[PATCH] drm/xe/tests: avoid build warning on 32-bit targets

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

Building the test case on 32-bit targets produces an integer overflow warning,
as a constant value is assigned to a 32-bit resource_size_t variable:

In file included from drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c:3329:
drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c: In function 'pf_gt_config_test_init':
drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c:14:25: error: conversion from 'long long unsigned int' to 'resource_size_t' {aka 'unsigned int'} changes value from '14940110848' to '2055208960' [-Werror=overflow]
   14 | #define TEST_VRAM       0x37a800000ull
      |                         ^~~~~~~~~~~~~~
drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c:71:29: note: in expansion of macro 'TEST_VRAM'
   71 |         vram->usable_size = TEST_VRAM;
      |                             ^~~~~~~~~

Shut up the warning with an extra cast that marks this truncation as intentional.
This is probably not the right fix here, but I could not figure out where the
constant value actually comes from, or if a smaller number would be appropriate
on a 32-bit system. It's possible that the test case or the driver is just not
useful on 32-bit machines because of other parts of the logic here.

Fixes: cbe29da6f7c0 ("drm/xe/tests: Add KUnit tests for new VRAM fair provisioning")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
If there is a better way to fix this, please treat this as a bug report and
just add a Reported-by tag in the commit.
---
 drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c b/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c
index 305dbd4e5d1a..86cd15834bac 100644
--- a/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c
+++ b/drivers/gpu/drm/xe/tests/xe_gt_sriov_pf_config_kunit.c
@@ -11,7 +11,7 @@
 #include "xe_pci_test.h"
 
 #define TEST_MAX_VFS	63
-#define TEST_VRAM	0x37a800000ull
+#define TEST_VRAM	(resource_size_t)0x37a800000ull
 
 static void pf_set_admin_mode(struct xe_device *xe, bool enable)
 {
-- 
2.39.5