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/espintcp.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/net/espintcp.h (limited to 'include/net/espintcp.h') diff --git a/include/net/espintcp.h b/include/net/espintcp.h new file mode 100644 index 000000000..c70efd704 --- /dev/null +++ b/include/net/espintcp.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _NET_ESPINTCP_H +#define _NET_ESPINTCP_H + +#include +#include + +void __init espintcp_init(void); + +int espintcp_push_skb(struct sock *sk, struct sk_buff *skb); +int espintcp_queue_out(struct sock *sk, struct sk_buff *skb); +bool tcp_is_ulp_esp(struct sock *sk); + +struct espintcp_msg { + struct sk_buff *skb; + struct sk_msg skmsg; + int offset; + int len; +}; + +struct espintcp_ctx { + struct strparser strp; + struct sk_buff_head ike_queue; + struct sk_buff_head out_queue; + struct espintcp_msg partial; + void (*saved_data_ready)(struct sock *sk); + void (*saved_write_space)(struct sock *sk); + void (*saved_destruct)(struct sock *sk); + struct work_struct work; + bool tx_running; +}; + +static inline struct espintcp_ctx *espintcp_getctx(const struct sock *sk) +{ + const struct inet_connection_sock *icsk = inet_csk(sk); + + /* RCU is only needed for diag */ + return (__force void *)icsk->icsk_ulp_data; +} +#endif -- cgit v1.3.1