CI complains that the exhaustive test of trying every size up to the
limit is too slow, so add a simple test that tries to submit one
extreme batch buffer and check all the relocations land.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105555
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
 tests/i915/gem_exec_big.c    | 70 ++++++++++++++++++++++++++++++------
 tests/intel-ci/blacklist.txt |  1 +
 2 files changed, 60 insertions(+), 11 deletions(-)

diff --git a/tests/i915/gem_exec_big.c b/tests/i915/gem_exec_big.c
index a15672f66..015f59e29 100644
--- a/tests/i915/gem_exec_big.c
+++ b/tests/i915/gem_exec_big.c
@@ -71,7 +71,7 @@ static void exec1(int fd, uint32_t handle, uint64_t 
reloc_ofs, unsigned flags, c
        gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
        gem_exec[0].alignment = 0;
        gem_exec[0].offset = 0;
-       gem_exec[0].flags = 0;
+       gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
        gem_exec[0].rsvd1 = 0;
        gem_exec[0].rsvd2 = 0;
 
@@ -154,12 +154,11 @@ static void execN(int fd, uint32_t handle, uint64_t 
batch_size, unsigned flags,
        gem_exec[0].handle = handle;
        gem_exec[0].relocation_count = nreloc;
        gem_exec[0].relocs_ptr = to_user_pointer(gem_reloc);
+       gem_exec[0].flags = EXEC_OBJECT_SUPPORTS_48B_ADDRESS;
 
        memset(&execbuf, 0, sizeof(execbuf));
        execbuf.buffers_ptr = to_user_pointer(gem_exec);
        execbuf.buffer_count = 1;
-       execbuf.batch_start_offset = 0;
-       execbuf.batch_len = 8;
        execbuf.flags = flags;
 
        /* Avoid hitting slowpaths in the reloc processing which might yield a
@@ -197,16 +196,10 @@ static void execN(int fd, uint32_t handle, uint64_t 
batch_size, unsigned flags,
 #undef reloc_ofs
 }
 
-igt_simple_main
+static void exhaustive(int fd)
 {
        uint32_t batch[2] = {MI_BATCH_BUFFER_END};
        uint64_t batch_size, max, ggtt_max, reloc_ofs;
-       int fd;
-
-       fd = drm_open_driver(DRIVER_INTEL);
-       igt_require_gem(fd);
-
-       use_64bit_relocs = intel_gen(intel_get_drm_devid(fd)) >= 8;
 
        max = 3 * gem_aperture_size(fd) / 4;
        ggtt_max = 3 * gem_global_aperture_size(fd) / 4;
@@ -258,6 +251,61 @@ igt_simple_main
                else
                        batch_size *= 2;
        }
+}
+
+static void single(int i915)
+{
+       const uint32_t bbe = MI_BATCH_BUFFER_END;
+       uint64_t batch_size, limit;
+       uint32_t handle;
+       void *ptr;
+
+       batch_size = (intel_get_avail_ram_mb() - 128) << 20; /* CI slack */
+       limit = gem_aperture_size(i915) - (256 << 10); /* low pages reserved */
+       if (!gem_uses_full_ppgtt(i915))
+               limit = 3 * limit / 4;
+
+       batch_size = min(batch_size, limit);
+       batch_size = ALIGN(batch_size, 4096);
+       igt_info("Submitting a %'"PRId64"MiB batch, %saperture size 
%'"PRId64"MiB\n",
+                batch_size >> 20,
+                gem_uses_full_ppgtt(i915) ? "" : "shared ",
+                gem_aperture_size(i915) >> 20);
+       intel_require_memory(1, batch_size, CHECK_RAM);
+
+       handle = gem_create(i915, batch_size);
+       gem_write(i915, handle, 0, &bbe, sizeof(bbe));
+
+       if (!FORCE_PREAD_PWRITE && gem_has_llc(i915))
+               ptr = __gem_mmap__cpu(i915, handle, 0, batch_size, PROT_READ);
+       else if (!FORCE_PREAD_PWRITE && gem_mmap__has_wc(i915))
+               ptr = __gem_mmap__wc(i915, handle, 0, batch_size, PROT_READ);
+       else
+               ptr = NULL;
+
+       execN(i915, handle, batch_size, 0, ptr);
+
+       if (ptr)
+               munmap(ptr, batch_size);
+}
+
+igt_main
+{
+       int i915 = -1;
+
+       igt_fixture {
+               i915 = drm_open_driver(DRIVER_INTEL);
+               igt_require_gem(i915);
+
+               use_64bit_relocs = intel_gen(intel_get_drm_devid(i915)) >= 8;
+       }
+
+       igt_subtest("single")
+               single(i915);
+
+       igt_subtest("exhaustive")
+               exhaustive(i915);
 
-       close(fd);
+       igt_fixture
+               close(i915);
 }
diff --git a/tests/intel-ci/blacklist.txt b/tests/intel-ci/blacklist.txt
index a2101ae71..ae61efe3f 100644
--- a/tests/intel-ci/blacklist.txt
+++ b/tests/intel-ci/blacklist.txt
@@ -28,6 +28,7 @@ igt@gem_ctx_thrash(@.*)?
 igt@gem_evict_alignment(@.*)?
 igt@gem_evict_everything(@.*)?
 igt@gem_exec_alignment@(?!.*single).*
+igt@gem_exec_big@(?!.*single).*
 igt@gem_exec_capture@many-(?!4K-).*
 igt@gem_exec_fence@(?!.*basic).*
 igt@gem_exec_flush@(?!.*basic).*
-- 
2.20.1

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