Re: [PATCH v4 3/3] x86/acpi: take rsdp address for boot params if available

On 09/10/2018 15:22, Boris Ostrovsky wrote:

On 10/9/18 6:54 AM, Juergen Gross wrote:

quoted

+
+u64 x86_default_get_root_pointer(void)
+{
+	return boot_params.hdr.acpi_rsdp_addr;
+}

Should we then update init_pvh_bootparams() with

    pvh_bootparams.hdr.acpi_rsdp_addr = pvh_start_info.rsdp_paddr;

(and drop x86_init.acpi.get_root_pointer = pvh_get_root_pointer;) ?

I was planning to do this as a follow on patch.


Juergen

-boris

quoted

diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index 2792b5573818..50a2b492fdd6 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c

@@ -31,7 +31,6 @@ static int __init iommu_init_noop(void) { return 0; }
 static void iommu_shutdown_noop(void) { }
 static bool __init bool_x86_init_noop(void) { return false; }
 static void x86_op_int_noop(int cpu) { }
-static u64 u64_x86_init_noop(void) { return 0; }
 
 /*
  * The platform setup functions are preset with the default functions

@@ -96,7 +95,7 @@ struct x86_init_ops x86_init __initdata = {
 	},
 
 	.acpi = {
-		.get_root_pointer	= u64_x86_init_noop,
+		.get_root_pointer	= x86_default_get_root_pointer,
 		.reduced_hw_early_init	= acpi_generic_reduced_hw_init,
 	},
 };