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[88.21.202.183]) by smtp.gmail.com with ESMTPSA id g8sm3247803wme.20.2019.06.28.04.27.15 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Fri, 28 Jun 2019 04:27:15 -0700 (PDT) To: David Gibson , peter.maydell@linaro.org References: <20190312085502.8203-1-david@gibson.dropbear.id.au> <20190312085502.8203-13-david@gibson.dropbear.id.au> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Openpgp: id=89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE; url=http://pgp.mit.edu/pks/lookup?op=get&search=0xA2A3FD6EDEADC0DE Message-ID: Date: Fri, 28 Jun 2019 13:27:14 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190312085502.8203-13-david@gibson.dropbear.id.au> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.128.48 Subject: Re: [Qemu-devel] [PULL 12/62] target/ppc/spapr: Enable mitigations by default for pseries-4.0 machine type X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, clg@kaod.org, Suraj Jitindar Singh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, On 3/12/19 9:54 AM, David Gibson wrote: > From: Suraj Jitindar Singh > > There are currently 3 mitigations the availability of which is controlled > by the spapr-caps mechanism, cap-cfpc, cap-sbbc, and cap-ibs. Enable these > mitigations by default for the pseries-4.0 machine type. > > By now machine firmware should have been upgraded to allow these > settings. > > Signed-off-by: Suraj Jitindar Singh > Message-Id: <20190301044609.9626-3-sjitindarsingh@gmail.com> > Signed-off-by: David Gibson > --- > hw/ppc/spapr.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c > index 37fd7a1411..946bbcf9ee 100644 > --- a/hw/ppc/spapr.c > +++ b/hw/ppc/spapr.c > @@ -4307,9 +4307,9 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data) > smc->default_caps.caps[SPAPR_CAP_HTM] = SPAPR_CAP_OFF; > smc->default_caps.caps[SPAPR_CAP_VSX] = SPAPR_CAP_ON; > smc->default_caps.caps[SPAPR_CAP_DFP] = SPAPR_CAP_ON; > - smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; > - smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; > - smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; > + smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_WORKAROUND; > + smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_WORKAROUND; > + smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_WORKAROUND; > smc->default_caps.caps[SPAPR_CAP_HPT_MAXPAGESIZE] = 16; /* 64kiB */ > smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF; > smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_ON; > @@ -4389,6 +4389,9 @@ static void spapr_machine_3_1_class_options(MachineClass *mc) > mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0"); > smc->update_dt_enabled = false; > smc->dr_phb_enabled = false; > + smc->default_caps.caps[SPAPR_CAP_CFPC] = SPAPR_CAP_BROKEN; > + smc->default_caps.caps[SPAPR_CAP_SBBC] = SPAPR_CAP_BROKEN; > + smc->default_caps.caps[SPAPR_CAP_IBS] = SPAPR_CAP_BROKEN; > smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_OFF; > } While trying auto-bisection for LP#1834613 [*] I found this commit break clean bisection. ./configure --enable-debug $ qemu-system-ppc64 \ -kernel vmlinuz-vanilla \ -nographic -serial null qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-cfpc=workaround qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-sbbc=workaround qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-ibs=workaround Opcode 13 10 10 00 (4c400420) leaked temporaries More verbose log: $ qemu-system-ppc64 \ -kernel vmlinuz-vanilla \ -nographic -append "console=hvc0" \ -d guest_errors,in_asm qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-cfpc=workaround qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-sbbc=workaround qemu-system-ppc64: warning: TCG doesn't support requested feature, cap-ibs=workaround SLOF ********************************************************************** QEMU Starting Build Date = Jan 14 2019 18:00:39 FW Version = git-a5b428e1c1eae703 Press "s" to enter Open Firmware. [...] -------------- IN: __switch_to 0xc00000000001aac0: 60000000 nop 0xc00000000001aac4: 7f44d378 mr r4, r26 0xc00000000001aac8: 7f23cb78 mr r3, r25 0xc00000000001aacc: 4bff3235 bl 0xdd00 ---------------- IN: _switch 0xc00000000000dd00: 7c0802a6 mflr r0 0xc00000000000dd04: f8010010 std r0, 0x10(r1) 0xc00000000000dd08: f821fe31 stdu r1, -0x1d0(r1) 0xc00000000000dd0c: f9c100e0 std r14, 0xe0(r1) 0xc00000000000dd10: f9e100e8 std r15, 0xe8(r1) 0xc00000000000dd14: fa0100f0 std r16, 0xf0(r1) 0xc00000000000dd18: fa2100f8 std r17, 0xf8(r1) 0xc00000000000dd1c: fa410100 std r18, 0x100(r1) 0xc00000000000dd20: fa610108 std r19, 0x108(r1) 0xc00000000000dd24: fa810110 std r20, 0x110(r1) 0xc00000000000dd28: faa10118 std r21, 0x118(r1) 0xc00000000000dd2c: fac10120 std r22, 0x120(r1) 0xc00000000000dd30: fae10128 std r23, 0x128(r1) 0xc00000000000dd34: fb010130 std r24, 0x130(r1) 0xc00000000000dd38: fb210138 std r25, 0x138(r1) 0xc00000000000dd3c: fb410140 std r26, 0x140(r1) 0xc00000000000dd40: fb610148 std r27, 0x148(r1) 0xc00000000000dd44: fb810150 std r28, 0x150(r1) 0xc00000000000dd48: fba10158 std r29, 0x158(r1) 0xc00000000000dd4c: fbc10160 std r30, 0x160(r1) 0xc00000000000dd50: fbe10168 std r31, 0x168(r1) 0xc00000000000dd54: f8010170 std r0, 0x170(r1) 0xc00000000000dd58: 7ee00026 mfcr r23 0xc00000000000dd5c: fae101a0 std r23, 0x1a0(r1) 0xc00000000000dd60: f8230000 std r1, 0(r3) 0xc00000000000dd64: 4bffdb3d bl 0xb8a0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8a0: 7d2802a6 mflr r9 0xc00000000000b8a4: 48000005 bl 0xb8a8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8a8: 48000005 bl 0xb8ac ---------------- IN: ret_from_kernel_thread 0xc00000000000b8ac: 48000005 bl 0xb8b0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8b0: 48000005 bl 0xb8b4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8b4: 48000005 bl 0xb8b8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8b8: 48000005 bl 0xb8bc ---------------- IN: ret_from_kernel_thread 0xc00000000000b8bc: 48000005 bl 0xb8c0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8c0: 48000005 bl 0xb8c4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8c4: 48000005 bl 0xb8c8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8c8: 48000005 bl 0xb8cc ---------------- IN: ret_from_kernel_thread 0xc00000000000b8cc: 48000005 bl 0xb8d0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8d0: 48000005 bl 0xb8d4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8d4: 48000005 bl 0xb8d8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8d8: 48000005 bl 0xb8dc ---------------- IN: ret_from_kernel_thread 0xc00000000000b8dc: 48000005 bl 0xb8e0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8e0: 48000005 bl 0xb8e4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8e4: 48000005 bl 0xb8e8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8e8: 48000005 bl 0xb8ec ---------------- IN: ret_from_kernel_thread 0xc00000000000b8ec: 48000005 bl 0xb8f0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8f0: 48000005 bl 0xb8f4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8f4: 48000005 bl 0xb8f8 ---------------- IN: ret_from_kernel_thread 0xc00000000000b8f8: 48000005 bl 0xb8fc ---------------- IN: ret_from_kernel_thread 0xc00000000000b8fc: 48000005 bl 0xb900 ---------------- IN: ret_from_kernel_thread 0xc00000000000b900: 48000005 bl 0xb904 ---------------- IN: ret_from_kernel_thread 0xc00000000000b904: 48000005 bl 0xb908 ---------------- IN: ret_from_kernel_thread 0xc00000000000b908: 48000005 bl 0xb90c ---------------- IN: ret_from_kernel_thread 0xc00000000000b90c: 48000005 bl 0xb910 ---------------- IN: ret_from_kernel_thread 0xc00000000000b910: 48000005 bl 0xb914 ---------------- IN: ret_from_kernel_thread 0xc00000000000b914: 48000005 bl 0xb918 ---------------- IN: ret_from_kernel_thread 0xc00000000000b918: 48000005 bl 0xb91c ---------------- IN: ret_from_kernel_thread 0xc00000000000b91c: 48000005 bl 0xb920 ---------------- IN: ret_from_kernel_thread 0xc00000000000b920: 48000005 bl 0xb924 ---------------- IN: ret_from_kernel_thread 0xc00000000000b924: 48000005 bl 0xb928 ---------------- IN: ret_from_kernel_thread 0xc00000000000b928: 48000005 bl 0xb92c ---------------- IN: ret_from_kernel_thread 0xc00000000000b92c: 48000005 bl 0xb930 ---------------- IN: ret_from_kernel_thread 0xc00000000000b930: 48000005 bl 0xb934 ---------------- IN: ret_from_kernel_thread 0xc00000000000b934: 48000005 bl 0xb938 ---------------- IN: ret_from_kernel_thread 0xc00000000000b938: 48000005 bl 0xb93c ---------------- IN: ret_from_kernel_thread 0xc00000000000b93c: 48000005 bl 0xb940 ---------------- IN: ret_from_kernel_thread 0xc00000000000b940: 48000005 bl 0xb944 ---------------- IN: ret_from_kernel_thread 0xc00000000000b944: 48000005 bl 0xb948 ---------------- IN: ret_from_kernel_thread 0xc00000000000b948: 48000005 bl 0xb94c ---------------- IN: ret_from_kernel_thread 0xc00000000000b94c: 48000005 bl 0xb950 ---------------- IN: ret_from_kernel_thread 0xc00000000000b950: 48000005 bl 0xb954 ---------------- IN: ret_from_kernel_thread 0xc00000000000b954: 48000005 bl 0xb958 ---------------- IN: ret_from_kernel_thread 0xc00000000000b958: 48000005 bl 0xb95c ---------------- IN: ret_from_kernel_thread 0xc00000000000b95c: 48000005 bl 0xb960 ---------------- IN: ret_from_kernel_thread 0xc00000000000b960: 48000005 bl 0xb964 ---------------- IN: ret_from_kernel_thread 0xc00000000000b964: 48000005 bl 0xb968 ---------------- IN: ret_from_kernel_thread 0xc00000000000b968: 48000005 bl 0xb96c ---------------- IN: ret_from_kernel_thread 0xc00000000000b96c: 48000005 bl 0xb970 ---------------- IN: ret_from_kernel_thread 0xc00000000000b970: 48000005 bl 0xb974 ---------------- IN: ret_from_kernel_thread 0xc00000000000b974: 48000005 bl 0xb978 ---------------- IN: ret_from_kernel_thread 0xc00000000000b978: 48000005 bl 0xb97c ---------------- IN: ret_from_kernel_thread 0xc00000000000b97c: 48000005 bl 0xb980 ---------------- IN: ret_from_kernel_thread 0xc00000000000b980: 48000005 bl 0xb984 ---------------- IN: ret_from_kernel_thread 0xc00000000000b984: 48000005 bl 0xb988 ---------------- IN: ret_from_kernel_thread 0xc00000000000b988: 48000005 bl 0xb98c ---------------- IN: ret_from_kernel_thread 0xc00000000000b98c: 48000005 bl 0xb990 ---------------- IN: ret_from_kernel_thread 0xc00000000000b990: 48000005 bl 0xb994 ---------------- IN: ret_from_kernel_thread 0xc00000000000b994: 48000005 bl 0xb998 ---------------- IN: ret_from_kernel_thread 0xc00000000000b998: 48000005 bl 0xb99c ---------------- IN: ret_from_kernel_thread 0xc00000000000b99c: 48000005 bl 0xb9a0 ---------------- IN: ret_from_kernel_thread 0xc00000000000b9a0: 48000005 bl 0xb9a4 ---------------- IN: ret_from_kernel_thread 0xc00000000000b9a4: 4800001c b 0xb9c0 Opcode 13 10 10 00 (4c400420) leaked temporaries ---------------- IN: ret_from_kernel_thread 0xc00000000000b9c0: 7d2803a6 mtlr r9 0xc00000000000b9c4: 39207fff li r9, 0x7fff 0xc00000000000b9c8: 7d2903a6 mtctr r9 0xc00000000000b9cc: 4c400420 bdzfctr lt ---------------- IN: __start 0xc000000000004700: 7db243a6 mtspr 0x112, r13 0xc000000000004704: 7db142a6 mfspr r13, 0x111 0xc000000000004708: f92d0080 std r9, 0x80(r13) 0xc00000000000470c: 7d20e2a6 mfspr r9, 0x380 0xc000000000004710: 7c421378 mr r2, r2 [...] ---------------- IN: __start 0xc000000000008efc: 894d097b lbz r10, 0x97b(r13) 0xc000000000008f00: 39600001 li r11, 1 0xc000000000008f04: 614a0001 ori r10, r10, 1 0xc000000000008f08: 996d097a stb r11, 0x97a(r13) 0xc000000000008f0c: 994d097b stb r10, 0x97b(r13) 0xc000000000008f10: 38610070 addi r3, r1, 0x70 0xc000000000008f14: 48019585 bl 0x22498 ---------------- IN: program_check_exception 0xc000000000022498: 7c0802a6 mflr r0 0xc00000000002249c: fbc1fff0 std r30, -0x10(r1) 0xc0000000000224a0: fbe1fff8 std r31, -8(r1) 0xc0000000000224a4: 7c7f1b78 mr r31, r3 0xc0000000000224a8: f8010010 std r0, 0x10(r1) 0xc0000000000224ac: f821ff91 stdu r1, -0x70(r1) 0xc0000000000224b0: e9230108 ld r9, 0x108(r3) 0xc0000000000224b4: 793e0020 clrldi r30, r9, 0x20 0xc0000000000224b8: 77ca0010 andis. r10, r30, 0x10 0xc0000000000224bc: 418200a4 beq 0x22560 ---------------- IN: program_check_exception 0xc000000000022560: 77ca0002 andis. r10, r30, 2 0xc000000000022564: 418200f4 beq 0x22658 ---------------- IN: program_check_exception 0xc000000000022658: 77ca0020 andis. r10, r30, 0x20 0xc00000000002265c: 4182004c beq 0x226a8 ---------------- IN: program_check_exception 0xc0000000000226a8: e93f0108 ld r9, 0x108(r31) 0xc0000000000226ac: 71294000 andi. r9, r9, 0x4000 0xc0000000000226b0: 41820074 beq 0x22724 ---------------- IN: program_check_exception 0xc000000000022724: 77c90004 andis. r9, r30, 4 0xc000000000022728: e8df0100 ld r6, 0x100(r31) 0xc00000000002272c: 38a00005 li r5, 5 0xc000000000022730: 4082ff40 bne 0x22670 ---------------- IN: program_check_exception 0xc000000000022734: 38a00001 li r5, 1 0xc000000000022738: 4bffff38 b 0x22670 ---------------- IN: program_check_exception 0xc000000000022670: 7fe4fb78 mr r4, r31 0xc000000000022674: 38600004 li r3, 4 0xc000000000022678: 4bfffed0 b 0x22548 ---------------- IN: program_check_exception 0xc000000000022548: 38210070 addi r1, r1, 0x70 0xc00000000002254c: e8010010 ld r0, 0x10(r1) 0xc000000000022550: ebc1fff0 ld r30, -0x10(r1) 0xc000000000022554: ebe1fff8 ld r31, -8(r1) 0xc000000000022558: 7c0803a6 mtlr r0 0xc00000000002255c: 4bfffe4c b 0x223a8 ---------------- IN: _exception 0xc0000000000223a8: 38e00000 li r7, 0 0xc0000000000223ac: 4bffffd4 b 0x22380 ---------------- IN: _exception_pkey 0xc000000000022380: e9240108 ld r9, 0x108(r4) 0xc000000000022384: 71294000 andi. r9, r9, 0x4000 0xc000000000022388: 40820014 bne 0x2239c ---------------- IN: _exception_pkey 0xc00000000002238c: 7c651b78 mr r5, r3 0xc000000000022390: 3c62ffd4 addis r3, r2, -0x2c 0xc000000000022394: 3863467e addi r3, r3, 0x467e 0xc000000000022398: 4bfffc6c b 0x22004 ---------------- IN: die 0xc000000000022004: 7c0802a6 mflr r0 0xc000000000022008: 48732b19 bl 0x754b20 ---------------- IN: die 0xc00000000002200c: f821ffc1 stdu r1, -0x40(r1) 0xc000000000022010: 7c7c1b78 mr r28, r3 0xc000000000022014: 7c9f2378 mr r31, r4 0xc000000000022018: 7cbe2b78 mr r30, r5 0xc00000000002201c: e9240140 ld r9, 0x140(r4) 0xc000000000022020: 792906e4 rldicr r9, r9, 0, 0x3b 0xc000000000022024: 2fa90100 cmpdi cr7, r9, 0x100 0xc000000000022028: 409e0058 bne cr7, 0x22080 ---------------- IN: die 0xc000000000022080: 3d220003 addis r9, r2, 3 0xc000000000022084: e9291d38 ld r9, 0x1d38(r9) 0xc000000000022088: 2fa90000 cmpdi cr7, r9, 0 0xc00000000002208c: 419effa0 beq cr7, 0x2202c ---------------- IN: die 0xc00000000002202c: 7fe3fb78 mr r3, r31 0xc000000000022030: 4bfff74d bl 0x2177c ---------------- IN: oops_begin 0xc00000000002177c: 7c0802a6 mflr r0 0xc000000000021780: fbe1fff8 std r31, -8(r1) 0xc000000000021784: f8010010 std r0, 0x10(r1) 0xc000000000021788: f821ffd1 stdu r1, -0x30(r1) 0xc00000000002178c: 480a42bd bl 0xc5a48 [...] ---------------- IN: console_flush_on_panic 0xc000000000121d98: 38210020 addi r1, r1, 0x20 0xc000000000121d9c: 39200000 li r9, 0 0xc000000000121da0: 3d42000c addis r10, r2, 0xc 0xc000000000121da4: e8010010 ld r0, 0x10(r1) 0xc000000000121da8: 912a282c stw r9, 0x282c(r10) 0xc000000000121dac: 7c0803a6 mtlr r0 0xc000000000121db0: 4bffe5d0 b 0x120380 ---------------- IN: panic_flush_kmsg_end 0xc000000000022348: 60000000 nop 0xc00000000002234c: 38210020 addi r1, r1, 0x20 0xc000000000022350: e8010010 ld r0, 0x10(r1) 0xc000000000022354: 7c0803a6 mtlr r0 0xc000000000022358: 4e800020 blr ---------------- IN: pseries_panic 0xc000000000096e9c: 60000000 nop 0xc000000000096ea0: e8610020 ld r3, 0x20(r1) 0xc000000000096ea4: 4bf97025 bl 0x2dec8 ---------------- IN: rtas_os_term 0xc00000000002dec8: 7c0802a6 mflr r0 0xc00000000002decc: 48726c59 bl 0x754b24 [...] Guest crashed Am I supposed to use different command line options to run this image? Thanks, Phil. [*] https://bugs.launchpad.net/bugs/1834613