From bc37ab56790fdd57da36fd98aca2dacfb6453d3d Mon Sep 17 00:00:00 2001 From: Changbin Du Date: Tue, 30 Jan 2018 19:19:44 +0800 Subject: [PATCH] drm/i915/gvt: Add verbose gtt shadow logs This add a new macro gvt_vdbg_mm() to print more verbose logs for gtt shadowing. The added verbose logs are very useful for debugging. gvt_vdbg_mm() only comes into effect if VERBOSE_DEBUG is defined by the developer. Signed-off-by: Changbin Du Reviewed-by: Zhi Wang Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/gtt.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c index 82454fb..8ce82a2 100644 --- a/drivers/gpu/drm/i915/gvt/gtt.c +++ b/drivers/gpu/drm/i915/gvt/gtt.c @@ -38,6 +38,12 @@ #include "i915_pvinfo.h" #include "trace.h" +#if defined(VERBOSE_DEBUG) +#define gvt_vdbg_mm(fmt, args...) gvt_dbg_mm(fmt, ##args) +#else +#define gvt_vdbg_mm(fmt, args...) +#endif + static bool enable_out_of_sync = false; static int preallocated_oos_pages = 8192; @@ -582,6 +588,9 @@ static inline int ppgtt_spt_get_entry( return ret; ops->test_pse(e); + + gvt_vdbg_mm("read ppgtt entry, spt type %d, entry type %d, index %lu, value %llx\n", + type, e->type, index, e->val64); return 0; } @@ -597,6 +606,9 @@ static inline int ppgtt_spt_set_entry( if (WARN(!gtt_type_is_entry(e->type), "invalid entry type\n")) return -EINVAL; + gvt_vdbg_mm("set ppgtt entry, spt type %d, entry type %d, index %lu, value %llx\n", + type, e->type, index, e->val64); + return ops->set_entry(page_table, e, index, guest, spt->guest_page.track.gfn << I915_GTT_PAGE_SHIFT, spt->vgpu); @@ -1109,6 +1121,9 @@ static int ppgtt_handle_guest_entry_removal(struct intel_vgpu_guest_page *gpt, trace_gpt_change(spt->vgpu->id, "remove", spt, sp->type, se->val64, index); + gvt_vdbg_mm("destroy old shadow entry, type %d, index %lu, value %llx\n", + se->type, index, se->val64); + if (!ops->test_present(se)) return 0; @@ -1147,6 +1162,9 @@ static int ppgtt_handle_guest_entry_add(struct intel_vgpu_guest_page *gpt, trace_gpt_change(spt->vgpu->id, "add", spt, sp->type, we->val64, index); + gvt_vdbg_mm("add shadow entry: type %d, index %lu, value %llx\n", + we->type, index, we->val64); + if (gtt_type_is_pt(get_next_pt_type(we->type))) { s = ppgtt_populate_shadow_page_by_guest_entry(vgpu, we); if (IS_ERR(s)) { -- 2.7.4