Re: [Intel-gfx] [PATCH v2] drm/i915: Fix potential spectre vulnerability
On 03/11/2023 03:32, Kunwu Chan wrote:
> Fix smatch warning:
> drivers/gpu/drm/i915/gem/i915_gem_context.c:847 set_proto_ctx_sseu()
> warn: potential spectre issue 'pc->user_engines' [r] (local cap)
>
> Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create
> parameters (v5)")
> Cc: # v5.15+
> Signed-off-by: Kunwu Chan
> Suggested-by: Tvrtko Ursulin
> Reviewed-by: Tvrtko Ursulin
Where did you receive this tag? There is nothing under link below.
> Link: https://lore.kernel.org/all/20231102101642.52988-1-chen...@kylinos.cn
Best regards,
Krzysztof
Re: [Intel-gfx] [Freedreno] [PATCH RFC v1 00/52] drm/crtc: Rename struct drm_crtc::dev to drm_dev
On 12/07/2023 20:31, Sean Paul wrote: >>> 216 struct drm_device *ddev >>> 234 struct drm_device *drm_dev >>> 611 struct drm_device *drm >>>4190 struct drm_device *dev >>> >>> This series starts with renaming struct drm_crtc::dev to drm_dev. If >>> it's not only me and others like the result of this effort it should be >>> followed up by adapting the other structs and the individual usages in >>> the different drivers. >> >> I think this is an unnecessary change. In drm, a dev is usually a drm >> device, i.e. struct drm_device *. As shown by the numbers above. >> > > I'd really prefer this patch (series or single) is not accepted. This > will cause problems for everyone cherry-picking patches to a > downstream kernel (LTS or distro tree). I usually wouldn't expect > sympathy here, but the questionable benefit does not outweigh the cost > IM[biased]O. You know, every code cleanup and style adjustment is interfering with backporting. The only argument for a fast-pacing kernel should be whether the developers of this code find it more readable with such cleanup. Best regards, Krzysztof
[Intel-gfx] [RESEND PATCH] drm/i915: constify pointers to hwmon_channel_info
Statically allocated array of pointers to hwmon_channel_info can be made
const for safety.
Acked-by: Jani Nikula
Signed-off-by: Krzysztof Kozlowski
---
drivers/gpu/drm/i915/i915_hwmon.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_hwmon.c
b/drivers/gpu/drm/i915/i915_hwmon.c
index 8e7dccc8d3a0..e99e8c97ef01 100644
--- a/drivers/gpu/drm/i915/i915_hwmon.c
+++ b/drivers/gpu/drm/i915/i915_hwmon.c
@@ -267,7 +267,7 @@ static const struct attribute_group *hwm_groups[] = {
NULL
};
-static const struct hwmon_channel_info *hwm_info[] = {
+static const struct hwmon_channel_info * const hwm_info[] = {
HWMON_CHANNEL_INFO(in, HWMON_I_INPUT),
HWMON_CHANNEL_INFO(power, HWMON_P_MAX | HWMON_P_RATED_MAX |
HWMON_P_CRIT),
HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT),
@@ -275,7 +275,7 @@ static const struct hwmon_channel_info *hwm_info[] = {
NULL
};
-static const struct hwmon_channel_info *hwm_gt_info[] = {
+static const struct hwmon_channel_info * const hwm_gt_info[] = {
HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT),
NULL
};
--
2.34.1
[Intel-gfx] [PATCH v3] drm/i915: Fix Kconfig indentation
Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^/\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski --- Changes since v2: 1. Split AMD and i915 to separate patches. --- drivers/gpu/drm/i915/Kconfig | 12 +-- drivers/gpu/drm/i915/Kconfig.debug | 144 ++--- 2 files changed, 78 insertions(+), 78 deletions(-) diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 0d21402945ab..3c6d57df262d 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -76,7 +76,7 @@ config DRM_I915_CAPTURE_ERROR This option enables capturing the GPU state when a hang is detected. This information is vital for triaging hangs and assists in debugging. Please report any hang to -https://bugs.freedesktop.org/enter_bug.cgi?product=DRI + https://bugs.freedesktop.org/enter_bug.cgi?product=DRI for triaging. If in doubt, say "Y". @@ -105,11 +105,11 @@ config DRM_I915_USERPTR If in doubt, say "Y". config DRM_I915_GVT -bool "Enable Intel GVT-g graphics virtualization host support" -depends on DRM_I915 -depends on 64BIT -default n -help + bool "Enable Intel GVT-g graphics virtualization host support" + depends on DRM_I915 + depends on 64BIT + default n + help Choose this option if you want to enable Intel GVT-g graphics virtualization technology host support with integrated graphics. With GVT-g, it's possible to have one integrated graphics diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug index 00786a142ff0..eea79125b3ea 100644 --- a/drivers/gpu/drm/i915/Kconfig.debug +++ b/drivers/gpu/drm/i915/Kconfig.debug @@ -1,34 +1,34 @@ # SPDX-License-Identifier: GPL-2.0-only config DRM_I915_WERROR -bool "Force GCC to throw an error instead of a warning when compiling" -# As this may inadvertently break the build, only allow the user -# to shoot oneself in the foot iff they aim really hard -depends on EXPERT -# We use the dependency on !COMPILE_TEST to not be enabled in -# allmodconfig or allyesconfig configurations -depends on !COMPILE_TEST + bool "Force GCC to throw an error instead of a warning when compiling" + # As this may inadvertently break the build, only allow the user + # to shoot oneself in the foot iff they aim really hard + depends on EXPERT + # We use the dependency on !COMPILE_TEST to not be enabled in + # allmodconfig or allyesconfig configurations + depends on !COMPILE_TEST select HEADER_TEST -default n -help - Add -Werror to the build flags for (and only for) i915.ko. - Do not enable this unless you are writing code for the i915.ko module. + default n + help + Add -Werror to the build flags for (and only for) i915.ko. + Do not enable this unless you are writing code for the i915.ko module. - Recommended for driver developers only. + Recommended for driver developers only. - If in doubt, say "N". + If in doubt, say "N". config DRM_I915_DEBUG -bool "Enable additional driver debugging" -depends on DRM_I915 -select DEBUG_FS -select PREEMPT_COUNT -select REFCOUNT_FULL -select I2C_CHARDEV -select STACKDEPOT -select DRM_DP_AUX_CHARDEV -select X86_MSR # used by igt/pm_rpm -select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) -select DRM_DEBUG_MM if DRM=y + bool "Enable additional driver debugging" + depends on DRM_I915 + select DEBUG_FS + select PREEMPT_COUNT + select REFCOUNT_FULL + select I2C_CHARDEV + select STACKDEPOT + select DRM_DP_AUX_CHARDEV + select X86_MSR # used by igt/pm_rpm + select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) + select DRM_DEBUG_MM if DRM=y select DRM_DEBUG_SELFTEST select DMABUF_SELFTESTS select SW_SYNC # signaling validation framework (igt/syncobj*) @@ -36,14 +36,14 @@ config DRM_I915_DEBUG select DRM_I915_SELFTEST select DRM_I915_DEBUG_RUNTIME_PM select DRM_I915_DEBUG_MMIO -default n -help - Choose this option to turn on extra driver debugging that may affect - performance but will catch some internal issues. + default n + help + Choose this option to turn on extra driver debugging that may affect + performance but will catch some internal issues. - Recommended for driver developers only. + Recommended for
Re: [Intel-gfx] [PATCH TRIVIAL v2] gpu: Fix Kconfig indentation
On Mon, 7 Oct 2019 at 18:09, Alex Deucher wrote: > > On Mon, Oct 7, 2019 at 7:39 AM Jani Nikula > wrote: > > > > On Fri, 04 Oct 2019, Krzysztof Kozlowski wrote: > > > drivers/gpu/drm/i915/Kconfig | 12 +- > > > drivers/gpu/drm/i915/Kconfig.debug | 144 +++ > > > > Please split these out to a separate patch. Can't speak for others, but > > the patch looks like it'll be conflicts galore and a problem to manage > > if merged in one big lump. > > Yes, it would be nice to have the amd patch separate as well. I'll split the AMD and i915 although I am not sure if it is sense to split such trivial patch per each driver. Best regards, Krzysztof ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
[Intel-gfx] [PATCH TRIVIAL v2] gpu: Fix Kconfig indentation
Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^/\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski --- Changes since v1: 1. Fix also DRM_AMD_DC_HDCP (new arrival since v1). --- drivers/gpu/drm/Kconfig | 10 +- drivers/gpu/drm/amd/display/Kconfig | 32 ++--- drivers/gpu/drm/bridge/Kconfig | 8 +- drivers/gpu/drm/i915/Kconfig | 12 +- drivers/gpu/drm/i915/Kconfig.debug | 144 +++ drivers/gpu/drm/lima/Kconfig | 2 +- drivers/gpu/drm/mgag200/Kconfig | 8 +- drivers/gpu/drm/nouveau/Kconfig | 2 +- drivers/gpu/drm/omapdrm/displays/Kconfig | 6 +- drivers/gpu/drm/omapdrm/dss/Kconfig | 12 +- drivers/gpu/drm/rockchip/Kconfig | 8 +- drivers/gpu/drm/udl/Kconfig | 2 +- drivers/gpu/vga/Kconfig | 2 +- 13 files changed, 124 insertions(+), 124 deletions(-) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e67c194c2aca..7cb6e4eb99e8 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -207,8 +207,8 @@ config DRM_RADEON tristate "ATI Radeon" depends on DRM && PCI && MMU select FW_LOADER -select DRM_KMS_HELPER -select DRM_TTM + select DRM_KMS_HELPER + select DRM_TTM select POWER_SUPPLY select HWMON select BACKLIGHT_CLASS_DEVICE @@ -226,9 +226,9 @@ config DRM_AMDGPU tristate "AMD GPU" depends on DRM && PCI && MMU select FW_LOADER -select DRM_KMS_HELPER + select DRM_KMS_HELPER select DRM_SCHED -select DRM_TTM + select DRM_TTM select POWER_SUPPLY select HWMON select BACKLIGHT_CLASS_DEVICE @@ -266,7 +266,7 @@ config DRM_VKMS If M is selected the module will be called vkms. config DRM_ATI_PCIGART -bool + bool source "drivers/gpu/drm/exynos/Kconfig" diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig index 1bbe762ee6ba..313183b80032 100644 --- a/drivers/gpu/drm/amd/display/Kconfig +++ b/drivers/gpu/drm/amd/display/Kconfig @@ -23,16 +23,16 @@ config DRM_AMD_DC_DCN2_0 depends on DRM_AMD_DC && X86 depends on DRM_AMD_DC_DCN1_0 help - Choose this option if you want to have - Navi support for display engine + Choose this option if you want to have + Navi support for display engine config DRM_AMD_DC_DCN2_1 -bool "DCN 2.1 family" -depends on DRM_AMD_DC && X86 -depends on DRM_AMD_DC_DCN2_0 -help -Choose this option if you want to have -Renoir support for display engine + bool "DCN 2.1 family" + depends on DRM_AMD_DC && X86 + depends on DRM_AMD_DC_DCN2_0 + help + Choose this option if you want to have + Renoir support for display engine config DRM_AMD_DC_DSC_SUPPORT bool "DSC support" @@ -41,16 +41,16 @@ config DRM_AMD_DC_DSC_SUPPORT depends on DRM_AMD_DC_DCN1_0 depends on DRM_AMD_DC_DCN2_0 help - Choose this option if you want to have - Dynamic Stream Compression support + Choose this option if you want to have + Dynamic Stream Compression support config DRM_AMD_DC_HDCP -bool "Enable HDCP support in DC" -depends on DRM_AMD_DC -help - Choose this option - if you want to support - HDCP authentication + bool "Enable HDCP support in DC" + depends on DRM_AMD_DC + help +Choose this option +if you want to support +HDCP authentication config DEBUG_KERNEL_DC bool "Enable kgdb break in DC" diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 1cc9f502c1f2..a5aa7ec16000 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -60,10 +60,10 @@ config DRM_MEGACHIPS_STDP_GE_B850V3_FW select DRM_KMS_HELPER select DRM_PANEL ---help--- - This is a driver for the display bridges of - GE B850v3 that convert dual channel LVDS - to DP++. This is used with the i.MX6 imx-ldb - driver. You are likely to say N here. + This is a driver for the display bridges of + GE B850v3 that convert dual channel LVDS + to DP++. This is used with the i.MX6 imx-ldb + driver. You are likely to say N here. config DRM_NXP_PTN3460 tristate "NXP PTN3460 DP/LVDS bridge" diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 0d21402945ab..3c6d57df262d 100644 --- a/drivers/gpu/drm/i915/Kconfig +++
[Intel-gfx] [PATCH trivial] gpu: Fix Kconfig indentation
Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^/\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski --- drivers/gpu/drm/Kconfig | 10 +- drivers/gpu/drm/amd/display/Kconfig | 20 ++-- drivers/gpu/drm/bridge/Kconfig | 8 +- drivers/gpu/drm/i915/Kconfig | 12 +- drivers/gpu/drm/i915/Kconfig.debug | 144 +++ drivers/gpu/drm/lima/Kconfig | 2 +- drivers/gpu/drm/mgag200/Kconfig | 8 +- drivers/gpu/drm/nouveau/Kconfig | 2 +- drivers/gpu/drm/omapdrm/displays/Kconfig | 6 +- drivers/gpu/drm/omapdrm/dss/Kconfig | 12 +- drivers/gpu/drm/rockchip/Kconfig | 8 +- drivers/gpu/drm/udl/Kconfig | 2 +- drivers/gpu/vga/Kconfig | 2 +- 13 files changed, 118 insertions(+), 118 deletions(-) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e67c194c2aca..7cb6e4eb99e8 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -207,8 +207,8 @@ config DRM_RADEON tristate "ATI Radeon" depends on DRM && PCI && MMU select FW_LOADER -select DRM_KMS_HELPER -select DRM_TTM + select DRM_KMS_HELPER + select DRM_TTM select POWER_SUPPLY select HWMON select BACKLIGHT_CLASS_DEVICE @@ -226,9 +226,9 @@ config DRM_AMDGPU tristate "AMD GPU" depends on DRM && PCI && MMU select FW_LOADER -select DRM_KMS_HELPER + select DRM_KMS_HELPER select DRM_SCHED -select DRM_TTM + select DRM_TTM select POWER_SUPPLY select HWMON select BACKLIGHT_CLASS_DEVICE @@ -266,7 +266,7 @@ config DRM_VKMS If M is selected the module will be called vkms. config DRM_ATI_PCIGART -bool + bool source "drivers/gpu/drm/exynos/Kconfig" diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig index 71991a28a775..0a35cb8e803a 100644 --- a/drivers/gpu/drm/amd/display/Kconfig +++ b/drivers/gpu/drm/amd/display/Kconfig @@ -23,16 +23,16 @@ config DRM_AMD_DC_DCN2_0 depends on DRM_AMD_DC && X86 depends on DRM_AMD_DC_DCN1_0 help - Choose this option if you want to have - Navi support for display engine + Choose this option if you want to have + Navi support for display engine config DRM_AMD_DC_DCN2_1 -bool "DCN 2.1 family" -depends on DRM_AMD_DC && X86 -depends on DRM_AMD_DC_DCN2_0 -help -Choose this option if you want to have -Renoir support for display engine + bool "DCN 2.1 family" + depends on DRM_AMD_DC && X86 + depends on DRM_AMD_DC_DCN2_0 + help + Choose this option if you want to have + Renoir support for display engine config DRM_AMD_DC_DSC_SUPPORT bool "DSC support" @@ -41,8 +41,8 @@ config DRM_AMD_DC_DSC_SUPPORT depends on DRM_AMD_DC_DCN1_0 depends on DRM_AMD_DC_DCN2_0 help - Choose this option if you want to have - Dynamic Stream Compression support + Choose this option if you want to have + Dynamic Stream Compression support config DEBUG_KERNEL_DC bool "Enable kgdb break in DC" diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 1cc9f502c1f2..a5aa7ec16000 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -60,10 +60,10 @@ config DRM_MEGACHIPS_STDP_GE_B850V3_FW select DRM_KMS_HELPER select DRM_PANEL ---help--- - This is a driver for the display bridges of - GE B850v3 that convert dual channel LVDS - to DP++. This is used with the i.MX6 imx-ldb - driver. You are likely to say N here. + This is a driver for the display bridges of + GE B850v3 that convert dual channel LVDS + to DP++. This is used with the i.MX6 imx-ldb + driver. You are likely to say N here. config DRM_NXP_PTN3460 tristate "NXP PTN3460 DP/LVDS bridge" diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index 0d21402945ab..3c6d57df262d 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -76,7 +76,7 @@ config DRM_I915_CAPTURE_ERROR This option enables capturing the GPU state when a hang is detected. This information is vital for triaging hangs and assists in debugging. Please report any hang to -https://bugs.freedesktop.org/enter_bug.cgi?product=DRI + https://bugs.freedesktop.org/enter_bug.cgi?product=DRI for triaging. If in doubt, say "Y". @@ -105,11 +105,1
Re: [Intel-gfx] [PATCH v5 16/24] ARM: explicitly apply PWM config extracted from pwm_args
On 04/14/2016 09:17 PM, Boris Brezillon wrote: > Call pwm_apply_args() just after requesting the PWM device so that the > polarity and period are initialized according to the information provided > in pwm_args. > > This is an intermediate state, and pwm_apply_args() should be dropped as > soon as the atomic PWM infrastructure is in place and the driver makes > use of it. > > Signed-off-by: Boris Brezillon <boris.brezil...@free-electrons.com> > --- > arch/arm/mach-s3c24xx/mach-rx1950.c | 6 ++ > 1 file changed, 6 insertions(+) > Acked-by: Krzysztof Kozlowski <k.kozlow...@samsung.com> Best regards, Krzysztof ___ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
