Commit bc37ab56 authored by Changbin Du's avatar Changbin Du Committed by Zhenyu Wang

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: default avatarChangbin Du <>
Reviewed-by: default avatarZhi Wang <>
Signed-off-by: Zhenyu Wang's avatarZhenyu Wang <>
parent b0c766bf
......@@ -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)
#define gvt_vdbg_mm(fmt, args...)
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;
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,
......@@ -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,
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)) {
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