From: Nicholas Piggin <npiggin@gmail.com> To: kvm-ppc@vger.kernel.org Cc: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com> Subject: [PATCH v1 05/12] KVM: PPC: Book3S HV: Prevent radix guests setting LPCR[TC] Date: Mon, 12 Apr 2021 11:48:38 +1000 [thread overview] Message-ID: <20210412014845.1517916-6-npiggin@gmail.com> (raw) In-Reply-To: <20210412014845.1517916-1-npiggin@gmail.com> Prevent radix guests setting LPCR[TC]. This bit only applies to hash partitions. Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/kvm/book3s_hv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 3de8a1f89a7d..70c6e9c27eb7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1645,6 +1645,10 @@ static int kvm_arch_vcpu_ioctl_set_sregs_hv(struct kvm_vcpu *vcpu, */ unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm, unsigned long lpcr) { + /* LPCR_TC only applies to HPT guests */ + if (kvm_is_radix(kvm)) + lpcr &= ~LPCR_TC; + /* On POWER8 and above, userspace can modify AIL */ if (!cpu_has_feature(CPU_FTR_ARCH_207S)) lpcr &= ~LPCR_AIL; -- 2.23.0
WARNING: multiple messages have this Message-ID (diff)
From: Nicholas Piggin <npiggin@gmail.com> To: kvm-ppc@vger.kernel.org Cc: Alexey Kardashevskiy <aik@ozlabs.ru>, linuxppc-dev@lists.ozlabs.org, Nicholas Piggin <npiggin@gmail.com> Subject: [PATCH v1 05/12] KVM: PPC: Book3S HV: Prevent radix guests setting LPCR[TC] Date: Mon, 12 Apr 2021 01:48:38 +0000 [thread overview] Message-ID: <20210412014845.1517916-6-npiggin@gmail.com> (raw) In-Reply-To: <20210412014845.1517916-1-npiggin@gmail.com> Prevent radix guests setting LPCR[TC]. This bit only applies to hash partitions. Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/kvm/book3s_hv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 3de8a1f89a7d..70c6e9c27eb7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1645,6 +1645,10 @@ static int kvm_arch_vcpu_ioctl_set_sregs_hv(struct kvm_vcpu *vcpu, */ unsigned long kvmppc_filter_lpcr_hv(struct kvm *kvm, unsigned long lpcr) { + /* LPCR_TC only applies to HPT guests */ + if (kvm_is_radix(kvm)) + lpcr &= ~LPCR_TC; + /* On POWER8 and above, userspace can modify AIL */ if (!cpu_has_feature(CPU_FTR_ARCH_207S)) lpcr &= ~LPCR_AIL; -- 2.23.0
next prev parent reply other threads:[~2021-04-12 1:51 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-12 1:48 [PATCH v1 00/12] minor KVM fixes and cleanups Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 01/12] KVM: PPC: Book3S HV P9: Restore host CTRL SPR after guest exit Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 14:06 ` Fabiano Rosas 2021-04-12 14:06 ` Fabiano Rosas 2021-04-13 1:25 ` Nicholas Piggin 2021-04-13 1:25 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 02/12] KVM: PPC: Book3S HV: Nested move LPCR sanitising to sanitise_hv_regs Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 03/12] KVM: PPC: Book3S HV: Add a function to filter guest LPCR bits Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 04/12] KVM: PPC: Book3S HV: Disallow LPCR[AIL] to be set to 1 or 2 Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin [this message] 2021-04-12 1:48 ` [PATCH v1 05/12] KVM: PPC: Book3S HV: Prevent radix guests setting LPCR[TC] Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 06/12] KVM: PPC: Book3S HV: Remove redundant mtspr PSPB Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 07/12] KVM: PPC: Book3S HV: remove unused kvmppc_h_protect argument Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 08/12] KVM: PPC: Book3S HV: Fix CONFIG_SPAPR_TCE_IOMMU=n default hcalls Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 09/12] powerpc/64s: Remove KVM handler support from CBE_RAS interrupts Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 10/12] powerpc/64s: remove KVM SKIP test from instruction breakpoint handler Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 11/12] KVM: PPC: Book3S HV: Ensure MSR[ME] is always set in guest MSR Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-12 1:48 ` [PATCH v1 12/12] KVM: PPC: Book3S HV: Ensure MSR[HV] is always clear " Nicholas Piggin 2021-04-12 1:48 ` Nicholas Piggin 2021-04-16 18:34 ` Fabiano Rosas 2021-04-16 18:34 ` Fabiano Rosas 2021-04-19 3:59 ` [PATCH v1 00/12] minor KVM fixes and cleanups Michael Ellerman 2021-04-19 3:59 ` Michael Ellerman
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20210412014845.1517916-6-npiggin@gmail.com \ --to=npiggin@gmail.com \ --cc=aik@ozlabs.ru \ --cc=kvm-ppc@vger.kernel.org \ --cc=linuxppc-dev@lists.ozlabs.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.