no") #endif ELFNOTE(Xen, XEN_ELFNOTE_LOADER, .asciz "generic") + .previous #endif /*CONFIG_XEN */ -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68