From: Tiwei Bie <tiwei.btw@antgroup.com>
Date: Mon, 16 Sep 2024 04:59:50 +0000 (+0800)
Subject: um: Fix the definition for physmem_size
X-Git-Tag: v6.13-rc1~18^2~59
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=242fef3610e3a38c53781d4d81d8e779021c0af5;p=thirdparty%2Fkernel%2Flinux.git

um: Fix the definition for physmem_size

Currently physmem_size is defined as long long but declared locally
as unsigned long long before using it in separate .c files. Make them
match by defining physmem_size as unsigned long long and also move
the declaration to a common header to allow the compiler to check it.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20240916045950.508910-5-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index e7f5556e3c96c..4d3e9b9f5b614 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -72,8 +72,6 @@ struct virtio_uml_vq_info {
 	bool suspended;
 };
 
-extern unsigned long long physmem_size;
-
 #define vu_err(vu_dev, ...)	dev_err(&(vu_dev)->pdev->dev, ##__VA_ARGS__)
 
 /* Vhost-user protocol */
diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index 61965a06c18af..283226c34ca47 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -36,6 +36,8 @@ struct cpu_task {
 
 extern struct cpu_task cpu_tasks[];
 
+extern unsigned long long physmem_size;
+
 extern unsigned long high_physmem;
 extern unsigned long uml_physmem;
 extern unsigned long uml_reserved;
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 94aca17993fdf..636830fe00f25 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -22,8 +22,6 @@ static int physmem_fd = -1;
 unsigned long high_physmem;
 EXPORT_SYMBOL(high_physmem);
 
-extern unsigned long long physmem_size;
-
 void __init mem_total_pages(unsigned long physmem, unsigned long iomem)
 {
 	unsigned long phys_pages, iomem_pages, total_pages;
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 8f86aa468b506..99cdf4b2d6482 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -131,7 +131,7 @@ static int have_root __initdata;
 static int have_console __initdata;
 
 /* Set in uml_mem_setup and modified in linux_main */
-long long physmem_size = 64 * 1024 * 1024;
+unsigned long long physmem_size = 64 * 1024 * 1024;
 EXPORT_SYMBOL(physmem_size);
 
 static const char *usage_string =