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x-conformance=sidf_compatible IronPort-SDR: AbeTJRnocntcbpq2ku7Rbj06wW0cbD3x5M8AYQfu4wfcG0Nd9DaCsT28HgkGxcO4C998Fc4bs5 OhZgut+/RAoh8ITL+OLjpvABtUt6xpPbPHAqO5NL5DrOcp+GUO7ThQlE8JzhkdZQwFCDEnrwNv BpqpwbT+wWmACSTL8trTpI2jR8k3Cv8454PqT8T5yAYem3QS+C/nJiey9rlk7C/v3X10QnED3N HvIvGN9O+63PPSCmgJLzRimqOZ2+fG2QOvEfpJ/SHPGnldKXFYtpVc/ri12Sr8zdaErsFPdI0p vq4= X-SBRS: 2.7 X-MesageID: 13255828 X-Ironport-Server: esa5.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,479,1574139600"; d="scan'208";a="13255828" From: Roger Pau Monne To: Date: Mon, 24 Feb 2020 11:46:43 +0100 Message-ID: <20200224104645.96381-4-roger.pau@citrix.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200224104645.96381-1-roger.pau@citrix.com> References: <20200224104645.96381-1-roger.pau@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v3 3/5] x86: track when in #MC context X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , Wei Liu , Jan Beulich , Roger Pau Monne Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Add helpers to track when executing in #MC context. This is modeled after the in_irq helpers. Note that there are no users of in_mc() introduced by the change, further users will be added by followup changes. Signed-off-by: Roger Pau Monn=C3=A9 --- Changes since v2: - Move definition of mc_count to x86 hardirq.h. --- xen/arch/x86/cpu/mcheck/mce.c | 2 ++ xen/include/asm-x86/hardirq.h | 6 ++++++ 2 files changed, 8 insertions(+) diff --git a/xen/arch/x86/cpu/mcheck/mce.c b/xen/arch/x86/cpu/mcheck/mce.c index d61e582af3..93ed5752ac 100644 --- a/xen/arch/x86/cpu/mcheck/mce.c +++ b/xen/arch/x86/cpu/mcheck/mce.c @@ -93,7 +93,9 @@ void x86_mce_vector_register(x86_mce_vector_t hdlr) =20 void do_machine_check(const struct cpu_user_regs *regs) { + mc_enter(); _machine_check_vector(regs); + mc_exit(); } =20 /* diff --git a/xen/include/asm-x86/hardirq.h b/xen/include/asm-x86/hardirq.h index 6ccce75881..16dbe27de4 100644 --- a/xen/include/asm-x86/hardirq.h +++ b/xen/include/asm-x86/hardirq.h @@ -8,6 +8,7 @@ typedef struct { unsigned int __softirq_pending; unsigned int __local_irq_count; unsigned int nmi_count; + unsigned int mc_count; bool_t __mwait_wakeup; } __cacheline_aligned irq_cpustat_t; =20 @@ -23,6 +24,11 @@ typedef struct { #define nmi_enter() (nmi_count(smp_processor_id())++) #define nmi_exit() (nmi_count(smp_processor_id())--) =20 +#define mc_count(cpu) __IRQ_STAT((cpu), mc_count) +#define in_mc() (mc_count(smp_processor_id()) !=3D 0) +#define mc_enter() (mc_count(smp_processor_id())++) +#define mc_exit() (mc_count(smp_processor_id())--) + void ack_bad_irq(unsigned int irq); =20 extern void apic_intr_init(void); --=20 2.25.0 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel