From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Helge Deller <deller@gmx.de>,
John David Anglin <dave.anglin@bell.net>,
Sasha Levin <sashal@kernel.org>,
James.Bottomley@HansenPartnership.com, svens@stackframe.org,
linux-parisc@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 17/43] parisc: Provide an extru_safe() macro to extract unsigned bits
Date: Tue, 30 Nov 2021 09:49:54 -0500 [thread overview]
Message-ID: <20211130145022.945517-17-sashal@kernel.org> (raw)
In-Reply-To: <20211130145022.945517-1-sashal@kernel.org>
From: Helge Deller <deller@gmx.de>
[ Upstream commit 169d1a4a2adb2c246396c56aa2f9eec3868546f1 ]
The extru instruction leaves the most significant 32 bits of the
target register in an undefined state on PA 2.0 systems.
Provide a macro to safely use extru on 32- and 64-bit machines.
Suggested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/parisc/include/asm/assembly.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h
index a39250cb7dfcf..0c95030017e8f 100644
--- a/arch/parisc/include/asm/assembly.h
+++ b/arch/parisc/include/asm/assembly.h
@@ -135,6 +135,17 @@
extrd,u \r, 63-(\sa), 64-(\sa), \t
.endm
+ /* Extract unsigned for 32- and 64-bit
+ * The extru instruction leaves the most significant 32 bits of the
+ * target register in an undefined state on PA 2.0 systems. */
+ .macro extru_safe r, p, len, t
+#ifdef CONFIG_64BIT
+ extrd,u \r, 32+(\p), \len, \t
+#else
+ extru \r, \p, \len, \t
+#endif
+ .endm
+
/* load 32-bit 'value' into 'reg' compensating for the ldil
* sign-extension when running in wide mode.
* WARNING!! neither 'value' nor 'reg' can be expressions
--
2.33.0
next prev parent reply other threads:[~2021-11-30 15:13 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 14:49 [PATCH AUTOSEL 5.10 01/43] ASoC: mediatek: mt8173-rt5650: Rename Speaker control to Ext Spk Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 02/43] ASoC: Intel: sof_sdw: Add support for SKU 0AF3 product Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 03/43] ASoC: Intel: sof_sdw: Add support for SKU 0B00 and 0B01 products Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 04/43] ASoC: Intel: sof_sdw: Add support for SKU 0B11 product Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 05/43] ASoC: Intel: sof_sdw: Add support for SKU 0B13 product Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 06/43] ASoC: Intel: sof_sdw: Add support for SKU 0B29 product Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 07/43] ASoC: Intel: sof_sdw: Add support for SKU 0B12 product Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 08/43] ASoC: mediatek: mt8173: Fix debugfs registration for components Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 09/43] ASoC: qdsp6: q6adm: improve error reporting Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 10/43] ASoC: qdsp6: q6routing: validate port id before setting up route Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 11/43] xen/privcmd: make option visible in Kconfig Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 12/43] NFSv4.1: handle NFS4ERR_NOSPC by CREATE_SESSION Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 13/43] scsi: scsi_debug: Fix type in min_t to avoid stack OOB Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 14/43] atlantic: fix double-free in aq_ring_tx_clean Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 15/43] stmmac_pci: Fix underflow size in stmmac_rx Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 16/43] HID: multitouch: Fix Iiyama ProLite T1931SAW (0eef:0001 again!) Sasha Levin
2021-11-30 14:49 ` Sasha Levin [this message]
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 18/43] parisc: Fix extraction of hash lock bits in syscall.S Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 19/43] parisc: Convert PTE lookup to use extru_safe() macro Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 20/43] selftests/tc-testings: Be compatible with newer tc output Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 21/43] scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() Sasha Levin
2021-11-30 14:49 ` [PATCH AUTOSEL 5.10 22/43] locking/rwsem: Optimize down_read_trylock() under highly contended case Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 23/43] i2c: i801: Fix interrupt storm from SMB_ALERT signal Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 24/43] mmc: spi: Add device-tree SPI IDs Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 25/43] net: chelsio: cxgb4vf: Fix an error code in cxgb4vf_pci_probe() Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 26/43] smb2: clarify rc initialization in smb2_reconnect Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 27/43] nvmet-tcp: fix a race condition between release_queue and io_work Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 28/43] nvmet-tcp: add an helper to free the cmd buffers Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 29/43] nvmet-tcp: fix memory leak when performing a controller reset Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 30/43] nvme-tcp: validate R2T PDU in nvme_tcp_handle_r2t() Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 31/43] nvme-tcp: fix memory leak when freeing a queue Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 32/43] nvme-pci: add NO APST quirk for Kioxia device Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 33/43] nvme: fix write zeroes pi Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 34/43] xen: add "not_essential" flag to struct xenbus_driver Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 35/43] xen: flag xen_drm_front to be not essential for system boot Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 36/43] xen: flag hvc_xen " Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 37/43] xen: flag pvcalls-front " Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 38/43] xen: flag xen_snd_front " Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 39/43] PM: hibernate: Fix snapshot partial write lengths Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 40/43] vhost-vdpa: clean irqs before reseting vdpa device Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 41/43] net: qed: fix the array may be out of bound Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 42/43] net: ptp: add a definition for the UDP port for IEEE 1588 general messages Sasha Levin
2021-11-30 14:50 ` [PATCH AUTOSEL 5.10 43/43] fs: ntfs: Limit NTFS_RW to page sizes smaller than 64k Sasha Levin
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