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authorThomas Gleixner <tglx@linutronix.de>2017-09-13 23:29:32 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-09-25 20:51:54 +0200
commitdccfe3147b42b78458ab8e4440822c805ee76d72 (patch)
tree8abff1331b010bfdbafbc078e2a22b7065efa2f3 /arch/x86/include/asm/irqdomain.h
parent029c6e1c9df776fe1b2ba756a28fb65e9f9e9f69 (diff)
downloadlinux-0-day-dccfe3147b42b78458ab8e4440822c805ee76d72.tar.gz
linux-0-day-dccfe3147b42b78458ab8e4440822c805ee76d72.tar.xz
x86/vector: Simplify vector move cleanup
The vector move cleanup needs to walk the vector space and do a lot of sanity checks to find a vector to cleanup. With single CPU affinities this can be simplified and made more robust by queueing the vector configuration which needs to be cleaned up in a hlist on the CPU which was the previous target. That removes all the race conditions because the cleanup either finds a valid list entry or not. The latter happens when the interrupt was torn down before the cleanup handler was able to run. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213154.622727892@linutronix.de
Diffstat (limited to 'arch/x86/include/asm/irqdomain.h')
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