From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.windriver.com (mail.windriver.com [147.11.1.11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mail.windriver.com", Issuer "Intel External Basic Issuing CA 3A" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 41AC42C023D for ; Thu, 20 Jun 2013 20:28:47 +1000 (EST) From: Tiejun Chen To: Subject: [v5][PATCH 0/6] powerpc/book3e: powerpc/book3e: make kgdb to work well Date: Thu, 20 Jun 2013 18:28:24 +0800 Message-ID: <1371724110-8250-1-git-send-email-tiejun.chen@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Ben, As you mention just now, I resend this another pending patch sets v5 used to support kgdb/gdb on book3e. 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 (6): powerpc/book3e: load critical/machine/debug exception stack powerpc/book3e: store critical/machine/debug exception thread info book3e/kgdb: update thread's dbcr0 powerpc/book3e: support kgdb for kernel space powerpc/kgdb: use DEFINE_PER_CPU to allocate kgdb's thread_info book3e/kgdb: Fix a single stgep case of lazy IRQ arch/powerpc/kernel/exceptions-64e.S | 68 ++++++++++++++++++++++++++++++++-- arch/powerpc/kernel/irq.c | 10 +++++ arch/powerpc/kernel/kgdb.c | 21 +++++++---- 3 files changed, 88 insertions(+), 11 deletions(-) Tiejun