From: James Hogan Date: Thu, 23 Jun 2016 16:34:40 +0000 (+0100) Subject: MIPS: KVM: Add dumping of generated entry code X-Git-Tag: v4.13~2555^2~58 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=d7b8f890b63f386ca28c820b8ddb7ff1f63cbe3c;p=mirror_ubuntu-bionic-kernel.git MIPS: KVM: Add dumping of generated entry code Dump the generated entry code with pr_debug(), similar to how it is done in tlbex.c, so it can be more easily debugged. Signed-off-by: James Hogan Cc: Paolo Bonzini Cc: Radim KrÄmář Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini --- diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index e3ae1229f147..9f36dcb3c580 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -245,6 +245,23 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, } } +static inline void dump_handler(const char *symbol, void *start, void *end) +{ + u32 *p; + + pr_debug("LEAF(%s)\n", symbol); + + pr_debug("\t.set push\n"); + pr_debug("\t.set noreorder\n"); + + for (p = start; p < (u32 *)end; ++p) + pr_debug("\t.word\t0x%08x\t\t# %p\n", *p, p); + + pr_debug("\t.set\tpop\n"); + + pr_debug("\tEND(%s)\n", symbol); +} + struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) { int err, size; @@ -309,6 +326,14 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) vcpu->arch.vcpu_run = p; p = kvm_mips_build_vcpu_run(p); + /* Dump the generated code */ + pr_debug("#include \n"); + pr_debug("#include \n"); + pr_debug("\n"); + dump_handler("kvm_vcpu_run", vcpu->arch.vcpu_run, p); + dump_handler("kvm_gen_exc", gebase + 0x180, gebase + 0x200); + dump_handler("kvm_exit", gebase + 0x2000, vcpu->arch.vcpu_run); + /* Invalidate the icache for these ranges */ local_flush_icache_range((unsigned long)gebase, (unsigned long)gebase + ALIGN(size, PAGE_SIZE));