commit: f5c144594c0c562a6429bbf3fe08f9b70146e1a5 Author: Michael Mair-Keimberger <mmk <AT> levelnine <DOT> at> AuthorDate: Sun Jul 25 09:34:08 2021 +0000 Commit: Michał Górny <mgorny <AT> gentoo <DOT> org> CommitDate: Sun Jul 25 09:37:12 2021 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f5c14459
sys-kernel/gentoo-kernel: remove unused patch(es) Package-Manager: Portage-3.0.20, Repoman-3.0.3 Signed-off-by: Michael Mair-Keimberger <mmk <AT> levelnine.at> Closes: https://github.com/gentoo/gentoo/pull/21782 Signed-off-by: Michał Górny <mgorny <AT> gentoo.org> .../gentoo-kernel/files/5.10.47-ppc64-kvm.patch | 56 ---------------------- 1 file changed, 56 deletions(-) diff --git a/sys-kernel/gentoo-kernel/files/5.10.47-ppc64-kvm.patch b/sys-kernel/gentoo-kernel/files/5.10.47-ppc64-kvm.patch deleted file mode 100644 index 59a7c7e7581..00000000000 --- a/sys-kernel/gentoo-kernel/files/5.10.47-ppc64-kvm.patch +++ /dev/null @@ -1,56 +0,0 @@ -From 25edcc50d76c834479d11fcc7de46f3da4d95121 Mon Sep 17 00:00:00 2001 -From: Fabiano Rosas <[email protected]> -Date: Thu, 4 Feb 2021 17:05:17 -0300 -Subject: [PATCH] KVM: PPC: Book3S HV: Save and restore FSCR in the P9 path - -The Facility Status and Control Register is a privileged SPR that -defines the availability of some features in problem state. Since it -can be written by the guest, we must restore it to the previous host -value after guest exit. - -This restoration is currently done by taking the value from -current->thread.fscr, which in the P9 path is not enough anymore -because the guest could context switch the QEMU thread, causing the -guest-current value to be saved into the thread struct. - -The above situation manifested when running a QEMU linked against a -libc with System Call Vectored support, which causes scv -instructions to be run by QEMU early during the guest boot (during -SLOF), at which point the FSCR is 0 due to guest entry. After a few -scv calls (1 to a couple hundred), the context switching happens and -the QEMU thread runs with the guest value, resulting in a Facility -Unavailable interrupt. - -This patch saves and restores the host value of FSCR in the inner -guest entry loop in a way independent of current->thread.fscr. The old -way of doing it is still kept in place because it works for the old -entry path. - -Signed-off-by: Fabiano Rosas <[email protected]> -Signed-off-by: Paul Mackerras <[email protected]> ---- - 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 89c686c17f0606..f6d470157fcb62 100644 ---- a/arch/powerpc/kvm/book3s_hv.c -+++ b/arch/powerpc/kvm/book3s_hv.c -@@ -3611,6 +3611,7 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, - unsigned long host_tidr = mfspr(SPRN_TIDR); - unsigned long host_iamr = mfspr(SPRN_IAMR); - unsigned long host_amr = mfspr(SPRN_AMR); -+ unsigned long host_fscr = mfspr(SPRN_FSCR); - s64 dec; - u64 tb; - int trap, save_pmu; -@@ -3751,6 +3752,9 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit, - if (host_amr != vcpu->arch.amr) - mtspr(SPRN_AMR, host_amr); - -+ if (host_fscr != vcpu->arch.fscr) -+ mtspr(SPRN_FSCR, host_fscr); -+ - msr_check_and_set(MSR_FP | MSR_VEC | MSR_VSX); - store_fp_state(&vcpu->arch.fp); - #ifdef CONFIG_ALTIVEC
