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linux-stable/drivers/xen
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Henry Wang 5d626f2b87 drivers/xen: Improve the late XenStore init protocol 
[ Upstream commit a3607581cd ]

Currently, the late XenStore init protocol is only triggered properly
for the case that HVM_PARAM_STORE_PFN is ~0ULL (invalid). For the
case that XenStore interface is allocated but not ready (the connection
status is not XENSTORE_CONNECTED), Linux should also wait until the
XenStore is set up properly.

Introduce a macro to describe the XenStore interface is ready, use
it in xenbus_probe_initcall() to select the code path of doing the
late XenStore init protocol or not. Since now we have more than one
condition for XenStore late init, rework the check in xenbus_probe()
for the free_irq().

Take the opportunity to enhance the check of the allocated XenStore
interface can be properly mapped, and return error early if the
memremap() fails.

Fixes: 5b3353949e ("xen: add support for initializing xenstore later as HVM domain")
Signed-off-by: Henry Wang <xin.wang2@amd.com>
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20240517011516.1451087-1-xin.wang2@amd.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-06-12 11:03:53 +02:00
..
events xen/events: close evtchn after mapping cleanup 2024-03-06 14:45:20 +00:00
xen-pciback xen-pciback: Consider INTx disabled when MSI/MSI-X is enabled 2023-11-20 11:52:01 +01:00
xenbus drivers/xen: Improve the late XenStore init protocol 2024-06-12 11:03:53 +02:00
xenfs
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Kconfig
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Makefile
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acpi.c
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arm-device.c
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balloon.c
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biomerge.c
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cpu_hotplug.c
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dbgp.c
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efi.c
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evtchn.c
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features.c
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gntalloc.c
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gntdev-common.h
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gntdev-dmabuf.c xen/gntdev: Fix the abuse of underlying struct page in DMA-buf import 2024-02-05 20:12:58 +00:00
gntdev-dmabuf.h
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gntdev.c
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grant-dma-iommu.c
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grant-dma-ops.c
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grant-table.c
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manage.c
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mcelog.c
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mem-reservation.c
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pci.c
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pcpu.c
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platform-pci.c xen: simplify evtchn_do_upcall() call maze 2023-12-08 08:51:20 +01:00
privcmd-buf.c
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privcmd.c
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privcmd.h
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pvcalls-back.c
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pvcalls-front.c
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pvcalls-front.h
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swiotlb-xen.c swiotlb-xen: provide the "max_mapping_size" method 2023-12-03 07:32:11 +01:00
sys-hypervisor.c
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time.c
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unpopulated-alloc.c
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xen-acpi-pad.c
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xen-acpi-processor.c
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xen-balloon.c
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xen-front-pgdir-shbuf.c
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xen-scsiback.c
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xlate_mmu.c
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