From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Fri, 27 Dec 2024 22:21:46 +0000 (+0000)
Subject: dbg
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=refs%2Fheads%2Fxen-fred;p=people%2Fandrewcoop%2Fxen.git

dbg
---

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index c275714e85..d16cdd9293 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1181,6 +1181,44 @@ void asmlinkage __init noreturn __start_xen(void)
     early_cpu_init(true);
     early_microcode_init(bi);
 
+    printk("*** FRED: %u, LKGS: %u, NMI_SRC %u, opt_fred %d\n",
+           boot_cpu_has(X86_FEATURE_FRED),
+           boot_cpu_has(X86_FEATURE_LKGS),
+           boot_cpu_has(X86_FEATURE_NMI_SRC),
+           opt_fred);
+
+    /* printk("*** cr4 %p\n", _p(read_cr4())); */
+
+    /* printk("int3\n"); */
+    /* asm volatile ("int3"); */
+
+    /* printk("rex64 int3\n"); */
+    /* asm volatile ("rex64 int3"); */
+
+    /* printk("int1\n"); */
+    /* asm volatile ("data16 addr32 int1"); */
+
+    /* printk("syscall\n"); */
+    /* asm volatile ("syscall"); */
+
+    /* printk("sysenter\n"); */
+    /* asm volatile ("sysenter"); */
+
+    /* printk("Good CET-IBT\n"); */
+    /* asm volatile ("lea 1f(%%rip), %%rax\n\t" */
+    /*               "jmp *%%rax\n\t" */
+    /*               "1: endbr64; cmc" */
+    /*               ::: "rax"); */
+
+    /* printk("Bad CET-IBT\n"); */
+    /* asm volatile ("lea 1f(%%rip), %%rax\n\t" */
+    /*               "jmp *%%rax\n\t" */
+    /*               "1: cmc" */
+    /*               ::: "rax"); */
+
+    /* panic("done\n"); */
+
+
     if ( pvh_boot )
         pvh_print_info();
 
diff --git a/xen/arch/x86/smpboot.c b/xen/arch/x86/smpboot.c
index b9bb76f7a5..659f996989 100644
--- a/xen/arch/x86/smpboot.c
+++ b/xen/arch/x86/smpboot.c
@@ -1046,6 +1046,8 @@ static int cpu_smpboot_alloc(unsigned int cpu)
     unsigned long stub_page;
     int rc = -ENOMEM;
 
+    printk("*** CPU %u, %s(%u)\n", smp_processor_id(), __func__, cpu);
+
     if ( node != NUMA_NO_NODE )
         memflags = MEMF_node(node);
 
@@ -1150,6 +1152,8 @@ static struct notifier_block cpu_smpboot_nfb = {
 
 void __init smp_prepare_cpus(void)
 {
+    printk("*** CPU %u, %s()\n", smp_processor_id(), __func__);
+
     register_cpu_notifier(&cpu_smpboot_nfb);
 
     mtrr_aps_sync_begin();