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[94.39.187.56]) by smtp.gmail.com with ESMTPSA id s26sm8814533wra.66.2017.02.24.09.40.43 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 24 Feb 2017 09:40:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:subject:date:message-id:in-reply-to:references; bh=Q7A53AyUw39ic4/yYr/A/qITY0+/SrC7A4JBq7Fj6i8=; b=ZKQ/4lqNlQkTVB7YbjtMVKj949bwfsT0C/O+vITpwqNxuOfxLPicmow6qCkwl/rgJA jvfEqP5VCEqF3RJVVdib60ScETsMIR1m1agn5F6UyHd0zdtyzbhwwynLbtWbtSmscBsk vsFInrVuv1t/muARQFY+zLAY9iCD2GQhYg9/irhirE7VpgUPEoveHK3/nHT+HIH6DnJO vsY76UUgH9lLwoTtwcGmmuZYLX+x2c5wroBU29jxldDPiStPX+rsILEWQSbYtVqwMB2A rCpgg9KgOWRhfH3F2fQoLIm1FS2ILhVuQCiYbLo4IkyalGFUQAA1Ccl0UYX/Ywhmw0nX ev7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:subject:date:message-id :in-reply-to:references; bh=Q7A53AyUw39ic4/yYr/A/qITY0+/SrC7A4JBq7Fj6i8=; b=JQ9T2MK3kWT9LQVEoIwJ4fMGOuNBiw3Q8OK24U1UONgx+glX+GQW3WlL5As10uTMnG fGUjiRc4SjhEelwVqLS1ODdYXlK6ICRFzQbo7cnwKKi1T98m8RK5i2Cux7Myb97Kk25p B5fhLS/56barEE0I+EzArkoGaCl8gMglmkiEfItTysQqGj/+sW54cbWyS7lltaunaIyL Egxyc/OTnDNRn95Fluya6JOmI24YpGdmQ+YA03k26GDRxGNLHbGxo4ipler6yri9WP3g BPgNkdDCM9MTorHLcuOLNoF5k4mpyisB8vNeN8xGyn87uNIysD+ZFqf8F+oDvrF0cfwi jzLA== X-Gm-Message-State: AMke39m9Kms0sfLw2fM/OCnTNcIod1UN2DL5/Nodi3EVdQcOc1U2IO7o81GbXgNO6U8uYg== X-Received: by 10.223.179.78 with SMTP id k14mr4138526wrd.34.1487958044062; Fri, 24 Feb 2017 09:40:44 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Fri, 24 Feb 2017 18:40:22 +0100 Message-Id: <1487958030-51417-10-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1487958030-51417-1-git-send-email-pbonzini@redhat.com> References: <1487958030-51417-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:400c:c0c::244 Subject: [Qemu-devel] [PULL 09/17] KVM: remove kvm_arch_on_sigbus X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Build it on kvm_arch_on_sigbus_vcpu instead. They do the same for "action optional" SIGBUSes, and the main thread should never get "action required" SIGBUSes because it blocks the signal. Signed-off-by: Paolo Bonzini --- include/sysemu/kvm.h | 1 - kvm-all.c | 9 ++++++++- target/arm/kvm.c | 5 ----- target/i386/kvm.c | 40 +++++----------------------------------- target/mips/kvm.c | 6 ------ target/ppc/kvm.c | 5 ----- target/s390x/kvm.c | 5 ----- 7 files changed, 13 insertions(+), 58 deletions(-) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 3045ee7..6ecb61c 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -358,7 +358,6 @@ bool kvm_vcpu_id_is_valid(int vcpu_id); unsigned long kvm_arch_vcpu_id(CPUState *cpu); =20 int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr); -int kvm_arch_on_sigbus(int code, void *addr); =20 void kvm_arch_init_irq_routing(KVMState *s); =20 diff --git a/kvm-all.c b/kvm-all.c index 0c94637..a433ad3 100644 --- a/kvm-all.c +++ b/kvm-all.c @@ -2391,6 +2391,7 @@ int kvm_set_signal_mask(CPUState *cpu, const sigset_t= *sigset) =20 return r; } + int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) { return kvm_arch_on_sigbus_vcpu(cpu, code, addr); @@ -2398,7 +2399,13 @@ int kvm_on_sigbus_vcpu(CPUState *cpu, int code, void= *addr) =20 int kvm_on_sigbus(int code, void *addr) { - return kvm_arch_on_sigbus(code, addr); + /* Action required MCE kills the process if SIGBUS is blocked. Because + * that's what happens in the I/O thread, where we handle MCE via sign= alfd, + * we can only get action optional here. + */ + assert(code !=3D BUS_MCEERR_AR); + kvm_arch_on_sigbus_vcpu(first_cpu, code, addr); + return 0; } =20 int kvm_create_device(KVMState *s, uint64_t type, bool test) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index c00b94e..6f2d590 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -564,11 +564,6 @@ int kvm_arch_on_sigbus_vcpu(CPUState *cs, int code, vo= id *addr) return 1; } =20 -int kvm_arch_on_sigbus(int code, void *addr) -{ - return 1; -} - /* The #ifdef protections are until 32bit headers are imported and can * be removed once both 32 and 64 bit reach feature parity. */ diff --git a/target/i386/kvm.c b/target/i386/kvm.c index f49a786..2adf992 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -462,14 +462,13 @@ int kvm_arch_on_sigbus_vcpu(CPUState *c, int code, vo= id *addr) ram_addr_t ram_addr; hwaddr paddr; =20 + /* If we get an action required MCE, it has been injected by KVM + * while the VM was running. An action optional MCE instead should + * be coming from the main thread, which qemu_init_sigbus identifies + * as the "early kill" thread. + */ assert(code =3D=3D BUS_MCEERR_AR || code =3D=3D BUS_MCEERR_AO); =20 - /* Because the MCE happened while running the VCPU, KVM could have - * injected action required MCEs too. Action optional MCEs should - * be delivered to the main thread, which qemu_init_sigbus identifies - * as the "early kill" thread, but if we get one for whatever reason - * we just handle it just like the main thread would. - */ if ((env->mcg_cap & MCG_SER_P) && addr) { ram_addr =3D qemu_ram_addr_from_host(addr); if (ram_addr !=3D RAM_ADDR_INVALID && @@ -491,35 +490,6 @@ int kvm_arch_on_sigbus_vcpu(CPUState *c, int code, voi= d *addr) return 0; } =20 -int kvm_arch_on_sigbus(int code, void *addr) -{ - X86CPU *cpu =3D X86_CPU(first_cpu); - - assert(code =3D=3D BUS_MCEERR_AR || code =3D=3D BUS_MCEERR_AO); - - if (code =3D=3D BUS_MCEERR_AR) { - hardware_memory_error(); - } - - /* Hope we are lucky for AO MCE */ - if ((cpu->env.mcg_cap & MCG_SER_P) && addr) { - ram_addr_t ram_addr; - hwaddr paddr; - - ram_addr =3D qemu_ram_addr_from_host(addr); - if (ram_addr !=3D RAM_ADDR_INVALID && - kvm_physical_memory_addr_from_host(first_cpu->kvm_state, - addr, &paddr)) { - kvm_hwpoison_page_add(ram_addr); - kvm_mce_inject(X86_CPU(first_cpu), paddr, code); - } - - fprintf(stderr, "Hardware memory error for memory used by " - "QEMU itself instead of guest system!: %p\n", addr); - } - return 0; -} - static int kvm_inject_mce_oldstyle(X86CPU *cpu) { CPUX86State *env =3D &cpu->env; diff --git a/target/mips/kvm.c b/target/mips/kvm.c index 998c341..3e686e7 100644 --- a/target/mips/kvm.c +++ b/target/mips/kvm.c @@ -186,12 +186,6 @@ int kvm_arch_on_sigbus_vcpu(CPUState *cs, int code, vo= id *addr) return 1; } =20 -int kvm_arch_on_sigbus(int code, void *addr) -{ - DPRINTF("%s\n", __func__); - return 1; -} - void kvm_arch_init_irq_routing(KVMState *s) { } diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c index 663d2e7..80f2728 100644 --- a/target/ppc/kvm.c +++ b/target/ppc/kvm.c @@ -2563,11 +2563,6 @@ int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code,= void *addr) return 1; } =20 -int kvm_arch_on_sigbus(int code, void *addr) -{ - return 1; -} - void kvm_arch_init_irq_routing(KVMState *s) { } diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c index 2536780..92cf6d4 100644 --- a/target/s390x/kvm.c +++ b/target/s390x/kvm.c @@ -2108,11 +2108,6 @@ int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code,= void *addr) return 1; } =20 -int kvm_arch_on_sigbus(int code, void *addr) -{ - return 1; -} - void kvm_s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr, uint32_t io_int_parm, uint32_t io_int_word) --=20 1.8.3.1