Quoting Chris Wilson (2018-09-26 23:12:22)
> Now that we are confident in providing full-ppgtt where supported,
> remove the ability to override the context isolation.
>
> v2: Remove faked aliasing-ppgtt for testing as it no longer is accepted.
> v3: s/USES/HAS/ to match usage and reject attempts to load the module on
> old GVT-g setups that do not provide support for full-ppgtt.
> v4: Insulate ABI ppGTT values from our internal enum (later plans
> involve moving ppGTT depth out of the enum, thus potentially breaking
> ABI unless we document the current values).
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> #v3
+ Jani for awareness when handling dinq, this solidifies existing uAPI
And drops the reporting of 48-bit ppGTT through this getparam as we
already have context specific I915_CONTEXT_PARAM_GTT_SIZE for that and
no known abusers for the unintended reporting outside 0,1,2 set.
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Regards, Joonas
> Acked-by: Zhi Wang <zhi.a.wang@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.c | 22 +++--
> drivers/gpu/drm/i915/i915_drv.h | 14 +--
> drivers/gpu/drm/i915/i915_gem_context.c | 2 +-
> drivers/gpu/drm/i915/i915_gem_gtt.c | 88 ++-----------------
> drivers/gpu/drm/i915/i915_gpu_error.c | 4 +-
> drivers/gpu/drm/i915/i915_params.c | 4 -
> drivers/gpu/drm/i915/i915_params.h | 1 -
> drivers/gpu/drm/i915/i915_pci.c | 17 ++--
> drivers/gpu/drm/i915/intel_device_info.c | 6 ++
> drivers/gpu/drm/i915/intel_device_info.h | 13 ++-
> drivers/gpu/drm/i915/intel_lrc.c | 13 ++-
> drivers/gpu/drm/i915/selftests/huge_pages.c | 12 +--
> .../gpu/drm/i915/selftests/i915_gem_context.c | 59 +------------
> .../gpu/drm/i915/selftests/i915_gem_evict.c | 2 +-
> drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 4 +-
> include/uapi/drm/i915_drm.h | 8 ++
> 16 files changed, 72 insertions(+), 197 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index ade9bca250fa..1b028f429e92 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -345,7 +345,7 @@ static int i915_getparam_ioctl(struct drm_device *dev, void *data,
> value = HAS_WT(dev_priv);
> break;
> case I915_PARAM_HAS_ALIASING_PPGTT:
> - value = USES_PPGTT(dev_priv);
> + value = min_t(int, INTEL_PPGTT(dev_priv), I915_GEM_PPGTT_FULL);
> break;
> case I915_PARAM_HAS_SEMAPHORES:
> value = HAS_LEGACY_SEMAPHORES(dev_priv);
> @@ -1049,17 +1049,6 @@ static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv)
>
> static void intel_sanitize_options(struct drm_i915_private *dev_priv)
> {
> - /*
> - * i915.enable_ppgtt is read-only, so do an early pass to validate the
> - * user's requested state against the hardware/driver capabilities. We
> - * do this now so that we can print out any log messages once rather
> - * than every time we check intel_enable_ppgtt().
> - */
> - i915_modparams.enable_ppgtt =
> - intel_sanitize_enable_ppgtt(dev_priv,
> - i915_modparams.enable_ppgtt);
> - DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915_modparams.enable_ppgtt);
> -
> intel_gvt_sanitize_options(dev_priv);
> }
>
> @@ -1374,6 +1363,15 @@ static int i915_driver_init_hw(struct drm_i915_private *dev_priv)
>
> intel_device_info_runtime_init(mkwrite_device_info(dev_priv));
>
> + if (HAS_PPGTT(dev_priv)) {
> + if (intel_vgpu_active(dev_priv) &&
> + !intel_vgpu_has_full_48bit_ppgtt(dev_priv)) {
> + i915_report_error(dev_priv,
> + "incompatible vGPU found, support for isolated ppGTT required\n");
> + return -ENXIO;
> + }
> + }
> +
> intel_sanitize_options(dev_priv);
>
> i915_perf_init(dev_priv);
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 8624b4bdc242..f28b3c2a3cd2 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2593,9 +2593,14 @@ intel_info(const struct drm_i915_private *dev_priv)
>
> #define HAS_EXECLISTS(dev_priv) HAS_LOGICAL_RING_CONTEXTS(dev_priv)
>
> -#define USES_PPGTT(dev_priv) (i915_modparams.enable_ppgtt)
> -#define USES_FULL_PPGTT(dev_priv) (i915_modparams.enable_ppgtt >= 2)
> -#define USES_FULL_48BIT_PPGTT(dev_priv) (i915_modparams.enable_ppgtt == 3)
> +#define INTEL_PPGTT(dev_priv) (INTEL_INFO(dev_priv)->ppgtt)
> +#define HAS_PPGTT(dev_priv) \
> + (INTEL_PPGTT(dev_priv) != INTEL_PPGTT_NONE)
> +#define HAS_FULL_PPGTT(dev_priv) \
> + (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL)
> +#define HAS_FULL_48BIT_PPGTT(dev_priv) \
> + (INTEL_PPGTT(dev_priv) >= INTEL_PPGTT_FULL_4LVL)
> +
> #define HAS_PAGE_SIZES(dev_priv, sizes) ({ \
> GEM_BUG_ON((sizes) == 0); \
> ((sizes) & ~(dev_priv)->info.page_sizes) == 0; \
> @@ -2743,9 +2748,6 @@ intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *dev_priv)
> return IS_BROXTON(dev_priv) && intel_vtd_active();
> }
>
> -int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
> - int enable_ppgtt);
> -
> /* i915_drv.c */
> void __printf(3, 4)
> __i915_printk(struct drm_i915_private *dev_priv, const char *level,
> diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
> index f772593b99ab..15c92f75b1b8 100644
> --- a/drivers/gpu/drm/i915/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/i915_gem_context.c
> @@ -414,7 +414,7 @@ i915_gem_create_context(struct drm_i915_private *dev_priv,
> if (IS_ERR(ctx))
> return ctx;
>
> - if (USES_FULL_PPGTT(dev_priv)) {
> + if (HAS_FULL_PPGTT(dev_priv)) {
> struct i915_hw_ppgtt *ppgtt;
>
> ppgtt = i915_ppgtt_create(dev_priv, file_priv);
> diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> index f6c7ab413081..c9363504949f 100644
> --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> @@ -133,55 +133,6 @@ static inline void i915_ggtt_invalidate(struct drm_i915_private *i915)
> i915->ggtt.invalidate(i915);
> }
>
> -int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
> - int enable_ppgtt)
> -{
> - bool has_full_ppgtt;
> - bool has_full_48bit_ppgtt;
> -
> - if (!dev_priv->info.has_aliasing_ppgtt)
> - return 0;
> -
> - has_full_ppgtt = dev_priv->info.has_full_ppgtt;
> - has_full_48bit_ppgtt = dev_priv->info.has_full_48bit_ppgtt;
> -
> - if (intel_vgpu_active(dev_priv)) {
> - /* GVT-g has no support for 32bit ppgtt */
> - has_full_ppgtt = false;
> - has_full_48bit_ppgtt = intel_vgpu_has_full_48bit_ppgtt(dev_priv);
> - }
> -
> - /*
> - * We don't allow disabling PPGTT for gen8+ as it's a requirement for
> - * execlists, the sole mechanism available to submit work.
> - */
> - if (enable_ppgtt == 0 && !HAS_EXECLISTS(dev_priv))
> - return 0;
> -
> - if (enable_ppgtt == 1)
> - return 1;
> -
> - if (enable_ppgtt == 2 && has_full_ppgtt)
> - return 2;
> -
> - if (enable_ppgtt == 3 && has_full_48bit_ppgtt)
> - return 3;
> -
> - /* Disable ppgtt on SNB if VT-d is on. */
> - if (IS_GEN6(dev_priv) && intel_vtd_active()) {
> - DRM_INFO("Disabling PPGTT because VT-d is on\n");
> - return 0;
> - }
> -
> - if (has_full_48bit_ppgtt)
> - return 3;
> -
> - if (has_full_ppgtt)
> - return 2;
> -
> - return 1;
> -}
> -
> static int ppgtt_bind_vma(struct i915_vma *vma,
> enum i915_cache_level cache_level,
> u32 unused)
> @@ -1647,7 +1598,7 @@ static struct i915_hw_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
> ppgtt->vm.i915 = i915;
> ppgtt->vm.dma = &i915->drm.pdev->dev;
>
> - ppgtt->vm.total = USES_FULL_48BIT_PPGTT(i915) ?
> + ppgtt->vm.total = HAS_FULL_48BIT_PPGTT(i915) ?
> 1ULL << 48 :
> 1ULL << 32;
>
> @@ -1782,19 +1733,6 @@ static inline void gen6_write_pde(const struct gen6_hw_ppgtt *ppgtt,
> ppgtt->pd_addr + pde);
> }
>
> -static void gen8_ppgtt_enable(struct drm_i915_private *dev_priv)
> -{
> - struct intel_engine_cs *engine;
> - enum intel_engine_id id;
> -
> - for_each_engine(engine, dev_priv, id) {
> - u32 four_level = USES_FULL_48BIT_PPGTT(dev_priv) ?
> - GEN8_GFX_PPGTT_48B : 0;
> - I915_WRITE(RING_MODE_GEN7(engine),
> - _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE | four_level));
> - }
> -}
> -
> static void gen7_ppgtt_enable(struct drm_i915_private *dev_priv)
> {
> struct intel_engine_cs *engine;
> @@ -1834,7 +1772,8 @@ static void gen6_ppgtt_enable(struct drm_i915_private *dev_priv)
> ecochk = I915_READ(GAM_ECOCHK);
> I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT | ECOCHK_PPGTT_CACHE64B);
>
> - I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
> + if (HAS_PPGTT(dev_priv)) /* may be disabled for VT-d */
> + I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
> }
>
> /* PPGTT support for Sandybdrige/Gen6 and later */
> @@ -2237,23 +2176,10 @@ int i915_ppgtt_init_hw(struct drm_i915_private *dev_priv)
> {
> gtt_write_workarounds(dev_priv);
>
> - /* In the case of execlists, PPGTT is enabled by the context descriptor
> - * and the PDPs are contained within the context itself. We don't
> - * need to do anything here. */
> - if (HAS_LOGICAL_RING_CONTEXTS(dev_priv))
> - return 0;
> -
> - if (!USES_PPGTT(dev_priv))
> - return 0;
> -
> if (IS_GEN6(dev_priv))
> gen6_ppgtt_enable(dev_priv);
> else if (IS_GEN7(dev_priv))
> gen7_ppgtt_enable(dev_priv);
> - else if (INTEL_GEN(dev_priv) >= 8)
> - gen8_ppgtt_enable(dev_priv);
> - else
> - MISSING_CASE(INTEL_GEN(dev_priv));
>
> return 0;
> }
> @@ -2952,7 +2878,7 @@ int i915_gem_init_ggtt(struct drm_i915_private *dev_priv)
> /* And finally clear the reserved guard page */
> ggtt->vm.clear_range(&ggtt->vm, ggtt->vm.total - PAGE_SIZE, PAGE_SIZE);
>
> - if (USES_PPGTT(dev_priv) && !USES_FULL_PPGTT(dev_priv)) {
> + if (INTEL_PPGTT(dev_priv) == INTEL_PPGTT_ALIASING) {
> ret = i915_gem_init_aliasing_ppgtt(dev_priv);
> if (ret)
> goto err;
> @@ -3275,7 +3201,7 @@ static void bdw_setup_private_ppat(struct intel_ppat *ppat)
> ppat->match = bdw_private_pat_match;
> ppat->clear_value = GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3);
>
> - if (!USES_PPGTT(ppat->i915)) {
> + if (!HAS_PPGTT(ppat->i915)) {
> /* Spec: "For GGTT, there is NO pat_sel[2:0] from the entry,
> * so RTL will always use the value corresponding to
> * pat_sel = 000".
> @@ -3402,7 +3328,7 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
> ggtt->vm.cleanup = gen6_gmch_remove;
> ggtt->vm.insert_page = gen8_ggtt_insert_page;
> ggtt->vm.clear_range = nop_clear_range;
> - if (!USES_FULL_PPGTT(dev_priv) || intel_scanout_needs_vtd_wa(dev_priv))
> + if (intel_scanout_needs_vtd_wa(dev_priv))
> ggtt->vm.clear_range = gen8_ggtt_clear_range;
>
> ggtt->vm.insert_entries = gen8_ggtt_insert_entries;
> @@ -3609,7 +3535,7 @@ int i915_ggtt_init_hw(struct drm_i915_private *dev_priv)
> /* Only VLV supports read-only GGTT mappings */
> ggtt->vm.has_read_only = IS_VALLEYVIEW(dev_priv);
>
> - if (!HAS_LLC(dev_priv) && !USES_PPGTT(dev_priv))
> + if (!HAS_LLC(dev_priv) && !HAS_PPGTT(dev_priv))
> ggtt->vm.mm.color_adjust = i915_gtt_color_adjust;
> mutex_unlock(&dev_priv->drm.struct_mutex);
>
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 2835cacd0d08..3d5554f14dfd 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -474,7 +474,7 @@ static void error_print_engine(struct drm_i915_error_state_buf *m,
> err_printf(m, " SYNC_2: 0x%08x\n",
> ee->semaphore_mboxes[2]);
> }
> - if (USES_PPGTT(m->i915)) {
> + if (HAS_PPGTT(m->i915)) {
> err_printf(m, " GFX_MODE: 0x%08x\n", ee->vm_info.gfx_mode);
>
> if (INTEL_GEN(m->i915) >= 8) {
> @@ -1230,7 +1230,7 @@ static void error_record_engine_registers(struct i915_gpu_state *error,
> ee->reset_count = i915_reset_engine_count(&dev_priv->gpu_error,
> engine);
>
> - if (USES_PPGTT(dev_priv)) {
> + if (HAS_PPGTT(dev_priv)) {
> int i;
>
> ee->vm_info.gfx_mode = I915_READ(RING_MODE_GEN7(engine));
> diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
> index 295e981e4a39..bd6bd8879cab 100644
> --- a/drivers/gpu/drm/i915/i915_params.c
> +++ b/drivers/gpu/drm/i915/i915_params.c
> @@ -82,10 +82,6 @@ i915_param_named_unsafe(enable_hangcheck, bool, 0644,
> "WARNING: Disabling this can cause system wide hangs. "
> "(default: true)");
>
> -i915_param_named_unsafe(enable_ppgtt, int, 0400,
> - "Override PPGTT usage. "
> - "(-1=auto [default], 0=disabled, 1=aliasing, 2=full, 3=full with extended address space)");
> -
> i915_param_named_unsafe(enable_psr, int, 0600,
> "Enable PSR "
> "(0=disabled, 1=enabled) "
> diff --git a/drivers/gpu/drm/i915/i915_params.h b/drivers/gpu/drm/i915/i915_params.h
> index 6c4d4a21474b..7e56c516c815 100644
> --- a/drivers/gpu/drm/i915/i915_params.h
> +++ b/drivers/gpu/drm/i915/i915_params.h
> @@ -41,7 +41,6 @@ struct drm_printer;
> param(int, vbt_sdvo_panel_type, -1) \
> param(int, enable_dc, -1) \
> param(int, enable_fbc, -1) \
> - param(int, enable_ppgtt, -1) \
> param(int, enable_psr, -1) \
> param(int, disable_power_well, -1) \
> param(int, enable_ips, 1) \
> diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
> index d6f7b9fe1d26..eeec902896b9 100644
> --- a/drivers/gpu/drm/i915/i915_pci.c
> +++ b/drivers/gpu/drm/i915/i915_pci.c
> @@ -252,7 +252,7 @@ static const struct intel_device_info intel_ironlake_m_info = {
> .has_llc = 1, \
> .has_rc6 = 1, \
> .has_rc6p = 1, \
> - .has_aliasing_ppgtt = 1, \
> + .ppgtt = INTEL_PPGTT_ALIASING, \
> GEN_DEFAULT_PIPEOFFSETS, \
> GEN_DEFAULT_PAGE_SIZES, \
> CURSOR_OFFSETS
> @@ -297,8 +297,7 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info = {
> .has_llc = 1, \
> .has_rc6 = 1, \
> .has_rc6p = 1, \
> - .has_aliasing_ppgtt = 1, \
> - .has_full_ppgtt = 1, \
> + .ppgtt = INTEL_PPGTT_FULL, \
> GEN_DEFAULT_PIPEOFFSETS, \
> GEN_DEFAULT_PAGE_SIZES, \
> IVB_CURSOR_OFFSETS
> @@ -351,8 +350,7 @@ static const struct intel_device_info intel_valleyview_info = {
> .has_rc6 = 1,
> .has_gmch_display = 1,
> .has_hotplug = 1,
> - .has_aliasing_ppgtt = 1,
> - .has_full_ppgtt = 1,
> + .ppgtt = INTEL_PPGTT_FULL,
> .has_snoop = true,
> .has_coherent_ggtt = false,
> .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
> @@ -399,7 +397,7 @@ static const struct intel_device_info intel_haswell_gt3_info = {
> .page_sizes = I915_GTT_PAGE_SIZE_4K | \
> I915_GTT_PAGE_SIZE_2M, \
> .has_logical_ring_contexts = 1, \
> - .has_full_48bit_ppgtt = 1, \
> + .ppgtt = INTEL_PPGTT_FULL_4LVL, \
> .has_64bit_reloc = 1, \
> .has_reset_engine = 1
>
> @@ -443,8 +441,7 @@ static const struct intel_device_info intel_cherryview_info = {
> .has_rc6 = 1,
> .has_logical_ring_contexts = 1,
> .has_gmch_display = 1,
> - .has_aliasing_ppgtt = 1,
> - .has_full_ppgtt = 1,
> + .ppgtt = INTEL_PPGTT_FULL,
> .has_reset_engine = 1,
> .has_snoop = true,
> .has_coherent_ggtt = false,
> @@ -518,9 +515,7 @@ static const struct intel_device_info intel_skylake_gt4_info = {
> .has_logical_ring_contexts = 1, \
> .has_logical_ring_preemption = 1, \
> .has_guc = 1, \
> - .has_aliasing_ppgtt = 1, \
> - .has_full_ppgtt = 1, \
> - .has_full_48bit_ppgtt = 1, \
> + .ppgtt = INTEL_PPGTT_FULL_4LVL, \
> .has_reset_engine = 1, \
> .has_snoop = true, \
> .has_coherent_ggtt = false, \
> diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
> index 31f6be774833..268c8f286cc0 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.c
> +++ b/drivers/gpu/drm/i915/intel_device_info.c
> @@ -26,6 +26,7 @@
>
> #include "intel_device_info.h"
> #include "i915_drv.h"
> +#include "i915_vgpu.h"
>
> #define PLATFORM_NAME(x) [INTEL_##x] = #x
> static const char * const platform_names[] = {
> @@ -850,6 +851,11 @@ void intel_device_info_runtime_init(struct intel_device_info *info)
> else if (INTEL_GEN(dev_priv) >= 11)
> gen11_sseu_info_init(dev_priv);
>
> + if (IS_GEN6(dev_priv) && intel_vtd_active()) {
> + DRM_INFO("Disabling ppGTT for VT-d support\n");
> + info->ppgtt = INTEL_PPGTT_NONE;
> + }
> +
> /* Initialize command stream timestamp frequency */
> info->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv);
> }
> diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
> index 6eecd64734d5..af7002640cdf 100644
> --- a/drivers/gpu/drm/i915/intel_device_info.h
> +++ b/drivers/gpu/drm/i915/intel_device_info.h
> @@ -25,6 +25,8 @@
> #ifndef _INTEL_DEVICE_INFO_H_
> #define _INTEL_DEVICE_INFO_H_
>
> +#include <uapi/drm/i915_drm.h>
> +
> #include "intel_display.h"
>
> struct drm_printer;
> @@ -74,21 +76,25 @@ enum intel_platform {
> INTEL_MAX_PLATFORMS
> };
>
> +enum intel_ppgtt {
> + INTEL_PPGTT_NONE = I915_GEM_PPGTT_NONE,
> + INTEL_PPGTT_ALIASING = I915_GEM_PPGTT_ALIASING,
> + INTEL_PPGTT_FULL = I915_GEM_PPGTT_FULL,
> + INTEL_PPGTT_FULL_4LVL,
> +};
> +
> #define DEV_INFO_FOR_EACH_FLAG(func) \
> func(is_mobile); \
> func(is_lp); \
> func(is_alpha_support); \
> /* Keep has_* in alphabetical order */ \
> func(has_64bit_reloc); \
> - func(has_aliasing_ppgtt); \
> func(has_csr); \
> func(has_ddi); \
> func(has_dp_mst); \
> func(has_reset_engine); \
> func(has_fbc); \
> func(has_fpga_dbg); \
> - func(has_full_ppgtt); \
> - func(has_full_48bit_ppgtt); \
> func(has_gmch_display); \
> func(has_guc); \
> func(has_guc_ct); \
> @@ -154,6 +160,7 @@ struct intel_device_info {
> enum intel_platform platform;
> u32 platform_mask;
>
> + enum intel_ppgtt ppgtt;
> unsigned int page_sizes; /* page sizes supported by the HW */
>
> u32 display_mmio_offset;
> diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
> index 4b28225320ff..3836a8a3761a 100644
> --- a/drivers/gpu/drm/i915/intel_lrc.c
> +++ b/drivers/gpu/drm/i915/intel_lrc.c
> @@ -418,9 +418,8 @@ execlists_update_context_pdps(struct i915_hw_ppgtt *ppgtt, u32 *reg_state)
>
> static u64 execlists_update_context(struct i915_request *rq)
> {
> + struct i915_hw_ppgtt *ppgtt = rq->gem_context->ppgtt;
> struct intel_context *ce = rq->hw_context;
> - struct i915_hw_ppgtt *ppgtt =
> - rq->gem_context->ppgtt ?: rq->i915->mm.aliasing_ppgtt;
> u32 *reg_state = ce->lrc_reg_state;
>
> reg_state[CTX_RING_TAIL+1] = intel_ring_set_tail(rq->ring, rq->tail);
> @@ -1376,7 +1375,7 @@ execlists_context_pin(struct intel_engine_cs *engine,
> struct intel_context *ce = to_intel_context(ctx, engine);
>
> lockdep_assert_held(&ctx->i915->drm.struct_mutex);
> - GEM_BUG_ON(!(ctx->ppgtt ?: ctx->i915->mm.aliasing_ppgtt));
> + GEM_BUG_ON(!ctx->ppgtt);
>
> if (likely(ce->pin_count++))
> return ce;
> @@ -2031,8 +2030,7 @@ static int gen8_emit_bb_start(struct i915_request *rq,
> * it is unsafe in case of lite-restore (because the ctx is
> * not idle). PML4 is allocated during ppgtt init so this is
> * not needed in 48-bit.*/
> - if (rq->gem_context->ppgtt &&
> - (intel_engine_flag(rq->engine) & rq->gem_context->ppgtt->pd_dirty_rings) &&
> + if ((intel_engine_flag(rq->engine) & rq->gem_context->ppgtt->pd_dirty_rings) &&
> !i915_vm_is_48bit(&rq->gem_context->ppgtt->vm) &&
> !intel_vgpu_active(rq->i915)) {
> ret = intel_logical_ring_emit_pdps(rq);
> @@ -2634,7 +2632,6 @@ static void execlists_init_reg_state(u32 *regs,
> struct intel_ring *ring)
> {
> struct drm_i915_private *dev_priv = engine->i915;
> - struct i915_hw_ppgtt *ppgtt = ctx->ppgtt ?: dev_priv->mm.aliasing_ppgtt;
> u32 base = engine->mmio_base;
> bool rcs = engine->class == RENDER_CLASS;
>
> @@ -2706,12 +2703,12 @@ static void execlists_init_reg_state(u32 *regs,
> CTX_REG(regs, CTX_PDP0_UDW, GEN8_RING_PDP_UDW(engine, 0), 0);
> CTX_REG(regs, CTX_PDP0_LDW, GEN8_RING_PDP_LDW(engine, 0), 0);
>
> - if (i915_vm_is_48bit(&ppgtt->vm)) {
> + if (i915_vm_is_48bit(&ctx->ppgtt->vm)) {
> /* 64b PPGTT (48bit canonical)
> * PDP0_DESCRIPTOR contains the base address to PML4 and
> * other PDP Descriptors are ignored.
> */
> - ASSIGN_CTX_PML4(ppgtt, regs);
> + ASSIGN_CTX_PML4(ctx->ppgtt, regs);
> }
>
> if (rcs) {
> diff --git a/drivers/gpu/drm/i915/selftests/huge_pages.c b/drivers/gpu/drm/i915/selftests/huge_pages.c
> index 8d03f64eabd7..09ea65a29d98 100644
> --- a/drivers/gpu/drm/i915/selftests/huge_pages.c
> +++ b/drivers/gpu/drm/i915/selftests/huge_pages.c
> @@ -1436,7 +1436,7 @@ static int igt_ppgtt_pin_update(void *arg)
> * huge-gtt-pages.
> */
>
> - if (!USES_FULL_48BIT_PPGTT(dev_priv)) {
> + if (!HAS_FULL_48BIT_PPGTT(dev_priv)) {
> pr_info("48b PPGTT not supported, skipping\n");
> return 0;
> }
> @@ -1687,10 +1687,9 @@ int i915_gem_huge_page_mock_selftests(void)
> SUBTEST(igt_mock_ppgtt_huge_fill),
> SUBTEST(igt_mock_ppgtt_64K),
> };
> - int saved_ppgtt = i915_modparams.enable_ppgtt;
> struct drm_i915_private *dev_priv;
> - struct pci_dev *pdev;
> struct i915_hw_ppgtt *ppgtt;
> + struct pci_dev *pdev;
> int err;
>
> dev_priv = mock_gem_device();
> @@ -1698,7 +1697,7 @@ int i915_gem_huge_page_mock_selftests(void)
> return -ENOMEM;
>
> /* Pretend to be a device which supports the 48b PPGTT */
> - i915_modparams.enable_ppgtt = 3;
> + mkwrite_device_info(dev_priv)->ppgtt = INTEL_PPGTT_FULL_4LVL;
>
> pdev = dev_priv->drm.pdev;
> dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(39));
> @@ -1731,9 +1730,6 @@ int i915_gem_huge_page_mock_selftests(void)
>
> out_unlock:
> mutex_unlock(&dev_priv->drm.struct_mutex);
> -
> - i915_modparams.enable_ppgtt = saved_ppgtt;
> -
> drm_dev_put(&dev_priv->drm);
>
> return err;
> @@ -1753,7 +1749,7 @@ int i915_gem_huge_page_live_selftests(struct drm_i915_private *dev_priv)
> struct i915_gem_context *ctx;
> int err;
>
> - if (!USES_PPGTT(dev_priv)) {
> + if (!HAS_PPGTT(dev_priv)) {
> pr_info("PPGTT not supported, skipping live-selftests\n");
> return 0;
> }
> diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_context.c b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
> index 76df25aa90c9..913c0f83f86a 100644
> --- a/drivers/gpu/drm/i915/selftests/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/selftests/i915_gem_context.c
> @@ -535,7 +535,6 @@ static int igt_ctx_exec(void *arg)
> IGT_TIMEOUT(end_time);
> LIST_HEAD(objects);
> unsigned long ncontexts, ndwords, dw;
> - bool first_shared_gtt = true;
> int err = -ENODEV;
>
> /*
> @@ -561,12 +560,7 @@ static int igt_ctx_exec(void *arg)
> struct i915_gem_context *ctx;
> unsigned int id;
>
> - if (first_shared_gtt) {
> - ctx = __create_hw_context(i915, file->driver_priv);
> - first_shared_gtt = false;
> - } else {
> - ctx = i915_gem_create_context(i915, file->driver_priv);
> - }
> + ctx = i915_gem_create_context(i915, file->driver_priv);
> if (IS_ERR(ctx)) {
> err = PTR_ERR(ctx);
> goto out_unlock;
> @@ -865,33 +859,6 @@ static int igt_switch_to_kernel_context(void *arg)
> return err;
> }
>
> -static int fake_aliasing_ppgtt_enable(struct drm_i915_private *i915)
> -{
> - struct drm_i915_gem_object *obj;
> - int err;
> -
> - err = i915_gem_init_aliasing_ppgtt(i915);
> - if (err)
> - return err;
> -
> - list_for_each_entry(obj, &i915->mm.bound_list, mm.link) {
> - struct i915_vma *vma;
> -
> - vma = i915_vma_instance(obj, &i915->ggtt.vm, NULL);
> - if (IS_ERR(vma))
> - continue;
> -
> - vma->flags &= ~I915_VMA_LOCAL_BIND;
> - }
> -
> - return 0;
> -}
> -
> -static void fake_aliasing_ppgtt_disable(struct drm_i915_private *i915)
> -{
> - i915_gem_fini_aliasing_ppgtt(i915);
> -}
> -
> int i915_gem_context_mock_selftests(void)
> {
> static const struct i915_subtest tests[] = {
> @@ -918,31 +885,9 @@ int i915_gem_context_live_selftests(struct drm_i915_private *dev_priv)
> SUBTEST(igt_ctx_exec),
> SUBTEST(igt_ctx_readonly),
> };
> - bool fake_alias = false;
> - int err;
>
> if (i915_terminally_wedged(&dev_priv->gpu_error))
> return 0;
>
> - /* Install a fake aliasing gtt for exercise */
> - if (USES_PPGTT(dev_priv) && !dev_priv->mm.aliasing_ppgtt) {
> - mutex_lock(&dev_priv->drm.struct_mutex);
> - err = fake_aliasing_ppgtt_enable(dev_priv);
> - mutex_unlock(&dev_priv->drm.struct_mutex);
> - if (err)
> - return err;
> -
> - GEM_BUG_ON(!dev_priv->mm.aliasing_ppgtt);
> - fake_alias = true;
> - }
> -
> - err = i915_subtests(tests, dev_priv);
> -
> - if (fake_alias) {
> - mutex_lock(&dev_priv->drm.struct_mutex);
> - fake_aliasing_ppgtt_disable(dev_priv);
> - mutex_unlock(&dev_priv->drm.struct_mutex);
> - }
> -
> - return err;
> + return i915_subtests(tests, dev_priv);
> }
> diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
> index 128ad1cf0647..4365979d8222 100644
> --- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
> +++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
> @@ -351,7 +351,7 @@ static int igt_evict_contexts(void *arg)
> * where the GTT space of the request is separate from the GGTT
> * allocation required to build the request.
> */
> - if (!USES_FULL_PPGTT(i915))
> + if (!HAS_FULL_PPGTT(i915))
> return 0;
>
> mutex_lock(&i915->drm.struct_mutex);
> diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> index 8e2e269db97e..17b5aaaa7a50 100644
> --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
> @@ -153,7 +153,7 @@ static int igt_ppgtt_alloc(void *arg)
>
> /* Allocate a ppggt and try to fill the entire range */
>
> - if (!USES_PPGTT(dev_priv))
> + if (!HAS_PPGTT(dev_priv))
> return 0;
>
> ppgtt = __hw_ppgtt_create(dev_priv);
> @@ -1001,7 +1001,7 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
> IGT_TIMEOUT(end_time);
> int err;
>
> - if (!USES_FULL_PPGTT(dev_priv))
> + if (!HAS_FULL_PPGTT(dev_priv))
> return 0;
>
> file = mock_file(dev_priv);
> diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
> index a4446f452040..298b2e197744 100644
> --- a/include/uapi/drm/i915_drm.h
> +++ b/include/uapi/drm/i915_drm.h
> @@ -412,6 +412,14 @@ typedef struct drm_i915_irq_wait {
> int irq_seq;
> } drm_i915_irq_wait_t;
>
> +/*
> + * Different modes of per-process Graphics Translation Table,
> + * see I915_PARAM_HAS_ALIASING_PPGTT
> + */
> +#define I915_GEM_PPGTT_NONE 0
> +#define I915_GEM_PPGTT_ALIASING 1
> +#define I915_GEM_PPGTT_FULL 2
> +
> /* Ioctl to query kernel params:
> */
> #define I915_PARAM_IRQ_ACTIVE 1
> --
> 2.19.0
>
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