| Message ID | 20240226124736.1272949-2-arnd@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3,v2] drm/xe/kunit: fix link failure with built-in xe | expand |
On Mon, Feb 26, 2024 at 01:46:37PM +0100, Arnd Bergmann wrote: >From: Arnd Bergmann <arnd@arndb.de> > >clang complains about a nonsensical test on builds with a 32-bit phys_addr_t, >which means resizing will always fail: > >drivers/gpu/drm/xe/xe_mmio.c:109:23: error: result of comparison of constant 4294967296 with expression of type 'resource_size_t' (aka 'unsigned int') is always false [-Werror,-Wtautological-constant-out-of-range-compare] > 109 | root_res->start > 0x100000000ull) > | ~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ > >Previously, BAR resize was always disallowed on 32-bit kernels, but >this apparently changed recently. Since 32-bit machines can in theory >support PAE/LPAE for large address spaces, this may end up useful, >so change the driver to shut up the warning but still work when >phys_addr_t/resource_size_t is 64 bit wide. > >Fixes: 9a6e6c14bfde ("drm/xe/mmio: Use non-atomic writeq/readq variant for 32b") >Fixes: 237412e45390 ("drm/xe: Enable 32bits build") >Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Lucas De Marchi >--- >v2: use correct Fixes tag >--- > drivers/gpu/drm/xe/xe_mmio.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > >diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c >index e3db3a178760..7ba2477452d7 100644 >--- a/drivers/gpu/drm/xe/xe_mmio.c >+++ b/drivers/gpu/drm/xe/xe_mmio.c >@@ -106,7 +106,7 @@ static void xe_resize_vram_bar(struct xe_device *xe) > > pci_bus_for_each_resource(root, root_res, i) { > if (root_res && root_res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) && >- root_res->start > 0x100000000ull) >+ (u64)root_res->start > 0x100000000ul) > break; > } > >-- >2.39.2 >
diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c index e3db3a178760..7ba2477452d7 100644 --- a/drivers/gpu/drm/xe/xe_mmio.c +++ b/drivers/gpu/drm/xe/xe_mmio.c @@ -106,7 +106,7 @@ static void xe_resize_vram_bar(struct xe_device *xe) pci_bus_for_each_resource(root, root_res, i) { if (root_res && root_res->flags & (IORESOURCE_MEM | IORESOURCE_MEM_64) && - root_res->start > 0x100000000ull) + (u64)root_res->start > 0x100000000ul) break; }