diff options
| author |   Michael Mair-Keimberger <mmk@levelnine.at> | 2021-07-25 11:34:08 +0200 |
|---|---|---|
| committer |   Michał Górny <mgorny@gentoo.org> | 2021-07-25 11:37:12 +0200 |
| commit | f5c144594c0c562a6429bbf3fe08f9b70146e1a5 (patch) | |
| tree | 52bad8ceaa097780f93d380a2b9236ea24af9ac7 /sys-kernel | |
| parent | package.mask: Last rite dev-python/xdg (diff) | |
| download | gentoo-f5c144594c0c562a6429bbf3fe08f9b70146e1a5.tar.gz gentoo-f5c144594c0c562a6429bbf3fe08f9b70146e1a5.tar.bz2 gentoo-f5c144594c0c562a6429bbf3fe08f9b70146e1a5.zip | |
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@levelnine.at>
Closes: https://github.com/gentoo/gentoo/pull/21782
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Diffstat (limited to 'sys-kernel')
| -rw-r--r-- | sys-kernel/gentoo-kernel/files/5.10.47-ppc64-kvm.patch | 56 |
1 files changed, 0 insertions, 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 59a7c7e75814..000000000000 --- 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 <farosas@linux.ibm.com> -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 <farosas@linux.ibm.com> -Signed-off-by: Paul Mackerras <paulus@ozlabs.org> ---- - 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 |