x86/msi: Provide msi message shadow structs

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Create shadow structs with named bitfields for msi_msg data, address_lo and
address_hi and use them in the MSI message composer.

Provide a function to retrieve the destination ID. This could be inline,
but that'd create a circular header dependency.

[dwmw2: fix bitfields not all to be a union]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-13-dwmw2@infradead.org

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This commit is contained in:

Thomas Gleixner 2020-10-24 22:35:12 +01:00

parent 8073c1ac82

commit 6285aa5073

2 changed files with 68 additions and 16 deletions

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49

arch/x86/include/asm/msi.h

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35

arch/x86/kernel/apic/apic.c

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