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From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 1/4] KVM: PPC: BookS PR-KVM and BookE do not support context tracking
Date: Fri,  7 Oct 2022 00:04:10 +1000	[thread overview]
Message-ID: <20221006140413.126443-2-npiggin@gmail.com> (raw)
In-Reply-To: <20221006140413.126443-1-npiggin@gmail.com>

The context tracking code in PR-KVM and BookE implementations is not
complete, and can cause host crashes if context tracking is enabled.

Make these implementations depend on !CONTEXT_TRACKING_USER.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/kvm/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 61cdd782d3c5..a9f57dad6d91 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -51,6 +51,7 @@ config KVM_BOOK3S_HV_POSSIBLE
 config KVM_BOOK3S_32
 	tristate "KVM support for PowerPC book3s_32 processors"
 	depends on PPC_BOOK3S_32 && !SMP && !PTE_64BIT
+	depends on !CONTEXT_TRACKING_USER
 	select KVM
 	select KVM_BOOK3S_32_HANDLER
 	select KVM_BOOK3S_PR_POSSIBLE
@@ -105,6 +106,7 @@ config KVM_BOOK3S_64_HV
 config KVM_BOOK3S_64_PR
 	tristate "KVM support without using hypervisor mode in host"
 	depends on KVM_BOOK3S_64
+	depends on !CONTEXT_TRACKING_USER
 	select KVM_BOOK3S_PR_POSSIBLE
 	help
 	  Support running guest kernels in virtual machines on processors
@@ -190,6 +192,7 @@ config KVM_EXIT_TIMING
 config KVM_E500V2
 	bool "KVM support for PowerPC E500v2 processors"
 	depends on PPC_E500 && !PPC_E500MC
+	depends on !CONTEXT_TRACKING_USER
 	select KVM
 	select KVM_MMIO
 	select MMU_NOTIFIER
@@ -205,6 +208,7 @@ config KVM_E500V2
 config KVM_E500MC
 	bool "KVM support for PowerPC E500MC/E5500/E6500 processors"
 	depends on PPC_E500MC
+	depends on !CONTEXT_TRACKING_USER
 	select KVM
 	select KVM_MMIO
 	select KVM_BOOKE_HV
-- 
2.37.2


  reply	other threads:[~2022-10-06 14:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-06 14:04 [PATCH 0/4] powerpc: misc interrupt and context tracking fixes Nicholas Piggin
2022-10-06 14:04 ` Nicholas Piggin [this message]
2022-10-06 14:04 ` [PATCH 2/4] powerpc/64s/interrupt: Perf NMI should not take normal exit path Nicholas Piggin
2022-10-06 14:04 ` [PATCH 3/4] powerpc/64e/interrupt: Prevent NMI PMI causing a dangerous warning Nicholas Piggin
2022-10-06 14:04 ` [PATCH 4/4] powerpc/64: Fix perf profiling asynchronous interrupt handlers Nicholas Piggin
2022-10-28 11:49 ` (subset) [PATCH 0/4] powerpc: misc interrupt and context tracking fixes Michael Ellerman

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