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From: Sasha Levin <sashal@kernel.org>
To: Rob Clark <robdclark@chromium.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
	stable@vger.kernel.org, Stephen Boyd <sboyd@kernel.org>,
	Stephen Boyd <swboyd@chromium.org>,
	Jordan Crouse <jcrouse@codeaurora.org>,
	Sean Paul <seanpaul@chromium.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	freedreno <freedreno@lists.freedesktop.org>
Subject: Re: [PATCH AUTOSEL 5.2 42/76] drm/msm: stop abusing dma_map/unmap for cache
Date: Tue, 13 Aug 2019 22:03:14 -0400	[thread overview]
Message-ID: <20190814020314.GG17747@sasha-vm> (raw)
In-Reply-To: <CAJs_Fx4ddE-85uA3S+YLPat4uX8Mk9zRU2SFm2xmGgmAFWPEyg@mail.gmail.com>

On Fri, Aug 02, 2019 at 05:14:35PM -0700, Rob Clark wrote:
>Hi Sasha,
>
>It's probably best *not* to backport this patch.. drm/msm abuses the
>DMA API in a way that it is not intended be used, to work around the
>lack of cache sync API exported to kernel modules on arm/arm64.  I
>couldn't really guarantee that this patch does the right thing on
>older versions of DMA API, so best to leave things as they were.

Now dropped, thank you.

--
Thanks,
Sasha

  reply	other threads:[~2019-08-14  2:03 UTC|newest]

Thread overview: 78+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-02 13:18 [PATCH AUTOSEL 5.2 01/76] powerpc: fix off by one in max_zone_pfn initialization for ZONE_DMA Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 02/76] netfilter: nfnetlink: avoid deadlock due to synchronous request_module Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 03/76] vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 04/76] vfio-ccw: Don't call cp_free if we are processing a channel program Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 05/76] netfilter: Fix rpfilter dropping vrf packets by mistake Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 06/76] netfilter: nf_tables: fix module autoload for redir Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 07/76] netfilter: conntrack: always store window size un-scaled Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 08/76] netfilter: nft_hash: fix symhash with modulus one Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 09/76] scripts/sphinx-pre-install: fix script for RHEL/CentOS Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 10/76] scripts/sphinx-pre-install: don't use LaTeX with CentOS 7 Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 11/76] scripts/sphinx-pre-install: fix latexmk dependencies Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 12/76] rq-qos: don't reset has_sleepers on spurious wakeups Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 13/76] rq-qos: set ourself TASK_UNINTERRUPTIBLE after we schedule Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 14/76] rq-qos: use a mb for got_token Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 15/76] netfilter: nf_tables: Support auto-loading for inet nat Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 16/76] drm/amd/display: No audio endpoint for Dell MST display Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 17/76] drm/amd/display: Clock does not lower in Updateplanes Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 18/76] drm/amd/display: Wait for backlight programming completion in set backlight level Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 19/76] drm/amd/display: fix DMCU hang when going into Modern Standby Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 20/76] drm/amd/display: use encoder's engine id to find matched free audio device Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 21/76] drm/amd/display: put back front end initialization sequence Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 22/76] drm/amd/display: allocate 4 ddc engines for RV2 Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 23/76] drm/amd/display: Fix dc_create failure handling and 666 color depths Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 24/76] drm/amd/display: Only enable audio if speaker allocation exists Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 25/76] drm/amd/display: Increase size of audios array Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 26/76] iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 27/76] nl80211: fix NL80211_HE_MAX_CAPABILITY_LEN Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 28/76] mac80211: fix possible memory leak in ieee80211_assign_beacon Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 29/76] mac80211: don't warn about CW params when not using them Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 30/76] allocate_flower_entry: should check for null deref Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 31/76] hwmon: (occ) Fix division by zero issue Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 32/76] hwmon: (nct6775) Fix register address and added missed tolerance for nct6106 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 33/76] ARM: dts: imx6ul: fix clock frequency property name of I2C buses Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 34/76] x86/mm: Check for pfn instead of page in vmalloc_sync_one() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 35/76] x86/mm: Sync also unmappings in vmalloc_sync_all() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 36/76] mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 37/76] powerpc/papr_scm: Force a scm-unbind if initial scm-bind fails Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 38/76] arm64: Force SSBS on context switch Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 39/76] arm64: entry: SP Alignment Fault doesn't write to FAR_EL1 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 40/76] iommu/vt-d: Check if domain->pgd was allocated Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 41/76] drm/msm/dpu: Correct dpu encoder spinlock initialization Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 42/76] drm/msm: stop abusing dma_map/unmap for cache Sasha Levin
2019-08-03  0:14   ` Rob Clark
2019-08-14  2:03     ` Sasha Levin [this message]
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 43/76] drm: silence variable 'conn' set but not used Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 44/76] arm64: dts: imx8mm: Correct SAI3 RXC/TXFS pin's mux option #1 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 45/76] arm64: dts: imx8mq: fix SAI compatible Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 46/76] cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 47/76] s390/qdio: add sanity checks to the fast-requeue path Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 48/76] ALSA: compress: Fix regression on compressed capture streams Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 49/76] ALSA: compress: Prevent bypasses of set_params Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 50/76] ALSA: compress: Don't allow paritial drain operations on capture streams Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 51/76] ALSA: compress: Be more restrictive about when a drain is allowed Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 52/76] perf script: Fix off by one in brstackinsn IPC computation Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 53/76] perf tools: Fix proper buffer size for feature processing Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 54/76] perf stat: Fix segfault for event group in repeat mode Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 55/76] perf session: Fix loading of compressed data split across adjacent records Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 56/76] perf probe: Avoid calling freeing routine multiple times for same pointer Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 57/76] drbd: dynamically allocate shash descriptor Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 58/76] ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 59/76] nvme: ignore subnqn for ADATA SX6000LNP Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 60/76] nvme: fix memory leak caused by incorrect subsystem free Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 61/76] nvme: fix multipath crash when ANA is deactivated Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 62/76] ARM: davinci: fix sleep.S build error on ARMv4 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 63/76] ARM: dts: bcm: bcm47094: add missing #cells for mdio-bus-mux Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 64/76] scsi: megaraid_sas: fix panic on loading firmware crashdump Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 65/76] scsi: ibmvfc: fix WARN_ON during event pool release Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 66/76] scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 67/76] test_firmware: fix a memory leak bug Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 68/76] sched/fair: Don't free p->numa_faults with concurrent readers Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 69/76] sched/fair: Use RCU accessors consistently for ->numa_group Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 70/76] tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 71/76] perf/x86/intel: Fix SLOTS PEBS event constraint Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 72/76] perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 73/76] perf/x86: Apply more accurate check on hypervisor platform Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 74/76] perf/core: Fix creating kernel counters for PMUs that override event->cpu Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 75/76] s390/dma: provide proper ARCH_ZONE_DMA_BITS value Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 76/76] gen_compile_commands: lower the entry count threshold Sasha Levin

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