[xen staging] x86/boot: Collect the Raw CPU Policy earlier on boot

[patchbot@xxxxxxx]

commit a09022a09e1a79b3f9574993993bfad803b32596
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu May 23 00:55:34 2024 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Wed Jun 19 13:00:06 2024 +0100

    x86/boot: Collect the Raw CPU Policy earlier on boot
    
    This is a tangle, but it's a small step in the right direction.
    
    In the following change, xstate_init() is going to start using the Raw 
policy.
    
    calculate_raw_cpu_policy() is sufficiently separate from the other policies 
to
    safely move like this.
    
    No functional change.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
---
 xen/arch/x86/cpu-policy.c | 1 -
 xen/arch/x86/setup.c      | 4 +++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/xen/arch/x86/cpu-policy.c b/xen/arch/x86/cpu-policy.c
index b96f4ee55c..5b66f002df 100644
--- a/xen/arch/x86/cpu-policy.c
+++ b/xen/arch/x86/cpu-policy.c
@@ -845,7 +845,6 @@ static void __init calculate_hvm_def_policy(void)
 
 void __init init_guest_cpu_policies(void)
 {
-    calculate_raw_cpu_policy();
     calculate_host_policy();
 
     if ( IS_ENABLED(CONFIG_PV) )
diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index dd51e68dbe..eee20bb175 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -1888,7 +1888,9 @@ void asmlinkage __init noreturn __start_xen(unsigned long 
mbi_p)
 
     tsx_init(); /* Needs microcode.  May change HLE/RTM feature bits. */
 
-    identify_cpu(&boot_cpu_data);
+    calculate_raw_cpu_policy(); /* Needs microcode.  No other dependenices. */
+
+    identify_cpu(&boot_cpu_data); /* Needs microcode and raw policy. */
 
     set_in_cr4(X86_CR4_OSFXSR | X86_CR4_OSXMMEXCPT);
 
--
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