Git Repo - linux.git/commit

]> Git Repo - linux.git/commit

author	QingFeng Hao <[email protected]>
	Fri, 29 Sep 2017 10:41:51 +0000 (12:41 +0200)
committer	Martin Schwidefsky <[email protected]>
	Mon, 9 Oct 2017 09:15:35 +0000 (11:15 +0200)
commit	9fb6c9b3fea1b1d1c6f14178373e8f7235f3b681
tree	9b530f5034bad26c87adf9b17919d01438e20e18	tree \| snapshot
parent	b7c92f1a4e131e459bcf53a570e7265e5ce64455	commit \| diff

s390/sthyi: add cache to store hypervisor info

STHYI requires extensive locking in the higher hypervisors and is
very computational/memory expensive. Therefore we cache the retrieved
hypervisor info whose valid period is 1s with mutex to allow concurrent
access. rw semaphore can't benefit here due to cache line bounce.

Signed-off-by: QingFeng Hao <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>

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arch/s390/include/asm/kvm_host.h		diff \| blob \| blame \| history
arch/s390/kernel/sthyi.c		diff \| blob \| blame \| history
arch/s390/kvm/intercept.c		diff \| blob \| blame \| history
arch/s390/kvm/kvm-s390.c		diff \| blob \| blame \| history