Commit-ID: ae7ef45e12354a1e2f6013b46df0c9f5bbb6ffbe Gitweb: http://git.kernel.org/tip/ae7ef45e12354a1e2f6013b46df0c9f5bbb6ffbe Author: Andy Lutomirski <l...@kernel.org> AuthorDate: Sat, 2 Apr 2016 07:01:35 -0700 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 13 Apr 2016 11:37:45 +0200
x86/traps: Enable all exception handler callbacks early Now that early_fixup_exception() has pt_regs, we can just call fixup_exception() from it. This will make fancy exception handlers work early. Tested-by: Boris Ostrovsky <boris.ostrov...@oracle.com> Signed-off-by: Andy Lutomirski <l...@kernel.org> Acked-by: Linus Torvalds <torva...@linux-foundation.org> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Arjan van de Ven <ar...@linux.intel.com> Cc: Borislav Petkov <b...@alien8.de> Cc: KVM list <k...@vger.kernel.org> Cc: Paolo Bonzini <pbonz...@redhat.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: xen-devel <Xen-devel@lists.xen.org> Link: http://lkml.kernel.org/r/20fc047d926150cb08cb9b9f2923519b07ec1a15.1459605520.git.l...@kernel.org Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/mm/extable.c | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c index da442f3..061a237 100644 --- a/arch/x86/mm/extable.c +++ b/arch/x86/mm/extable.c @@ -88,10 +88,6 @@ extern unsigned int early_recursion_flag; /* Restricted version used during very early boot */ void __init early_fixup_exception(struct pt_regs *regs, int trapnr) { - const struct exception_table_entry *e; - unsigned long new_ip; - ex_handler_t handler; - /* Ignore early NMIs. */ if (trapnr == X86_TRAP_NMI) return; @@ -102,19 +98,8 @@ void __init early_fixup_exception(struct pt_regs *regs, int trapnr) if (regs->cs != __KERNEL_CS) goto fail; - e = search_exception_tables(regs->ip); - if (!e) - goto fail; - - new_ip = ex_fixup_addr(e); - handler = ex_fixup_handler(e); - - /* special handling not supported during early boot */ - if (handler != ex_handler_default) - goto fail; - - regs->ip = new_ip; - return; + if (fixup_exception(regs, trapnr)) + return; fail: early_printk("PANIC: early exception 0x%02x IP %lx:%lx error %lx cr2 0x%lx\n", _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel