user/sven/linux.git/include/linux/irqchip, branch v5.10.230

irqchip/gic-v4: Don't allow a VMOVP on a dying VPE

2024-10-22T13:39:29Z

commit 1442ee0011983f0c5c4b92380e6853afb513841a upstream. Kunkun Jiang reported that there is a small window of opportunity for userspace to force a change of affinity for a VPE while the VPE has already been unmapped, but the corresponding doorbell interrupt still visible in /proc/irq/. Plug the race by checking the value of vmapp_count, which tracks whether the VPE is mapped ot not, and returning an error in this case. This involves making vmapp_count common to both GICv4.1 and its v4.0 ancestor. Fixes: 64edfaa9a234 ("irqchip/gic-v4.1: Implement the v4.1 flavour of VMAPP") Reported-by: Kunkun Jiang Signed-off-by: Marc Zyngier Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/c182ece6-2ba0-ce4f-3404-dba7a3ab6c52@huawei.com Link: https://lore.kernel.org/all/20241002204959.2051709-1-maz@kernel.org Signed-off-by: Greg Kroah-Hartman

include/: replace HTTP links with HTTPS ones

2020-08-12T17:57:59Z

Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Signed-off-by: Alexander A. Klimov Signed-off-by: Andrew Morton Reviewed-by: Kees Cook Link: http://lkml.kernel.org/r/20200726110117.16346-1-grandmaster@al2klimov.de Signed-off-by: Linus Torvalds

irqchip: irq-bcm2836.h: drop a duplicated word

2020-07-27T07:55:03Z

Drop the repeated word "the" in a comment. Signed-off-by: Randy Dunlap Signed-off-by: Marc Zyngier Cc: Thomas Gleixner Cc: Jason Cooper Cc: Marc Zyngier Link: https://lore.kernel.org/r/20200719002853.20419-1-rdunlap@infradead.org

irqchip/gic-v3: Remove unused register definition

2020-07-27T07:55:03Z

[maz: The GICv3 spec has evolved quite a bit since the draft the Linux driver was written against, and some register definitions are simply gone] As per the GICv3 specification, GIC{D,R}_SEIR are not assigned and the locations (0x0068) are actually Reserved. GICR_MOV{LPI,ALL}R are two IMP DEF registers and might be defined by some specific micro-architecture. As they're not used anywhere in the kernel, just drop all of them. Signed-off-by: Zenghui Yu [maz: added context explaination] Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20200630134126.880-1-yuzenghui@huawei.com

irqchip/vic: Cut down the external API

2020-06-27T10:54:54Z

There are registers and functions in the header file that are only used inside the driver. Move these into the driver. Signed-off-by: Linus Walleij Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20200607215124.48638-2-linus.walleij@linaro.org

irqchip/vic: Drop cascaded intialization call

2020-06-27T10:54:47Z

We got rid of the last user of the cascaded intialization from board files so drop this API. Signed-off-by: Linus Walleij Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20200607215124.48638-1-linus.walleij@linaro.org

irqchip/gic-v4.1: Add support for VPENDBASER's Dirty+Valid signaling

2020-04-16T09:28:12Z

When a vPE is made resident, the GIC starts parsing the virtual pending table to deliver pending interrupts. This takes place asynchronously, and can at times take a long while. Long enough that the vcpu enters the guest and hits WFI before any interrupt has been signaled yet. The vcpu then exits, blocks, and now gets a doorbell. Rince, repeat. In order to avoid the above, a (optional on GICv4, mandatory on v4.1) feature allows the GIC to feedback to the hypervisor whether it is done parsing the VPT by clearing the GICR_VPENDBASER.Dirty bit. The hypervisor can then wait until the GIC is ready before actually running the vPE. Plug the detection code as well as polling on vPE schedule. While at it, tidy-up the kernel message that displays the GICv4 optional features. Reviewed-by: Zenghui Yu Signed-off-by: Marc Zyngier

Merge branch 'irq/gic-v4.1' into irq/irqchip-next

2020-03-24T12:43:47Z

Signed-off-by: Marc Zyngier

irqchip/gic-v4.1: Add VSGI property setup

2020-03-24T12:15:51Z

Add the SGI configuration entry point for KVM to use. Signed-off-by: Marc Zyngier Reviewed-by: Zenghui Yu Link: https://lore.kernel.org/r/20200304203330.4967-16-maz@kernel.org

irqchip/gic-v4.1: Add VSGI allocation/teardown

2020-03-24T12:15:51Z

Allocate per-VPE SGIs when initializing the GIC-specific part of the VPE data structure. Signed-off-by: Marc Zyngier Reviewed-by: Zenghui Yu Link: https://lore.kernel.org/r/20200304203330.4967-15-maz@kernel.org