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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _ASM_S390_MSI_H
- #define _ASM_S390_MSI_H
- #include <asm-generic/msi.h>
- /*
- * Work around S390 not using irq_domain at all so we can't set
- * IRQ_DOMAIN_FLAG_ISOLATED_MSI. See for an explanation how it works:
- *
- * https://lore.kernel.org/r/31af8174-35e9-ebeb-b9ef-74c90d4bfd93@linux.ibm.com/
- *
- * Note this is less isolated than the ARM/x86 versions as userspace can trigger
- * MSI belonging to kernel devices within the same gisa.
- */
- #define arch_is_isolated_msi() true
- #endif
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