From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39995) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1afVnv-0000BV-5Z for qemu-devel@nongnu.org; Mon, 14 Mar 2016 12:57:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1afVnr-0004xQ-SG for qemu-devel@nongnu.org; Mon, 14 Mar 2016 12:57:15 -0400 Received: from e06smtp16.uk.ibm.com ([195.75.94.112]:46014) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1afVnr-0004wu-K9 for qemu-devel@nongnu.org; Mon, 14 Mar 2016 12:57:11 -0400 Received: from localhost by e06smtp16.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 14 Mar 2016 16:57:10 -0000 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Mon, 14 Mar 2016 17:56:32 +0100 Message-Id: <1457974600-13828-10-git-send-email-clg@fr.ibm.com> In-Reply-To: <1457974600-13828-1-git-send-email-clg@fr.ibm.com> References: <1457974600-13828-1-git-send-email-clg@fr.ibm.com> Subject: [Qemu-devel] [PATCH 09/17] ppc: SPURR & PURR are HV writeable and privileged List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: David Gibson Cc: Thomas Huth , qemu-ppc@nongnu.org, qemu-devel@nongnu.org From: Benjamin Herrenschmidt Those are HV writeable, so we provide a dummy write. We eventually need to provide a better emulation but for now this will get us going. We also make them non-user readable as per the architecture. Signed-off-by: Benjamin Herrenschmidt --- target-ppc/translate_init.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c index 7a399b97bc6f..10f67136b609 100644 --- a/target-ppc/translate_init.c +++ b/target-ppc/translate_init.c @@ -293,6 +293,13 @@ static void spr_read_purr (DisasContext *ctx, int gprn, int sprn) { gen_helper_load_purr(cpu_gpr[gprn], cpu_env); } + +__attribute__ ((unused)) +static void spr_write_purr(DisasContext *ctx, int gprn, int sprn) +{ + /* Temporary placeholder */ +} + #endif #endif @@ -7828,14 +7835,16 @@ static void gen_spr_book3s_purr(CPUPPCState *env) { #if !defined(CONFIG_USER_ONLY) /* PURR & SPURR: Hack - treat these as aliases for the TB for now */ - spr_register_kvm(env, SPR_PURR, "PURR", - &spr_read_purr, SPR_NOACCESS, - &spr_read_purr, SPR_NOACCESS, - KVM_REG_PPC_PURR, 0x00000000); - spr_register_kvm(env, SPR_SPURR, "SPURR", - &spr_read_purr, SPR_NOACCESS, - &spr_read_purr, SPR_NOACCESS, - KVM_REG_PPC_SPURR, 0x00000000); + spr_register_kvm_hv(env, SPR_PURR, "PURR", + SPR_NOACCESS, SPR_NOACCESS, + &spr_read_purr, SPR_NOACCESS, + &spr_read_purr, &spr_write_purr, + KVM_REG_PPC_PURR, 0x00000000); + spr_register_kvm_hv(env, SPR_SPURR, "SPURR", + SPR_NOACCESS, SPR_NOACCESS, + &spr_read_purr, SPR_NOACCESS, + &spr_read_purr, &spr_write_purr, + KVM_REG_PPC_SPURR, 0x00000000); #endif } -- 2.1.4