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Stefano Stabellini 2a795389e0 arm/xen: fix xen_vcpu_info allocation alignment 
[ Upstream commit 7bf9a6b46549852a37e6d07e52c601c3c706b562 ]

xen_vcpu_info is a percpu area than needs to be mapped by Xen.
Currently, it could cross a page boundary resulting in Xen being unable
to map it:

[    0.567318] kernel BUG at arch/arm64/xen/../../arm/xen/enlighten.c:164!
[    0.574002] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP

Fix the issue by using __alloc_percpu and requesting alignment for the
memory allocation.

Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>

Link: https://lore.kernel.org/r/alpine.DEB.2.22.394.2311221501340.2053963@ubuntu-linux-20-04-desktop
Fixes: 24d5373dda7c ("arm/xen: Use alloc_percpu rather than __alloc_percpu")
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-18 12:10:55 +01:00
..
boot ARM: dts: qcom: mdm9615: populate vsdcc fixed regulator 2024-11-18 11:43:02 +01:00
common Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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crypto Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
include ARM: 9320/1: fix stack depot IRQ stack filter 2024-11-18 11:43:14 +01:00
kernel Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
lib ARM: 9321/1: memset: cast the constant byte to unsigned char 2024-11-18 11:43:03 +01:00
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xen arm/xen: fix xen_vcpu_info allocation alignment 2024-11-18 12:10:55 +01:00
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