From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59329) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WsF1G-0000tg-Or for qemu-devel@nongnu.org; Wed, 04 Jun 2014 13:30:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WsF1A-0006GK-P4 for qemu-devel@nongnu.org; Wed, 04 Jun 2014 13:30:34 -0400 Message-ID: <538F57AE.1050307@gmail.com> Date: Wed, 04 Jun 2014 12:30:22 -0500 From: Tom Musta MIME-Version: 1.0 References: <1401886265-6589-1-git-send-email-aik@ozlabs.ru> <1401886265-6589-29-git-send-email-aik@ozlabs.ru> In-Reply-To: <1401886265-6589-29-git-send-email-aik@ozlabs.ru> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v5 28/30] target-ppc: Enable DABRX SPR and limit it to <=POWER7 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alexey Kardashevskiy , qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, Alexander Graf , Greg Kurz On 6/4/2014 7:51 AM, Alexey Kardashevskiy wrote: > This adds DABRX SPR. > > As DABR(X) are present in POWER CPUs till POWER7 only and POWER8 does not > have them (as it implements more powerful facility instead), this limits > DABR/DABRX registration by POWER7 (inclusive). > > Signed-off-by: Alexey Kardashevskiy > --- > Changes: > v5: > * enabled access for super-mode > * added "TODO" comment > --- > target-ppc/translate_init.c | 15 ++++++++++++++- > 1 file changed, 14 insertions(+), 1 deletion(-) > > diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c > index 04390a5..85581c9 100644 > --- a/target-ppc/translate_init.c > +++ b/target-ppc/translate_init.c > @@ -7411,10 +7411,21 @@ static void gen_spr_book3s_altivec(CPUPPCState *env) > > static void gen_spr_book3s_dbg(CPUPPCState *env) > { > + /* > + * TODO: different specs define different scopes for these, > + * will have to address this: > + * 970: super/write and super/read > + * powerisa 2.03..2.04: hypv/write and super/read. > + * powerisa 2.05 and newer: hypv/write and hypv/read. > + */ > spr_register_kvm(env, SPR_DABR, "DABR", > SPR_NOACCESS, SPR_NOACCESS, > &spr_read_generic, &spr_write_generic, > KVM_REG_PPC_DABR, 0x00000000); > + spr_register_kvm(env, SPR_DABRX, "DABRX", > + SPR_NOACCESS, SPR_NOACCESS, > + &spr_read_generic, &spr_write_generic, > + KVM_REG_PPC_DABRX, 0x00000000); > } > > static void gen_spr_970_dbg(CPUPPCState *env) > @@ -7793,7 +7804,6 @@ static void init_proc_book3s_64(CPUPPCState *env, int version) > gen_spr_book3s_altivec(env); > gen_spr_book3s_pmu_sup(env); > gen_spr_book3s_pmu_user(env); > - gen_spr_book3s_dbg(env); > gen_spr_book3s_common(env); > > switch (version) { > @@ -7837,6 +7847,9 @@ static void init_proc_book3s_64(CPUPPCState *env, int version) > gen_spr_power8_pmu_user(env); > gen_spr_power8_tm(env); > } > + if (version < BOOK3S_CPU_POWER8) { > + gen_spr_book3s_dbg(env); > + } > #if !defined(CONFIG_USER_ONLY) > switch (version) { > case BOOK3S_CPU_970: > Reviewed-by: Tom Musta