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linux-next/arch/s390
Pierre Morel 87e28a15c4 KVM: s390: diag9c (directed yield) forwarding
When we intercept a DIAG_9C from the guest we verify that the
target real CPU associated with the virtual CPU designated by
the guest is running and if not we forward the DIAG_9C to the
target real CPU.

To avoid a diag9c storm we allow a maximal rate of diag9c forwarding.

The rate is calculated as a count per second defined as a new
parameter of the s390 kvm module: diag9c_forwarding_hz .

The default value of 0 is to not forward diag9c.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Link: https://lore.kernel.org/r/1613997661-22525-2-git-send-email-pmorel@linux.ibm.com
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2021-03-09 10:16:26 +01:00
..
appldata s390/appldata: use struct_size() helper 2020-06-29 16:32:34 +02:00
boot s390: uv: Fix sysfs max number of VCPUs reporting 2021-01-27 13:00:04 +01:00
configs Modules updates for v5.12 2021-02-23 10:15:33 -08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
hypfs s390/hypfs: use store_tod_clock_ext() 2021-02-13 17:17:55 +01:00
include KVM: s390: diag9c (directed yield) forwarding 2021-03-09 10:16:26 +01:00
kernel KVM: s390: diag9c (directed yield) forwarding 2021-03-09 10:16:26 +01:00
kvm KVM: s390: diag9c (directed yield) forwarding 2021-03-09 10:16:26 +01:00
lib s390: convert to generic entry 2021-01-19 12:29:26 +01:00
mm s390 updates for the 5.12 merge window #2 2021-02-26 14:12:32 -08:00
net bpf: Rename BPF_XADD and prepare to encode other atomics in .imm 2021-01-14 18:34:29 -08:00
pci s390 updates for the 5.12 merge window 2021-02-21 13:40:06 -08:00
purgatory - Add support for the hugetlb_cma command line option to allocate gigantic 2020-12-14 16:22:26 -08:00
tools s390/opcodes: rename selhhhr to selfhr 2021-02-24 00:31:22 +01:00
Kbuild s390/numa: move code to arch/s390/kernel 2020-08-11 18:16:55 +02:00
Kconfig Rework of the X86 irq stack handling: 2021-02-24 16:32:23 -08:00
Kconfig.debug s390: convert to generic entry 2021-01-19 12:29:26 +01:00
Makefile arch: s390: Remove CONFIG_OPROFILE support 2021-01-29 10:05:51 +05:30