/*
 * ipv6 in net namespaces
 */

#include <net/inet_frag.h>

#ifndef __NETNS_IPV6_H__
#define __NETNS_IPV6_H__
#include <net/dst_ops.h>

struct ctl_table_header;

struct netns_sysctl_ipv6 {
#ifdef CONFIG_SYSCTL
	struct ctl_table_header *hdr;
	struct ctl_table_header *route_hdr;
	struct ctl_table_header *icmp_hdr;
	struct ctl_table_header *frags_hdr;
	struct ctl_table_header *xfrm6_hdr;
#endif
	int bindv6only;
	int flush_delay;
	int ip6_rt_max_size;
	int ip6_rt_gc_min_interval;
	int ip6_rt_gc_timeout;
	int ip6_rt_gc_interval;
	int ip6_rt_gc_elasticity;
	int ip6_rt_mtu_expires;
	int ip6_rt_min_advmss;
	int flowlabel_consistency;
	int auto_flowlabels;
	int icmpv6_time;
	int anycast_src_echo_reply;
	int ip_nonlocal_bind;
	int fwmark_reflect;
	int idgen_retries;
	int idgen_delay;
	int flowlabel_state_ranges;
};

struct netns_ipv6 {
	struct netns_sysctl_ipv6 sysctl;
	struct ipv6_devconf	*devconf_all;
	struct ipv6_devconf	*devconf_dflt;
	struct inet_peer_base	*peers;
	struct netns_frags	frags;
#ifdef CONFIG_NETFILTER
	struct xt_table		*ip6table_filter;
	struct xt_table		*ip6table_mangle;
	struct xt_table		*ip6table_raw;
#ifdef CONFIG_SECURITY
	struct xt_table		*ip6table_security;
#endif
	struct xt_table		*ip6table_nat;
#endif
	struct rt6_info         *ip6_null_entry;
	struct rt6_statistics   *rt6_stats;
	struct timer_list       ip6_fib_timer;
	struct hlist_head       *fib_table_hash;
	struct fib6_table       *fib6_main_tbl;
	struct list_head	fib6_walkers;
	struct dst_ops		ip6_dst_ops;
	rwlock_t		fib6_walker_lock;
	spinlock_t		fib6_gc_lock;
	unsigned int		 ip6_rt_gc_expire;
	unsigned long		 ip6_rt_last_gc;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
	struct rt6_info         *ip6_prohibit_entry;
	struct rt6_info         *ip6_blk_hole_entry;
	struct fib6_table       *fib6_local_tbl;
	struct fib_rules_ops    *fib6_rules_ops;
#endif
	struct sock		**icmp_sk;
	struct sock             *ndisc_sk;
	struct sock             *tcp_sk;
	struct sock             *igmp_sk;
	struct sock		*mc_autojoin_sk;
#ifdef CONFIG_IPV6_MROUTE
#ifndef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
	struct mr6_table	*mrt6;
#else
	struct list_head	mr6_tables;
	struct fib_rules_ops	*mr6_rules_ops;
#endif
#endif
	atomic_t		dev_addr_genid;
	atomic_t		fib6_sernum;
	struct seg6_pernet_data *seg6_data;
};

#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
struct netns_nf_frag {
	struct netns_sysctl_ipv6 sysctl;
	struct netns_frags	frags;
};
#endif

#endif
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<tr><th>author</th><td>Jiri Kosina &lt;jkosina@suse.cz&gt;</td><td class='right'>2017-01-27 22:25:52 +0000</td></tr>
<tr><th>committer</th><td>Ingo Molnar &lt;mingo@kernel.org&gt;</td><td class='right'>2017-01-28 09:18:56 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/Makefile.perf?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>bf29bddf0417a4783da3b24e8c9e017ac649326f</a> (<a href='/cgit.cgi/linux/net-next.git/patch/tools/perf/Makefile.perf?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>54a05a4883b73f80e4e1d8c4b15750aa01c39932</a> /<a href='/cgit.cgi/linux/net-next.git/tree/tools/perf/Makefile.perf?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>tools/perf/Makefile.perf</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/Makefile.perf?id=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>883af14e67e8b8702b5560aa64c888c0cd0bd66c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/Makefile.perf?id=bf29bddf0417a4783da3b24e8c9e017ac649326f&amp;id2=883af14e67e8b8702b5560aa64c888c0cd0bd66c'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/efi: Always map the first physical page into the EFI pagetables</div><div class='commit-msg'>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 &lt;hanka@ucw.cz&gt;
Signed-off-by: Jiri Kosina &lt;jkosina@suse.cz&gt;
Signed-off-by: Matt Fleming &lt;matt@codeblueprint.co.uk&gt;
Cc: Ard Biesheuvel &lt;ard.biesheuvel@linaro.org&gt;
Cc: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Borislav Petkov &lt;bp@suse.de&gt;
Cc: Laura Abbott &lt;labbott@redhat.com&gt;
Cc: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
Cc: Peter Zijlstra &lt;peterz@infradead.org&gt;
Cc: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Cc: Vojtech Pavlik &lt;vojtech@ucw.cz&gt;
Cc: Waiman Long &lt;waiman.long@hpe.com&gt;
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 &lt;mingo@kernel.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=bf29bddf0417a4783da3b24e8c9e017ac649326f'>Diffstat</a> (limited to 'tools/perf/Makefile.perf')</div><table summary='diffstat' class='diffstat'>