From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Sedat Dilek <sedat.dilek@gmail.com>,
Sami Tolvanen <samitolvanen@google.com>,
Nick Desaulniers <ndesaulniers@google.com>,
Alex Deucher <alexander.deucher@amd.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.2 10/45] drm/amd/display: readd -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines
Date: Sun, 29 Sep 2019 15:55:38 +0200 [thread overview]
Message-ID: <20190929135027.732791582@linuxfoundation.org> (raw)
In-Reply-To: <20190929135024.387033930@linuxfoundation.org>
From: Nick Desaulniers <ndesaulniers@google.com>
[ Upstream commit 0f0727d971f6fdf8f1077180d495ddb9928f0c8b ]
arch/x86/Makefile disables SSE and SSE2 for the whole kernel. The
AMDGPU drivers modified in this patch re-enable SSE but not SSE2. Turn
on SSE2 to support emitting double precision floating point instructions
rather than calls to non-existent (usually available from gcc_s or
compiler_rt) floating point helper routines for Clang.
This was originally landed in:
commit 10117450735c ("drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines")
but reverted in:
commit 193392ed9f69 ("Revert "drm/amd/display: add -msse2 to prevent Clang from emitting libcalls to undefined SW FP routines"")
due to bugreports from GCC builds. Add guards to only do so for Clang.
Link: https://bugs.freedesktop.org/show_bug.cgi?id=109487
Link: https://github.com/ClangBuiltLinux/linux/issues/327
Suggested-by: Sedat Dilek <sedat.dilek@gmail.com>
Suggested-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/calcs/Makefile | 4 ++++
drivers/gpu/drm/amd/display/dc/dml/Makefile | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
index 95f332ee3e7e6..16614d73a5fcf 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
@@ -32,6 +32,10 @@ endif
calcs_ccflags := -mhard-float -msse $(cc_stack_align)
+ifdef CONFIG_CC_IS_CLANG
+calcs_ccflags += -msse2
+endif
+
CFLAGS_dcn_calcs.o := $(calcs_ccflags)
CFLAGS_dcn_calc_auto.o := $(calcs_ccflags)
CFLAGS_dcn_calc_math.o := $(calcs_ccflags) -Wno-tautological-compare
diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile
index d97ca6528f9d9..934ffe1b4b00e 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
+++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
@@ -32,6 +32,10 @@ endif
dml_ccflags := -mhard-float -msse $(cc_stack_align)
+ifdef CONFIG_CC_IS_CLANG
+dml_ccflags += -msse2
+endif
+
CFLAGS_display_mode_lib.o := $(dml_ccflags)
CFLAGS_display_pipe_clocks.o := $(dml_ccflags)
CFLAGS_dml1_display_rq_dlg_calc.o := $(dml_ccflags)
--
2.20.1
next prev parent reply other threads:[~2019-09-29 14:05 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-29 13:55 [PATCH 5.2 00/45] 5.2.18-stable review Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 01/45] Revert "Bluetooth: validate BLE connection interval updates" Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 02/45] smb3: fix unmount hang in open_shroot Greg Kroah-Hartman
2019-10-01 20:41 ` Pavel Shilovskiy
2019-10-01 22:49 ` Sasha Levin
2019-10-01 22:58 ` Pavel Shilovskiy
2019-09-29 13:55 ` [PATCH 5.2 03/45] phy: qcom-qmp: Raise qcom_qmp_phy_enable() polling delay Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 04/45] phy: qcom-qmp: Correct ready status, again Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 05/45] net/ibmvnic: free reset work of removed device from queue Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 06/45] drm/amd/display: Allow cursor async updates for framebuffer swaps Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 07/45] drm/amd/display: Skip determining update type for async updates Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 08/45] drm/amd/display: Dont replace the dc_state for fast updates Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 09/45] powerpc/xive: Fix bogus error code returned by OPAL Greg Kroah-Hartman
2019-09-29 13:55 ` Greg Kroah-Hartman [this message]
2019-09-29 13:55 ` [PATCH 5.2 11/45] Revert "net: hns: fix LED configuration for marvell phy" Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 12/45] HID: prodikeys: Fix general protection fault during probe Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 13/45] HID: sony: Fix memory corruption issue on cleanup Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 14/45] HID: logitech: Fix general protection fault caused by Logitech driver Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 15/45] HID: logitech-dj: Fix crash when initial logi_dj_recv_query_paired_devices fails Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 16/45] HID: hidraw: Fix invalid read in hidraw_ioctl Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 17/45] HID: Add quirk for HP X500 PIXART OEM mouse Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 18/45] mtd: cfi_cmdset_0002: Use chip_good() to retry in do_write_oneword() Greg Kroah-Hartman
2019-09-29 13:55 ` Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 19/45] crypto: talitos - fix missing break in switch statement Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 20/45] clk: imx: imx8mm: fix audio pll setting Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 21/45] Revert "HID: logitech-hidpp: add USB PID for a few more supported mice" Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 22/45] Revert "mm/z3fold.c: fix race between migration and destruction" Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 23/45] ALSA: usb-audio: Add Hiby device family to quirks for native DSD support Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 24/45] ALSA: usb-audio: Add DSD support for EVGA NU Audio Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 25/45] ALSA: dice: fix wrong packet parameter for Alesis iO26 Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 26/45] ALSA: hda - Add laptop imic fixup for ASUS M9V laptop Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 27/45] ALSA: hda - Apply AMD controller workaround for Raven platform Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 28/45] platform/x86: i2c-multi-instantiate: Derive the device name from parent Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 29/45] objtool: Clobber user CFLAGS variable Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 30/45] Revert "f2fs: avoid out-of-range memory access" Greg Kroah-Hartman
2019-09-29 13:55 ` [PATCH 5.2 31/45] dm zoned: fix invalid memory access Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 32/45] net/ibmvnic: Fix missing { in __ibmvnic_reset Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 33/45] f2fs: fix to do sanity check on segment bitmap of LFS curseg Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 34/45] drm: Flush output polling on shutdown Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 35/45] drm/dp: Add DP_DPCD_QUIRK_NO_SINK_COUNT Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 36/45] net: dont warn in inet diag when IPV6 is disabled Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 37/45] Bluetooth: btrtl: HCI reset on close for Realtek BT chip Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 38/45] ACPI: video: Add new hw_changes_brightness quirk, set it on PB Easynote MZ35 Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 39/45] drm/nouveau/disp/nv50-: fix center/aspect-corrected scaling Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 40/45] xfs: dont crash on null attr fork xfs_bmapi_read Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 41/45] xfrm: policy: avoid warning splat when merging nodes Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 42/45] netfilter: nft_socket: fix erroneous socket assignment Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 43/45] Bluetooth: btrtl: Additional Realtek 8822CE Bluetooth devices Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 44/45] net_sched: check cops->tcf_block in tc_bind_tclass() Greg Kroah-Hartman
2019-09-29 13:56 ` [PATCH 5.2 45/45] net/rds: An rds_sock is added too early to the hash table Greg Kroah-Hartman
2019-09-29 19:00 ` [PATCH 5.2 00/45] 5.2.18-stable review kernelci.org bot
2019-09-30 18:30 ` Guenter Roeck
2019-10-01 0:53 ` shuah
2019-10-01 1:10 ` Dan Rue
2019-10-01 14:58 ` Jon Hunter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190929135027.732791582@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=alexander.deucher@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=ndesaulniers@google.com \
--cc=samitolvanen@google.com \
--cc=sashal@kernel.org \
--cc=sedat.dilek@gmail.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.