From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits. Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9") Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- include/net/rawv6.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 include/net/rawv6.h (limited to 'include/net/rawv6.h') diff --git a/include/net/rawv6.h b/include/net/rawv6.h new file mode 100644 index 000000000..82810cbe3 --- /dev/null +++ b/include/net/rawv6.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _NET_RAWV6_H +#define _NET_RAWV6_H + +#include +#include + +extern struct raw_hashinfo raw_v6_hashinfo; +bool raw_v6_match(struct net *net, const struct sock *sk, unsigned short num, + const struct in6_addr *loc_addr, + const struct in6_addr *rmt_addr, int dif, int sdif); + +int raw_abort(struct sock *sk, int err); + +void raw6_icmp_error(struct sk_buff *, int nexthdr, + u8 type, u8 code, int inner_offset, __be32); +bool raw6_local_deliver(struct sk_buff *, int); + +int rawv6_rcv(struct sock *sk, struct sk_buff *skb); + +#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE) +int rawv6_mh_filter_register(int (*filter)(struct sock *sock, + struct sk_buff *skb)); +int rawv6_mh_filter_unregister(int (*filter)(struct sock *sock, + struct sk_buff *skb)); +#endif + +#endif -- cgit v1.3.1