/* AFS tracepoints * * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public Licence * as published by the Free Software Foundation; either version * 2 of the Licence, or (at your option) any later version. */ #undef TRACE_SYSTEM #define TRACE_SYSTEM afs #if !defined(_TRACE_AFS_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_AFS_H #include /* * Define enums for tracing information. */ #ifndef __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY #define __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY enum afs_call_trace { afs_call_trace_alloc, afs_call_trace_free, afs_call_trace_put, afs_call_trace_wake, afs_call_trace_work, }; #endif /* end __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY */ /* * Declare tracing information enums and their string mappings for display. */ #define afs_call_traces \ EM(afs_call_trace_alloc, "ALLOC") \ EM(afs_call_trace_free, "FREE ") \ EM(afs_call_trace_put, "PUT ") \ EM(afs_call_trace_wake, "WAKE ") \ E_(afs_call_trace_work, "WORK ") /* * Export enum symbols via userspace. */ #undef EM #undef E_ #define EM(a, b) TRACE_DEFINE_ENUM(a); #define E_(a, b) TRACE_DEFINE_ENUM(a); afs_call_traces; /* * Now redefine the EM() and E_() macros to map the enums to the strings that * will be printed in the output. */ #undef EM #undef E_ #define EM(a, b) { a, b }, #define E_(a, b) { a, b } TRACE_EVENT(afs_recv_data, TP_PROTO(struct afs_call *call, unsigned count, unsigned offset, bool want_more, int ret), TP_ARGS(call, count, offset, want_more, ret), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(enum afs_call_state, state ) __field(unsigned int, count ) __field(unsigned int, offset ) __field(unsigned short, unmarshall ) __field(bool, want_more ) __field(int, ret ) ), TP_fast_assign( __entry->rxcall = call->rxcall; __entry->call = call; __entry->state = call->state; __entry->unmarshall = call->unmarshall; __entry->count = count; __entry->offset = offset; __entry->want_more = want_more; __entry->ret = ret; ), TP_printk("c=%p ac=%p s=%u u=%u %u/%u wm=%u ret=%d", __entry->rxcall, __entry->call, __entry->state, __entry->unmarshall, __entry->offset, __entry->count, __entry->want_more, __entry->ret) ); TRACE_EVENT(afs_notify_call, TP_PROTO(struct rxrpc_call *rxcall, struct afs_call *call), TP_ARGS(rxcall, call), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(enum afs_call_state, state ) __field(unsigned short, unmarshall ) ), TP_fast_assign( __entry->rxcall = rxcall; __entry->call = call; __entry->state = call->state; __entry->unmarshall = call->unmarshall; ), TP_printk("c=%p ac=%p s=%u u=%u", __entry->rxcall, __entry->call, __entry->state, __entry->unmarshall) ); TRACE_EVENT(afs_cb_call, TP_PROTO(struct afs_call *call), TP_ARGS(call), TP_STRUCT__entry( __field(struct rxrpc_call *, rxcall ) __field(struct afs_call *, call ) __field(const char *, name ) __field(u32, op ) ), TP_fast_assign( __entry->rxcall = call->rxcall; __entry->call = call; __entry->name = call->type->name; __entry->op = call->operation_ID; ), TP_printk("c=%p ac=%p %s o=%u", __entry->rxcall, __entry->call, __entry->name, __entry->op) ); TRACE_EVENT(afs_call, TP_PROTO(struct afs_call *call, enum afs_call_trace op, int usage, int outstanding, const void *where), TP_ARGS(call, op, usage, outstanding, where), TP_STRUCT__entry( __field(struct afs_call *, call ) __field(int, op ) __field(int, usage ) __field(int, outstanding ) __field(const void *, where ) ), TP_fast_assign( __entry->call = call; __entry->op = op; __entry->usage = usage; __entry->outstanding = outstanding; __entry->where = where; ), TP_printk("c=%p %s u=%d o=%d sp=%pSR", __entry->call, __print_symbolic(__entry->op, afs_call_traces), __entry->usage, __entry->outstanding, __entry->where) ); #endif /* _TRACE_AFS_H */ /* This part must be outside protection */ #include 56 +0100 commitbf29bddf0417a4783da3b24e8c9e017ac649326f (patch) tree54a05a4883b73f80e4e1d8c4b15750aa01c39932 /net/ipv6/tcp_ipv6.c parent883af14e67e8b8702b5560aa64c888c0cd0bd66c (diff)
x86/efi: Always map the first physical page into the EFI pagetables
Commit: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode. It turns out though that there are 64-bit EFI implementations in the wild (this particular problem has been reported on a Lenovo Yoga 710-11IKB), which still make use of the first physical page for their own private use, even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory map. In case there is no mapping for this particular frame in the EFI pagetables, as soon as firmware tries to make use of it, a triple fault occurs and the system reboots (in case of the Yoga 710-11IKB this is very early during bootup). Fix that by always mapping the first page of physical memory into the EFI pagetables. We're free to hand this page to the BIOS, as trim_bios_range() will reserve the first page and isolate it away from memory allocators anyway. Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the regression on affected hardware, as this commit: ab72a27da ("x86/efi: Consolidate region mapping logic") later made the first physical frame not to be mapped anyway. Reported-by: Hanka Pavlikova <hanka@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Laura Abbott <labbott@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vojtech Pavlik <vojtech@ucw.cz> Cc: Waiman Long <waiman.long@hpe.com> Cc: linux-efi@vger.kernel.org Cc: stable@kernel.org # v4.8+ Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/ipv6/tcp_ipv6.c')