From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Shanker Donthineni <shankerd@codeaurora.org>,
Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 4.15 41/64] arm64: cpufeature: Fix CTR_EL0 field definitions
Date: Mon, 26 Feb 2018 21:22:18 +0100 [thread overview]
Message-ID: <20180226202155.197126619@linuxfoundation.org> (raw)
In-Reply-To: <20180226202153.453363333@linuxfoundation.org>
4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Will Deacon <will.deacon@arm.com>
commit be68a8aaf925aaf35574260bf820bb09d2f9e07f upstream.
Our field definitions for CTR_EL0 suffer from a number of problems:
- The IDC and DIC fields are missing, which causes us to enable CTR
trapping on CPUs with either of these returning non-zero values.
- The ERG is FTR_LOWER_SAFE, whereas it should be treated like CWG as
FTR_HIGHER_SAFE so that applications can use it to avoid false sharing.
- [nit] A RES1 field is described as "RAO"
This patch updates the CTR_EL0 field definitions to fix these issues.
Cc: <stable@vger.kernel.org>
Cc: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/kernel/cpufeature.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -197,9 +197,11 @@ static const struct arm64_ftr_bits ftr_i
};
static const struct arm64_ftr_bits ftr_ctr[] = {
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, 31, 1, 1), /* RAO */
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_EXACT, 31, 1, 1), /* RES1 */
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 29, 1, 1), /* DIC */
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 28, 1, 1), /* IDC */
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_HIGHER_SAFE, 24, 4, 0), /* CWG */
- ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0), /* ERG */
+ ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_HIGHER_SAFE, 20, 4, 0), /* ERG */
ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 1), /* DminLine */
/*
* Linux can handle differing I-cache policies. Userspace JITs will
next prev parent reply other threads:[~2018-02-26 20:35 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-26 20:21 [PATCH 4.15 00/64] 4.15.7-stable review Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 01/64] netfilter: drop outermost socket lock in getsockopt() Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 02/64] arm64: mm: dont write garbage into TTBR1_EL1 register Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 03/64] kconfig.h: Include compiler types to avoid missed struct attributes Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 04/64] MIPS: boot: Define __ASSEMBLY__ for its.S build Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 05/64] xtensa: fix high memory/reserved memory collision Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 06/64] scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 07/64] MIPS: Drop spurious __unused in struct compat_flock Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 08/64] cfg80211: fix cfg80211_beacon_dup Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 09/64] i2c: designware: must wait for enable Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 10/64] i2c: bcm2835: Set up the rising/falling edge delays Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 11/64] X.509: fix BUG_ON() when hash algorithm is unsupported Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 12/64] X.509: fix NULL dereference when restricting key with unsupported_sig Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 13/64] PKCS#7: fix certificate chain verification Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 14/64] PKCS#7: fix certificate blacklisting Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 15/64] extcon: int3496: process id-pin first so that we start with the right status Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 16/64] genirq/matrix: Handle CPU offlining proper Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 17/64] RDMA/uverbs: Protect from races between lookup and destroy of uobjects Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 18/64] RDMA/uverbs: Protect from command mask overflow Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 19/64] RDMA/uverbs: Fix bad unlock balance in ib_uverbs_close_xrcd Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 20/64] RDMA/uverbs: Fix circular locking dependency Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 21/64] RDMA/uverbs: Sanitize user entered port numbers prior to access it Greg Kroah-Hartman
2018-02-26 20:21 ` [PATCH 4.15 22/64] iio: adc: stm32: fix stm32h7_adc_enable error handling Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 23/64] iio: srf08: fix link error "devm_iio_triggered_buffer_setup" undefined Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 24/64] iio: buffer: check if a buffer has been set up when poll is called Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 25/64] iio: adis_lib: Initialize trigger before requesting interrupt Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 26/64] Kbuild: always define endianess in kconfig.h Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 27/64] x86/apic/vector: Handle vector release on CPU unplug correctly Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 28/64] x86/oprofile: Fix bogus GCC-8 warning in nmi_setup() Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 29/64] mm, swap, frontswap: fix THP swap if frontswap enabled Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 30/64] mm: dont defer struct page initialization for Xen pv guests Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 31/64] uapi/if_ether.h: move __UAPI_DEF_ETHHDR libc define Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 32/64] irqchip/gic-v3: Use wmb() instead of smb_wmb() in gic_raise_softirq() Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 33/64] irqchip/mips-gic: Avoid spuriously handling masked interrupts Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 34/64] PCI/cxgb4: Extend T3 PCI quirk to T4+ devices Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 35/64] net: thunderbolt: Tear down connection properly on suspend Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 36/64] net: thunderbolt: Run disconnect flow asynchronously when logout is received Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 37/64] ohci-hcd: Fix race condition caused by ohci_urb_enqueue() and io_watchdog_func() Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 38/64] usb: ohci: Proper handling of ed_rm_list to handle race condition between usb_kill_urb() and finish_unlinks() Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 39/64] arm64: Remove unimplemented syscall log message Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 40/64] arm64: Disable unhandled signal log messages by default Greg Kroah-Hartman
2018-02-26 20:22 ` Greg Kroah-Hartman [this message]
2018-02-26 20:22 ` [PATCH 4.15 42/64] Add delay-init quirk for Corsair K70 RGB keyboards Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 43/64] drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 44/64] usb: host: ehci: use correct device pointer for dma ops Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 45/64] usb: dwc3: gadget: Set maxpacket size for ep0 IN Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 46/64] usb: dwc3: ep0: Reset TRB counter " Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 47/64] usb: phy: mxs: Fix NULL pointer dereference on i.MX23/28 Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 48/64] usb: ldusb: add PIDs for new CASSY devices supported by this driver Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 49/64] Revert "usb: musb: host: dont start next rx urb if current one failed" Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 50/64] usb: gadget: f_fs: Process all descriptors during bind Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 51/64] usb: gadget: f_fs: Use config_ep_by_speed() Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 52/64] usb: renesas_usbhs: missed the "running" flag in usb_dmac with rx path Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 53/64] drm/cirrus: Load lut in crtc_commit Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 54/64] drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 55/64] drm: Handle unexpected holes in color-eviction Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 56/64] drm/amdgpu: disable MMHUB power gating on raven Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 57/64] drm/amdgpu: fix VA hole handling on Vega10 v3 Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 58/64] drm/amdgpu: Add dpm quirk for Jet PRO (v2) Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 59/64] drm/amdgpu: only check mmBIF_IOV_FUNC_IDENTIFIER on tonga/fiji Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 60/64] drm/amdgpu: add atpx quirk handling (v2) Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 61/64] drm/amdgpu: Avoid leaking PM domain on driver unbind (v2) Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 62/64] drm/amdgpu: add new device to use atpx quirk Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 63/64] arm64: __show_regs: Only resolve kernel symbols when running at EL1 Greg Kroah-Hartman
2018-02-26 20:22 ` [PATCH 4.15 64/64] drm/i915/breadcrumbs: Ignore unsubmitted signalers Greg Kroah-Hartman
2018-02-27 0:58 ` [PATCH 4.15 00/64] 4.15.7-stable review Shuah Khan
2018-02-27 13:09 ` Greg Kroah-Hartman
2018-02-27 7:07 ` Naresh Kamboju
2018-02-27 13:09 ` Greg Kroah-Hartman
2018-02-27 7:18 ` kernelci.org bot
2018-02-27 14:58 ` Guenter Roeck
2018-02-27 18:37 ` Greg Kroah-Hartman
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