- 06 Sep, 2019 6 commits
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Andi Shyti authored
Refactor the GT power management interface to work through the GT now that it is under the control of gt/ Based on a patch by Chris Wilson. Signed-off-by:
Andi Shyti <andi.shyti@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Michel Thierry authored
Gen12 has subtle changes in the reg state context offsets (some fields are gone, some are in a different location), compared to previous Gens. The simplest approach seems to be keeping Gen12 (and future platform) changes apart from the previous gens, while keeping the registers that are contiguous in functions we can reuse. v2: alias, virtual engine, rpcs, prune unused regs v3: use engine base (Daniele), take ctx_bb for all Bspec: 46255 Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: José Roberto de Souza <jose.souza@intel.com> Signed-off-by:
Michel Thierry <michel.thierry@intel.com> Signed-off-by:
Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Tested-by:
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Mika Kuoppala authored
Daniele pointed out that relative mmio works differently in on context restore. Instead of adding the engine mmio base to offset, it masks out the base and adds bits [12:2] to current engine base. This should allow us to construct context register state to be applicable to all instances, including virtual. And avoid the trouble of updating the registers on virtual instances when submitting work. v2: only enable for gen12 for now (Mika) v3: make enabling readable (Chris) Bspec: 20206 Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: John Harrison <John.C.Harrison@Intel.com> Suggested-by:
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Matt Roper authored
Unlike gen11, which always ran at 50MHz when the cdclk PLL was disabled, TGL runs at refclk/2. The 50MHz croclk/2 is only used by hardware during some power state transitions. Bspec: 49201 Cc: José Roberto de Souza <jose.souza@intel.com> Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190905181337.23727-1-matthew.d.roper@intel.comReviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com>
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Ville Syrjälä authored
This adds basic immutable support for the zpos property. The zpos increases from bottom to top: primary, sprites, cursor. Signed-off-by:
Simon Ser <contact@emersion.fr> Link: https://patchwork.freedesktop.org/patch/msgid/YSH9PasoADJJdNJCSdI4m55ankIBsCaoSgkw-NQ5dlruCAxc8J-SQwVl5n3ddSAMDLTdbdyQvkONmtbjkUU-TQk5VIu1p-aZRO1OjjuSxjY=@emersion.frReviewed-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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Chris Wilson authored
If we make sure we grab a strong reference to each object as we dump it, we can reduce the locks outside of our iterators to an rcu_read_lock. This should prevent errors like: [ 2138.371911] BUG: KASAN: use-after-free in per_file_stats+0x43/0x380 [i915] [ 2138.371924] Read of size 8 at addr ffff888223651000 by task cat/8293 [ 2138.371947] CPU: 0 PID: 8293 Comm: cat Not tainted 5.3.0-rc6-CI-Custom_4352+ #1 [ 2138.371953] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./J4205-ITX, BIOS P1.40 07/14/2017 [ 2138.371959] Call Trace: [ 2138.371974] dump_stack+0x7c/0xbb [ 2138.372099] ? per_file_stats+0x43/0x380 [i915] [ 2138.372108] print_address_description+0x73/0x3a0 [ 2138.372231] ? per_file_stats+0x43/0x380 [i915] [ 2138.372352] ? per_file_stats+0x43/0x380 [i915] [ 2138.372362] __kasan_report+0x14e/0x192 [ 2138.372489] ? per_file_stats+0x43/0x380 [i915] [ 2138.372502] kasan_report+0xe/0x20 [ 2138.372625] per_file_stats+0x43/0x380 [i915] [ 2138.372751] ? i915_panel_show+0x110/0x110 [i915] [ 2138.372761] idr_for_each+0xa7/0x160 [ 2138.372773] ? idr_get_next_ul+0x110/0x110 [ 2138.372782] ? do_raw_spin_lock+0x10a/0x1d0 [ 2138.372923] print_context_stats+0x264/0x510 [i915] Signed-off-by:
David Weinehall <david.weinehall@linux.intel.com> Reviewed-by:
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- 05 Sep, 2019 8 commits
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José Roberto de Souza authored
Tiger Lake has up to 4 pipes so the mask would need to be 0xf instead of 0x7. Do not hardcode the mask so it allows the fake MST encoders to connect to all pipes no matter how many the platform has. Iterating over all pipes to keep consistent with intel_ddi_init(). Initialy this patch was replaced by commit 4eaceea3 ("drm/i915: Fix DP-MST crtc_mask") but userspace it not correctly using encoder.possible_crtcs and it was reverted by commit e838bfa8 ("Revert "drm/i915: Fix DP-MST crtc_mask"") Userspace should be fixed but it might take a while, so bringing this patch back for now. Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Signed-off-by:
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José Roberto de Souza authored
WA 1409120013 is also valid for TGL, so lets check for ">= 11". BSpec: 52890 Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Clinton Taylor <Clinton.A.Taylor@intel.com> Signed-off-by:
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Lucas De Marchi authored
Add case for gen == 12 and add MISSING_CASE() for future gens. We were already handling gen12 as the default, so this doesn't change the current behavior. BSpec: 19481 and 44980 Cc: CQ Tang <cq.tang@intel.com> Signed-off-by:
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Lucas De Marchi authored
SAGV is not currently working for Tiger Lake. We better disable it until the implementation is stabilized and we can enable it. HSDES: 1409542895 2208191909 Signed-off-by:
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Lucas De Marchi authored
Gen 12 onwards moves the DP_TP_* registers to be transcoder-based rather than port-based. This adds the new register addresses and changes all the callers to use the register saved in intel_dp->regs.*. This is filled out when preparing to enable the port so we take into account if we should use the transcoder or the port. v2: reimplement by stashing the registers we want to access under intel_dp->reg. Now they are initialized when enabling the port. Ville suggested to store the transcoder to be used exclusively by TGL+. After implementing I thought just storing the register directly made it cleaner. Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Lucas De Marchi authored
DP_TP_{CTL,STATUS} should only be programmed when the encoder is intel_dp. Checking its current usages intel_disable_ddi_buf() is the only offender, with other places being protected by checks like pipe_config->fec_enable that is only set by intel_dp. v3 (José): - Using intel_crtc_has_dp_encoder() instead of intel_encoder_is_dp() (Ville) Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: -
José Roberto de Souza authored
For older gens PSR IIR and IMR have fixed addresses. From TGL onwards those registers moved to each transcoder offset. The bits for the registers are defined without an offset per transcoder as right now we have one register per transcoder. So add a fake "trans_shift" when calculating the bits offsets: it will be 0 for gen12+ and psr.transcoder otherwise. v2 (Lucas): change the implementation to use trans_shift instead of getting each bit value with a different macro Cc: Imre Deak <imre.deak@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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José Roberto de Souza authored
It was enabling and checking PSR interruptions in every transcoder while it should keep the interruptions on the non-used transcoders masked. While doing this it gives us trouble on Tiger Lake if we are reading/writing to registers of disabled transcoders since from gen12 onwards the registers are relative to the transcoder. Instead of forcing them ON to access those registers, just avoid the accesses as they are not needed. v2 (Lucas): - Explain why we can't keep accessing all transcoders - Remove TODO about extending the irq handling to multiple instances: when/if implementing multiple instances it's pretty clear by the singleton psr that it needs to be extended - Fix intel_psr_debug_set() calling psr_irq_control() with psr.transcoder not set yet (from Imre). Now we only set the debug register right away if psr is already enabled. Otherwise we just record the value to be set when enabling the source. - Do not depend on the value of TRANSCODER_A. Just be relative to it (from Imre) - handle psr error last so we don't schedule the work before handling the other flags v3: - Adding a warning about setting reserverd bits on EDP_PSR_IMR Cc: Imre Deak <imre.deak@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by:
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- 04 Sep, 2019 10 commits
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Daniel Vetter authored
The cpu (de)tiler hw is gone, this stopped being useful. Plus it never supported any of the fancy new tiling formats, which means userspace also stopped using the magic side-channel this provides. This would totally break a lot of the igts, but they're already broken for the same reasons as userspace on gen12 would be. v2: Look at ggtt->num_fences instead, that also avoids the need for a comment (Chris). This also means that gen12 support really needs to make sure num_fences is set to 0. There is a patch for that, but it checks for HAS_MAPPABLE_APERTURE, which I'm not sure is the right thing really. Adding relevant people. Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Stuart Summers <stuart.summers@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Kenneth Graunke <kenneth@whitecape.org> Cc: Jason Ekstrand <jason@jlekstrand.net> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
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Ville Syrjälä authored
This reverts commit 4eaceea3. Several userspace clients (modesetting ddx and mutter+wayland at least) handle encoder.possible_crtcs incorrectly. What they essentially do is the following: possible_crtcs = ~0; for_each_possible_encoder(connector) possible_crtcs &= encoder->possible_crtcs; Ie. they calculate the intersection of the possible_crtcs for the connector when they really should be calculating the union instead. In our case each MST encoder now has just one unique bit set, and so the intersection is always zero. The end result is that MST connectors can't be lit up because no crtc can be found to drive them. I've submitted a fix for the modesetting ddx [1], and complained on #wayland about mutter, so hopefully the situation will improve in the future. In the meantime we have regression, and so must go back to the old way of misconfiguring possible_crtcs in the kernel. [1] https://gitlab.freedesktop.org/xorg/xserver/merge_requests/277 Cc: Jonas Ådahl <jadahl@gmail.com> Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111507Signed-off-by:
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Chris Wilson authored
This bit was fliped on for "syncing dependencies between camera and graphics". BSpec has no recollection why, and it is causing unrecoverable GPU hangs with Vulkan compute workloads. From BSpec, setting bit5 to 0 enables relaxed padding requirements for buffers, 1D and 2D non-array, non-MSAA, non-mip-mapped linear surfaces; and *must* be set to 0h on skl+ to ensure "Out of Bounds" case is suppressed. Reported-by:
Jason Ekstrand <jason@jlekstrand.net> Suggested-by:
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Swati Sharma authored
For glk, add hw read out to create hw blob of gamma lut values. v4: -No need to initialize *blob [Jani] -Removed right shifts [Jani] -Dropped dev local var [Jani] v5: -Returned blob instead of assigning it internally within the function [Ville] -Renamed glk_get_color_config() to glk_read_luts() [Ville] -Added degamma validation [Ville] v9: -80 character limit [Uma] -Made read func para as const [Ville, Uma] Signed-off-by:Swati Sharma <swati2.sharma@intel.com> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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Swati Sharma authored
For ilk, add hw read out to create hw blob of gamma lut values. v4: -No need to initialize *blob [Jani] -Removed right shifts [Jani] -Dropped dev local var [Jani] v5: -Returned blob instead of assigning it internally within the function [Ville] -Renamed ilk_get_color_config() to ilk_read_luts() [Ville] v9: -80 character limit [Uma] -Made read func para as const [Ville, Uma] -Renamed ilk_read_gamma_lut() to ilk_read_lut_10() [Uma, Ville] v10: -Made ilk_read_luts() static [Jani] -ilk_load_lut_10 has lut_size, not (lut_size - 1) [Jani] Signed-off-by: -
Swati Sharma authored
For the legacy(gen < 4) gamma, add hw read out to create hw blob of gamma lut values. Also, add function intel_color_lut_pack to convert hw value with given bit precision to lut property val. v4: -No need to initialize *blob [Jani] -Removed right shifts [Jani] -Dropped dev local var [Jani] v5: -Returned blob instead of assigning it internally within the function [Ville] -Renamed function i9xx_get_color_config() to i9xx_read_luts() -Renamed i9xx_get_config_internal() to i9xx_read_lut_8() [Ville] v9: -Change in commit message [Jani, Uma] -Wrap commit within 75 characters [Uma] -Use macro for 256 [Uma] -Made read func para as const [Ville, Uma] v10: -Made i9xx_read_luts() static [Jani] Signed-off-by: -
Swati Sharma authored
Add macro to compare hw/sw gamma lut values. First need to check whether hw/sw gamma mode matches or not. If not no need to compare lut values, if matches then only compare lut entries. v5: -Called PIPE_CONF_CHECK_COLOR_LUT inside if (!adjust) [Jani] -Added #undef PIPE_CONF_CHECK_COLOR_LUT [Jani] v8: -Added check for gamma mode before gamma lut entry comparison [Jani] -Split patch 3 into 4 patches Signed-off-by:Uma Shankar <uma.shankar@intel.com> Reviewed-by:
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Swati Sharma authored
Add func intel_color_lut_equal() to compare hw/sw gamma lut values. Since hw/sw gamma lut sizes and lut entries comparison will be different for different gamma modes, add gamma mode dependent checks. v3: -Rebase v4: -Renamed intel_compare_color_lut() to intel_color_lut_equal() [Jani] -Added the default label above the correct label [Jani] -Corrected smatch warn "variable dereferenced before check" [Dan Carpenter] v5: -Added condition (!blob1 && !blob2) return true [Jani] v6: -Made patch11 as patch3 [Jani] v8: -Split patch 3 into 4 patches -Optimized blob check condition [Ville] v9: -Exclude spilt gamma mode (bdw and ivb platforms) as there is exception in way gamma values are written in hardware [Ville] -Added exception made in commit [Uma] -Dropped else, character limit and indentation [Uma] -Added multi segmented gama mode for icl+ platforms [Uma] v10: -Dropped multi segmented mode for icl+ platforms [Jani] -Removed references of sw and hw state in compare code [Jani] -Dropped inline from func [Jani] Signed-off-by: -
Swati Sharma authored
Each platform supports different gamma modes and each gamma mode has different bit precision. Here bit precision corresponds to number of bits the hw LUT supports. Add func per platform to return bit precision corresponding to gamma mode which will be later used as a parameter in lut comparison function intel_color_lut_equal(). This is done for legacy, ilk, glk and their variant platforms. v6: -Added func intel_color_get_bit_precision() to get bit precision for gamma and degamma lut readout depending upon platform and corresponding to load_luts() [Ankit] -Made patch11 as patch3 [Jani] v7: -Renamed func intel_color_get_bit_precision() to intel_color_get_gamma_bit_precision() -Added separate function/platform for gamma bit precision [Ville] -Corrected checkpatch warnings v8: -Split patch 3 into 4 separate patches v9: -Changed commit message, gave more info [Uma] -Added precision func for icl+ platform v10: -Removed precision func for chv and icl+ platforms [Jani] -Added gamma_enable check once [Jani] Signed-off-by: -
Swati Sharma authored
Add debug log for color related parameters like gamma_mode, gamma_enable, csc_enable, etc inside intel_dump_pipe_config(). v6: -Added debug log for color para in intel_dump_pipe_config [Jani] v7: -Split patch 3 into 4 patches v8: -Corrected alignment [Uma] Signed-off-by:
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- 03 Sep, 2019 5 commits
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Chris Wilson authored
It's been a long time since we accidentally reported -EIO upon wedging, it can now only be generated by failure to swap in a page. Signed-off-by:
Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-4-chris@chris-wilson.co.uk
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Chris Wilson authored
This function was never used and probably will never be used, so remove it. Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190901110431.12393-1-chris@chris-wilson.co.uk
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Chris Wilson authored
obj->pin_global was originally used as a means to keep the shrinker off the active scanout, but we use the vma->pin_count itself for that and the obj->frontbuffer to delay shrinking active framebuffers. The other role that obj->pin_global gained was for spotting display objects inside GEM and working harder to keep those coherent; for which we can again simply inspect obj->frontbuffer directly. Coming up next, we will want to manipulate the pin_global counter outside of the principle locks, so would need to make pin_global atomic. However, since obj->frontbuffer is already managed atomically, it makes sense to use that the primary key for display objects instead of having pin_global. Ville pointed out the principle difference is that obj->frontbuffer is set for as long as an intel_framebuffer is attached to an object, but obj->pin_global was only raised for as long as the object was active. In practice, this means that we consider the object as being on the scanout for longer than is strictly required, causing us to be more proactive in flushing -- though it should be true that we would have flushed eventually when the back became the front, except that on the flip path that flush is async but when hit from another ioctl it will be synchronous. v2: i915_gem_object_is_framebuffer() Signed-off-by:
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Chris Wilson authored
The aliasing-ppgtt is constrained to be the same size as the Global GTT since it aliases the same address space. Simplifying gtt size reporting in this case. Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190902040303.14195-2-chris@chris-wilson.co.uk
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Chris Wilson authored
The aliasing-ppgtt is not allowed to be smaller than the ggtt, nor should we advertise it as being any bigger, or else we may get sued for false advertisement. Testcase: igt/gem_exec_big Fixes: 0b718ba1 ("drm/i915/gtt: Downgrade Cherryview back to aliasing-ppgtt") Signed-off-by:
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- 02 Sep, 2019 3 commits
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Ville Syrjälä authored
Reogranize the HDMI deep color state computation to just loop over possible bpc values. Avoids having to maintain so many variants of the clock etc. The current code also looks confused w.r.t. port_clock vs. bw_constrained. It would happily update port_clock for deep color but then not actually enable deep color due to bw_constrained being set. The new logic handles that case correctly. v2: Pull stuff into separate funcs (Jani) Reviewed-by:
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Ville Syrjälä authored
enum port is a mess now because it no longer matches the spec at all. Let's start to dig ourselves out of this hole by reducing our reliance on port_name(). This should at least make a bunch of debug messages a bit more sensible while we think how to fill the the hole properly. Based on the following cocci script with a lot of manual cleanup (all the format strings etc.): @@ expression E; @@ ( - port_name(E->port) + E->base.base.id, E->base.name | - port_name(E.port) + E.base.base.id, E.base.name ) @@ enum port P; expression E; @@ P = E->port <... - port_name(P) + E->base.base.id, E->base.name ...> @@ enum port P; expression E; @@ P = E.port <... - port_name(P) + E.base.base.id, E.base.name ...> @@ expression E; @@ { - enum port P = E; ... when != P } Signed-off-by: -
Ville Syrjälä authored
My attempt at allowing MST to use the higher color depths has regressed some configurations. Apparently people have setups where all MST streams will fit into the DP link with 8bpc but won't fit with higher color depths. What we really should be doing is reducing the bpc for all the streams on the same link until they start to fit. But that requires a bit more work, so in the meantime let's revert back closer to the old behavior and limit MST to at most 8bpc. Cc: stable@vger.kernel.org Cc: Lyude Paul <lyude@redhat.com> Tested-by:
Geoffrey Bennett <gmux22@gmail.com> Fixes: f1477219 ("drm/i915: Remove the 8bpc shackles from DP MST") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111505Signed-off-by:
Lyude Paul <lyude@redhat.com>
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- 31 Aug, 2019 1 commit
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Chris Wilson authored
We use the context->pin_mutex to serialise updates to the OA config and the registers values written into each new context. Document this relationship and assert we do hold the context->pin_mutex as used by gen8_configure_all_contexts() to serialise updates to the OA config itself. v2: Add a white-lie for when we call intel_gt_resume() from init. v3: Lie while we have the context pinned inside atomic reset. Signed-off-by:
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- 30 Aug, 2019 7 commits
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Matt Roper authored
The bspec was recently updated with these new cdclk values for ICL, EHL, and TGL. Bspec: 20598 Bspec: 49201 Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
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Matt Roper authored
The bspec has just recently been updated with new cdclk values that require the use of a /2 CD2X divider rather than a /1 divider. Once we add the divider selection logic to ICL+ cdclk programming, we have pretty much the same logic we were already using on CNL, so it's simpler to drop icl_set_cdclk() completely and reuse cnl_set_cdclk() on gen11+ platforms as well. v2: - Using ICL_CDCLK_CD2X_PIPE_NONE + BXT_CDCLK_CD2X_PIPE(pipe) for TGL is correct, but looks really confusing. Add some TGL_ macros that alias these to avoid confusion. (Ville) - Use DIV_ROUND_CLOSEST rather than / when applying the divider. (Ville) Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Maarten Lankhorst authored
When we moved the code to disable crtc's to a separate patch, we forgot to ensure that for_each_oldnew_intel_crtc_in_state_reverse() was moved as well. Signed-off-by:
Manasi Navare <manasi.d.navare@intel.com> Reviewed-by:
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Chris Wilson authored
Since i915_address_space is now RCU protected, we can do the vm_idr lookup without taking the vm_idr_mutex, just with the rcu_read_lock() instead. Signed-off-by:
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Chris Wilson authored
This is no longer used anywhere and so can be removed. However, tracking the dirty status on the ppgtt doesn't work very well if the ppgtt is shared, so perhaps for the best that it is no longer required. Signed-off-by:
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Chris Wilson authored
With the upcoming change in timing (dramatically reducing the latency between manipulating the ppGTT and execution), no amount of tweaking could save Cherryview, it would always fail to invalidate its TLB. Signed-off-by:
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Chris Wilson authored
With the upcoming change in timing (dramatically reducing the latency between manipulating the ppGTT and execution), no amount of tweaking could save Baytrail, it would always fail to invalidate its TLB. Ville was right, Baytrail is beyond hope. v2: Rollback on all gen7; same timing instability on TLB invalidation. Signed-off-by:
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