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Date: Tue, 10 Oct 2017 13:51:33 +0100 From: Marc Zyngier <marc.zyngier@....com> To: linux-kernel@...r.kernel.org Cc: Thomas Gleixner <tglx@...utronix.de>, Jason Cooper <jason@...edaemon.net>, Shanker Donthineni <shankerd@...eaurora.org>, Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>, Christoffer Dall <cdall@...aro.org>, Eric Auger <eric.auger@...hat.com> Subject: [PATCH 06/10] irqchip/gic-v3-its: Make its_send_vinvall operate on a single ITS Currently, its_send_vinvall operates on all ITSs. As we're about to try and limit the amount of commands we send to ITSs that are not involved in dealing with a given VM, let's redefine that primitive so that it takes a target ITS as a parameter. Signed-off-by: Marc Zyngier <marc.zyngier@....com> --- drivers/irqchip/irq-gic-v3-its.c | 33 +++++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 10 deletions(-) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 8a1f985c8558..202f43b30bd3 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -977,18 +977,12 @@ static void its_send_vmovp(struct its_vpe *vpe) raw_spin_unlock_irqrestore(&vmovp_lock, flags); } -static void its_send_vinvall(struct its_vpe *vpe) +static void its_send_vinvall(struct its_node *its, struct its_vpe *vpe) { struct its_cmd_desc desc; - struct its_node *its; desc.its_vinvall_cmd.vpe = vpe; - - list_for_each_entry(its, &its_nodes, entry) { - if (!its->is_v4) - continue; - its_send_single_vcommand(its, its_build_vinvall_cmd, &desc); - } + its_send_single_vcommand(its, its_build_vinvall_cmd, &desc); } /* @@ -2461,6 +2455,18 @@ static void its_vpe_deschedule(struct its_vpe *vpe) } } +static void its_vpe_invall(struct its_vpe *vpe) +{ + struct its_node *its; + + list_for_each_entry(its, &its_nodes, entry) { + if (!its->is_v4) + continue; + + its_send_vinvall(its, vpe); + } +} + static int its_vpe_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) { struct its_vpe *vpe = irq_data_get_irq_chip_data(d); @@ -2476,7 +2482,7 @@ static int its_vpe_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) return 0; case INVALL_VPE: - its_send_vinvall(vpe); + its_vpe_invall(vpe); return 0; default: @@ -2705,11 +2711,18 @@ static void its_vpe_irq_domain_activate(struct irq_domain *domain, struct irq_data *d) { struct its_vpe *vpe = irq_data_get_irq_chip_data(d); + struct its_node *its; /* Map the VPE to the first possible CPU */ vpe->col_idx = cpumask_first(cpu_online_mask); its_send_vmapp(vpe, true); - its_send_vinvall(vpe); + + list_for_each_entry(its, &its_nodes, entry) { + if (!its->is_v4) + continue; + + its_send_vinvall(its, vpe); + } } static void its_vpe_irq_domain_deactivate(struct irq_domain *domain, -- 2.11.0
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