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From: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman <mpe@ellerman.id.au>,
	Christophe Leroy <chleroy@kernel.org>,
	Anushree Mathur <anushree.mathur@linux.ibm.com>,
	Venkat Rao Bagalkote <venkat88@linux.ibm.com>,
	Harsh Prateek Bora <harshpb@linux.ibm.com>,
	Madhavan Srinivasan <maddy@linux.ibm.com>,
	Shrikanth Hegde <sshegde@linux.ibm.com>,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Subject: [RFC 0/3] KVM: PPC: BE guest-exit fixes and nestedv2 vCPU limit
Date: Fri, 11 Sep 2026 10:26:44 +0530	[thread overview]
Message-ID: <cover.1789099725.git.ritesh.list@gmail.com> (raw)

These issues were identified while adding kvm powerpc selftests infrastructure
support [1]. Patch-1 and Patch-2 were identified while running the selftests on
Qemu+TCG+powernv+BE, while Patch-3 can also be reproduced on a real pseries LPAR
with nestedv2 capabilities.

[1]: https://lore.kernel.org/linuxppc-dev/cover.1789097569.git.ritesh.list@gmail.com/

Ritesh Harjani (IBM) (3):
  KVM: PPC: Book3S HV: Read EX_DSISR as a 32-bit field on guest exit
  KVM: PPC: Don't call __ffs() on an empty pending_exceptions bitmap
  KVM: PPC: Book3S HV nestedv2: cap max vcpus to PAPR limit

 arch/powerpc/include/asm/kvm_host.h   |  1 +
 arch/powerpc/kvm/book3s.c             | 22 ++++++++++++----------
 arch/powerpc/kvm/book3s_hv_p9_entry.c | 13 +++++++++++--
 arch/powerpc/kvm/powerpc.c            |  6 ++++++
 4 files changed, 30 insertions(+), 12 deletions(-)

--
2.39.5



             reply	other threads:[~2026-09-11  4:57 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-11  4:56 Ritesh Harjani (IBM) [this message]
2026-09-11  4:56 ` [RFC 1/3] KVM: PPC: Book3S HV: Read EX_DSISR as a 32-bit field on guest exit Ritesh Harjani (IBM)
2026-09-11  4:56 ` [RFC 2/3] KVM: PPC: Book3S: Don't call __ffs() on an empty pending_exceptions bitmap Ritesh Harjani (IBM)
2026-09-11  5:09   ` sashiko-bot
2026-09-11  4:56 ` [RFC 3/3] KVM: PPC: Book3S HV nestedv2: cap max vcpus to PAPR limit Ritesh Harjani (IBM)
2026-09-11  5:11   ` sashiko-bot

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