#ifndef _NET_DN_FIB_H #define _NET_DN_FIB_H #include extern const struct nla_policy rtm_dn_policy[]; struct dn_fib_res { struct fib_rule *r; struct dn_fib_info *fi; unsigned char prefixlen; unsigned char nh_sel; unsigned char type; unsigned char scope; }; struct dn_fib_nh { struct net_device *nh_dev; unsigned int nh_flags; unsigned char nh_scope; int nh_weight; int nh_power; int nh_oif; __le16 nh_gw; }; struct dn_fib_info { struct dn_fib_info *fib_next; struct dn_fib_info *fib_prev; int fib_treeref; atomic_t fib_clntref; int fib_dead; unsigned int fib_flags; int fib_protocol; __le16 fib_prefsrc; __u32 fib_priority; __u32 fib_metrics[RTAX_MAX]; int fib_nhs; int fib_power; struct dn_fib_nh fib_nh[0]; #define dn_fib_dev fib_nh[0].nh_dev }; #define DN_FIB_RES_RESET(res) ((res).nh_sel = 0) #define DN_FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) #define DN_FIB_RES_PREFSRC(res) ((res).fi->fib_prefsrc ? : __dn_fib_res_prefsrc(&res)) #define DN_FIB_RES_GW(res) (DN_FIB_RES_NH(res).nh_gw) #define DN_FIB_RES_DEV(res) (DN_FIB_RES_NH(res).nh_dev) #define DN_FIB_RES_OIF(res) (DN_FIB_RES_NH(res).nh_oif) typedef struct { __le16 datum; } dn_fib_key_t; typedef struct { __le16 datum; } dn_fib_hash_t; typedef struct { __u16 datum; } dn_fib_idx_t; struct dn_fib_node { struct dn_fib_node *fn_next; struct dn_fib_info *fn_info; #define DN_FIB_INFO(f) ((f)->fn_info) dn_fib_key_t fn_key; u8 fn_type; u8 fn_scope; u8 fn_state; }; struct dn_fib_table { struct hlist_node hlist; u32 n; int (*insert)(struct dn_fib_table *t, struct rtmsg *r, struct nlattr *attrs[], struct nlmsghdr *n, struct netlink_skb_parms *req); int (*delete)(struct dn_fib_table *t, struct rtmsg *r, struct nlattr *attrs[], struct nlmsghdr *n, struct netlink_skb_parms *req); int (*lookup)(struct dn_fib_table *t, const struct flowidn *fld, struct dn_fib_res *res); int (*flush)(struct dn_fib_table *t); int (*dump)(struct dn_fib_table *t, struct sk_buff *skb, struct netlink_callback *cb); unsigned char data[0]; }; #ifdef CONFIG_DECNET_ROUTER /* * dn_fib.c */ void dn_fib_init(void); void dn_fib_cleanup(void); int dn_fib_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); struct dn_fib_info *dn_fib_create_info(const struct rtmsg *r, struct nlattr *attrs[], const struct nlmsghdr *nlh, int *errp); int dn_fib_semantic_match(int type, struct dn_fib_info *fi, const struct flowidn *fld, struct dn_fib_res *res); void dn_fib_release_info(struct dn_fib_info *fi); void dn_fib_flush(void); void dn_fib_select_multipath(const struct flowidn *fld, struct dn_fib_res *res); /* * dn_tables.c */ struct dn_fib_table *dn_fib_get_table(u32 n, int creat); struct dn_fib_table *dn_fib_empty_table(void); void dn_fib_table_init(void); void dn_fib_table_cleanup(void); /* * dn_rules.c */ void dn_fib_rules_init(void); void dn_fib_rules_cleanup(void); unsigned int dnet_addr_type(__le16 addr); int dn_fib_lookup(struct flowidn *fld, struct dn_fib_res *res); int dn_fib_dump(struct sk_buff *skb, struct netlink_callback *cb); void dn_fib_free_info(struct dn_fib_info *fi); static inline void dn_fib_info_put(struct dn_fib_info *fi) { if (atomic_dec_and_test(&fi->fib_clntref)) dn_fib_free_info(fi); } static inline void dn_fib_res_put(struct dn_fib_res *res) { if (res->fi) dn_fib_info_put(res->fi); if (res->r) fib_rule_put(res->r); } #else /* Endnode */ #define dn_fib_init() do { } while(0) #define dn_fib_cleanup() do { } while(0) #define dn_fib_lookup(fl, res) (-ESRCH) #define dn_fib_info_put(fi) do { } while(0) #define dn_fib_select_multipath(fl, res) do { } while(0) #define dn_fib_rules_policy(saddr,res,flags) (0) #define dn_fib_res_put(res) do { } while(0) #endif /* CONFIG_DECNET_ROUTER */ static inline __le16 dnet_make_mask(int n) { if (n) return cpu_to_le16(~((1 << (16 - n)) - 1)); return cpu_to_le16(0); } #endif /* _NET_DN_FIB_H */ /net-next.git/log/tools/perf/pmu-events/arch/x86/haswell/floating-point.json?id=44091d29f2075972aede47ef17e1e70db3d51190&showmsg=1'>Expand)AuthorFilesLines '25'>25space:mode:
authorJiri Kosina <jkosina@suse.cz>2017-01-27 22:25:52 +0000
committerIngo Molnar <mingo@kernel.org>2017-01-28 09:18:56 +0100
commitbf29bddf0417a4783da3b24e8c9e017ac649326f (patch)
tree54a05a4883b73f80e4e1d8c4b15750aa01c39932 /tools/perf/arch/x86/util/group.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 'tools/perf/arch/x86/util/group.c')