Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752503Ab3JWJbh (ORCPT ); Wed, 23 Oct 2013 05:31:37 -0400 Received: from mail.windriver.com ([147.11.1.11]:64106 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751509Ab3JWJbf (ORCPT ); Wed, 23 Oct 2013 05:31:35 -0400 From: Tiejun Chen To: CC: , , Subject: [v6][PATCH 0/5] powerpc/book3e: powerpc/book3e: make kgdb to work well Date: Wed, 23 Oct 2013 17:31:20 +0800 Message-ID: <1382520685-11609-1-git-send-email-tiejun.chen@windriver.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2849 Lines: 84 Scott, Tested on fsl-p5040 DS. v6: * rebase * change the C code to initialize the exception stack addresses in the PACA instead. * Clear the PACA_IRQ_HARD_DIS force to exit directly from this debug exception without replaying interrupt. * so drop "book3e/kgdb: update thread's dbcr0". v5: * rebase on merge branch. Note the original patch, [ATCH 5/7] kgdb/kgdbts: support ppc64, is already merged by Jason. v4: * use DEFINE_PER_CPU to allocate kgdb's thread_info * add patch 7 to make usre copy thread_info only !__check_irq_replay * leave "andi. r14,r11,MSR_PR" out of "#ifndef CONFIG_KGDB" since cr0 is still used lately. * retest v3: * make work when enable CONFIG_RELOCATABLE * fix one typo in patch, "powerpc/book3e: store critical/machine/debug exception thread info": ld r1,PACAKSAVE(r13); -> ld r14,PACAKSAVE(r13); * remove copying the thread_info since booke and book3e always copy the thead_info now when we enter the debug exception, and so drop the v2 patch, "book3e/kgdb: Fix a single stgep case of lazy IRQ" v2: * Make sure we cover CONFIG_PPC_BOOK3E_64 safely * Use LOAD_REG_IMMEDIATE() to load properly the value of the constant expression in load debug exception stack * Copy thread infor form the kernel stack coming from usr * Rebase latest powerpc git tree v1: * Copy thread info only when we are from !user mode since we'll get kernel stack coming from usr directly. * remove save/restore EX_R14/EX_R15 since DBG_EXCEPTION_PROLOG already covered this. * use CURRENT_THREAD_INFO() conveniently to get thread. * fix some typos * add a patch to make sure gdb can generate a single step properly to invoke a kgdb state. * add a patch to if we need to replay an interrupt, we shouldn't restore that previous backup thread info to make sure we can replay an interrupt lately with a proper thread info. * rebase latest powerpc git tree v0: This patchset is used to support kgdb for book3e. ---------------------------------------------------------------- Tiejun Chen (5): powerpc/book3e: initialize crit/mc/dbg kernel stack pointers powerpc/book3e: store crit/mc/dbg exception thread info powerpc/book3e: support kgdb for kernel space powerpc/kgdb: use DEFINE_PER_CPU to allocate kgdb's thread_info powerpc/book3e/kgdb: Fix a single stgep case of lazy IRQ arch/powerpc/kernel/exceptions-64e.S | 26 ++++++++++++++++++++++---- arch/powerpc/kernel/kgdb.c | 13 ++++++++++--- arch/powerpc/kernel/setup_64.c | 18 ++++++++++++------ 3 files changed, 44 insertions(+), 13 deletions(-) Tiejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/