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| author | Juergen Gross <[email protected]> | 2023-11-24 07:48:52 +0000 |
|---|---|---|
| committer | Juergen Gross <[email protected]> | 2023-11-28 11:47:11 +0000 |
| commit | db2832309a82b9acc4b8cc33a1831d36507ec13e (patch) | |
| tree | 372b03193c3333e5cef2b001c67adcca0944c189 /tools/testing/radix-tree/linux.c | |
| parent | arm/xen: fix xen_vcpu_info allocation alignment (diff) | |
| download | kernel-db2832309a82b9acc4b8cc33a1831d36507ec13e.tar.gz kernel-db2832309a82b9acc4b8cc33a1831d36507ec13e.zip | |
x86/xen: fix percpu vcpu_info allocation
Today the percpu struct vcpu_info is allocated via DEFINE_PER_CPU(),
meaning that it could cross a page boundary. In this case registering
it with the hypervisor will fail, resulting in a panic().
This can easily be fixed by using DEFINE_PER_CPU_ALIGNED() instead,
as struct vcpu_info is guaranteed to have a size of 64 bytes, matching
the cache line size of x86 64-bit processors (Xen doesn't support
32-bit processors).
Fixes: 5ead97c84fa7 ("xen: Core Xen implementation")
Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Boris Ostrovsky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Juergen Gross <[email protected]>
Diffstat (limited to 'tools/testing/radix-tree/linux.c')
0 files changed, 0 insertions, 0 deletions