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author | Henry Wang <xin.wang2@amd.com> | 2024-05-17 04:15:16 +0300 |
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committer | Juergen Gross <jgross@suse.com> | 2024-05-23 13:41:18 +0300 |
commit | a3607581cd49c17128a486a526a36a97bafcb2bb (patch) | |
tree | e6bcd3b13fbd0cc92776de837bf3b4b61cb79dbe /mm/memcontrol.c | |
parent | 89af61fb8f0f96646e1462246a825c1268ba70ba (diff) | |
download | linux-a3607581cd49c17128a486a526a36a97bafcb2bb.tar.xz |
drivers/xen: Improve the late XenStore init protocol
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: 5b3353949e89 ("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>
Diffstat (limited to 'mm/memcontrol.c')
0 files changed, 0 insertions, 0 deletions