KVM: PPC: Book3S HV: Handle pending exceptions on guest entry with MSR_EE

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[ Upstream commit ecd10702ba ]

Commit 026728dc5d ("KVM: PPC: Book3S HV P9: Inject pending xive
interrupts at guest entry") changed guest entry so that if external
interrupts are enabled, BOOK3S_IRQPRIO_EXTERNAL is not tested for. Test
for this regardless of MSR_EE.

For an L1 host, do not inject an interrupt, but always
use LPCR_MER. If the L0 desires it can inject an interrupt.

Fixes: 026728dc5d ("KVM: PPC: Book3S HV P9: Inject pending xive interrupts at guest entry")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[jpn: use kvmpcc_get_msr(), write commit message]
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231201132618.555031-7-vaibhav@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Nicholas Piggin 2023-12-01 18:56:11 +05:30 • committed by Greg Kroah-Hartman

parent cd36bd5ff1

commit e74686601c

1 changed files with 12 additions and 6 deletions

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arch/powerpc/kvm/book3s_hv.c

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