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irqchip/gic-v3-its: Only emit VSYNC if targetting a valid collection 

Similarily to the SYNC operation, it must be verified that the VPE
targetted by a VLPI is backed by a valid collection in the GIC driver data
structures.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Cc: Sumit Garg <sumit.garg@linaro.org>
Link: https://lkml.kernel.org/r/20180622095254.5906-7-marc.zyngier@arm.com
4.18.x+fslc
Marc Zyngier 2018-06-22 10:52:53 +01:00 committed by Thomas Gleixner
parent 83559b47cd
commit 205e065d91
1 changed files with 13 additions and 5 deletions
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18
drivers/irqchip/irq-gic-v3-its.c
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@ -190,6 +190,14 @@ static struct its_collection *valid_col(struct its_collection *col)
return col;
}
static struct its_vpe *valid_vpe(struct its_node *its, struct its_vpe *vpe)
{
if (valid_col(its->collections + vpe->col_idx))
return vpe;
return NULL;
}
/*
* ITS command descriptors - parameters to be encoded in a command
* block.
@ -562,7 +570,7 @@ static struct its_vpe *its_build_vinvall_cmd(struct its_node *its,
its_fixup_cmd(cmd);
return desc->its_vinvall_cmd.vpe;
return valid_vpe(its, desc->its_vinvall_cmd.vpe);
}
static struct its_vpe *its_build_vmapp_cmd(struct its_node *its,
@ -584,7 +592,7 @@ static struct its_vpe *its_build_vmapp_cmd(struct its_node *its,
its_fixup_cmd(cmd);
return desc->its_vmapp_cmd.vpe;
return valid_vpe(its, desc->its_vmapp_cmd.vpe);
}
static struct its_vpe *its_build_vmapti_cmd(struct its_node *its,
@ -607,7 +615,7 @@ static struct its_vpe *its_build_vmapti_cmd(struct its_node *its,
its_fixup_cmd(cmd);
return desc->its_vmapti_cmd.vpe;
return valid_vpe(its, desc->its_vmapti_cmd.vpe);
}
static struct its_vpe *its_build_vmovi_cmd(struct its_node *its,
@ -630,7 +638,7 @@ static struct its_vpe *its_build_vmovi_cmd(struct its_node *its,
its_fixup_cmd(cmd);
return desc->its_vmovi_cmd.vpe;
return valid_vpe(its, desc->its_vmovi_cmd.vpe);
}
static struct its_vpe *its_build_vmovp_cmd(struct its_node *its,
@ -648,7 +656,7 @@ static struct its_vpe *its_build_vmovp_cmd(struct its_node *its,
its_fixup_cmd(cmd);
return desc->its_vmovp_cmd.vpe;
return valid_vpe(its, desc->its_vmovp_cmd.vpe);
}
static u64 its_cmd_ptr_to_offset(struct its_node *its,