[Mesa-dev] [PATCH] Use 1 rather than 0 as the fallback cache line size.

[Richard Sandiford]

Without this, llvmpipe ends up giving a zero size to all uncompressed textures
on non-x86 systems, since align() cannot handle a 0 alignment.  Making the
default 1 seemed preferable to adding checks for 0.

Signed-off-by: Richard Sandiford <rsandifo at linux.vnet.ibm.com>
---
 src/gallium/auxiliary/util/u_cpu_detect.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c
index 7e6df9d..52d21a5 100644
--- a/src/gallium/auxiliary/util/u_cpu_detect.c
+++ b/src/gallium/auxiliary/util/u_cpu_detect.c
@@ -250,6 +250,11 @@ util_cpu_detect(void)
    util_cpu_caps.nr_cpus = 1;
 #endif
 
+   /* Make the fallback cacheline size 1 rather than 0 so that it can be
+    * safely passed to align().
+    */
+   util_cpu_caps.cacheline = 1;
+
 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
    if (has_cpuid()) {
       uint32_t regs[4];
-- 
1.7.11.7