This commit is contained in:
Jan Alexander Steffens 2018-06-12 19:12:42 +00:00
parent 70380956bc
commit cc4bd87336
4 changed files with 152 additions and 13 deletions

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@ -1,8 +1,8 @@
From b7e3d341f20581dcd72d3640fa8f6f99fd766d21 Mon Sep 17 00:00:00 2001
Message-Id: <b7e3d341f20581dcd72d3640fa8f6f99fd766d21.1528140572.git.jan.steffens@gmail.com>
From 9a5adbc45b1c7d43fe4b27936f2a6939660617a1 Mon Sep 17 00:00:00 2001
Message-Id: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com>
From: Serge Hallyn <serge.hallyn@canonical.com>
Date: Fri, 31 May 2013 19:12:12 +0100
Subject: [PATCH 1/2] add sysctl to disallow unprivileged CLONE_NEWUSER by
Subject: [PATCH 1/3] add sysctl to disallow unprivileged CLONE_NEWUSER by
default
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

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@ -1,10 +1,10 @@
From 997fbfe5508bc7d29fdf0a7a103f3864d4db380a Mon Sep 17 00:00:00 2001
Message-Id: <997fbfe5508bc7d29fdf0a7a103f3864d4db380a.1528140572.git.jan.steffens@gmail.com>
In-Reply-To: <b7e3d341f20581dcd72d3640fa8f6f99fd766d21.1528140572.git.jan.steffens@gmail.com>
References: <b7e3d341f20581dcd72d3640fa8f6f99fd766d21.1528140572.git.jan.steffens@gmail.com>
From 6cc33158e691a70111672a6105c7a37e66e6d3c3 Mon Sep 17 00:00:00 2001
Message-Id: <6cc33158e691a70111672a6105c7a37e66e6d3c3.1528777685.git.jan.steffens@gmail.com>
In-Reply-To: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com>
References: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com>
From: Jani Nikula <jani.nikula@intel.com>
Date: Wed, 16 May 2018 11:01:10 +0300
Subject: [PATCH 2/2] Revert "drm/i915/edp: Allow alternate fixed mode for eDP
Subject: [PATCH 2/3] Revert "drm/i915/edp: Allow alternate fixed mode for eDP
if available."
This reverts commit dc911f5bd8aacfcf8aabd5c26c88e04c837a938e.

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@ -0,0 +1,132 @@
From 1e45a10dbea00f3a9ead21a9b3d25ad00021261d Mon Sep 17 00:00:00 2001
Message-Id: <1e45a10dbea00f3a9ead21a9b3d25ad00021261d.1528777685.git.jan.steffens@gmail.com>
In-Reply-To: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com>
References: <9a5adbc45b1c7d43fe4b27936f2a6939660617a1.1528777685.git.jan.steffens@gmail.com>
From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue, 22 May 2018 14:16:50 +0300
Subject: [PATCH 3/3] ACPI / watchdog: Prefer iTCO_wdt always when WDAT table
uses RTC SRAM
After we added quirk for Lenovo Z50-70 it turns out there are at least
two more systems where WDAT table includes instructions accessing RTC
SRAM. Instead of quirking each system separately, look for such
instructions in the table and automatically prefer iTCO_wdt if found.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=199033
Reported-by: Arnold Guy <aurnoldg@gmail.com>
Reported-by: Alois Nespor <nespor@fssp.cz>
Reported-by: Yury Pakin <zxwarior@gmail.com>
Reported-by: Ihor Chyhin <ihorchyhin@ukr.net>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/acpi/acpi_watchdog.c | 72 ++++++++++++++++++++++--------------
1 file changed, 45 insertions(+), 27 deletions(-)
diff --git a/drivers/acpi/acpi_watchdog.c b/drivers/acpi/acpi_watchdog.c
index 4bde16fb97d8..95600309ce42 100644
--- a/drivers/acpi/acpi_watchdog.c
+++ b/drivers/acpi/acpi_watchdog.c
@@ -12,54 +12,72 @@
#define pr_fmt(fmt) "ACPI: watchdog: " fmt
#include <linux/acpi.h>
-#include <linux/dmi.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include "internal.h"
-static const struct dmi_system_id acpi_watchdog_skip[] = {
- {
- /*
- * On Lenovo Z50-70 there are two issues with the WDAT
- * table. First some of the instructions use RTC SRAM
- * to store persistent information. This does not work well
- * with Linux RTC driver. Second, more important thing is
- * that the instructions do not actually reset the system.
- *
- * On this particular system iTCO_wdt seems to work just
- * fine so we prefer that over WDAT for now.
- *
- * See also https://bugzilla.kernel.org/show_bug.cgi?id=199033.
- */
- .ident = "Lenovo Z50-70",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
- DMI_MATCH(DMI_PRODUCT_NAME, "20354"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo Z50-70"),
- },
- },
- {}
-};
+#ifdef CONFIG_RTC_MC146818_LIB
+#include <linux/mc146818rtc.h>
+
+/*
+ * There are several systems where the WDAT table is accessing RTC SRAM to
+ * store persistent information. This does not work well with the Linux RTC
+ * driver so on those systems we skip WDAT driver and prefer iTCO_wdt
+ * instead.
+ *
+ * See also https://bugzilla.kernel.org/show_bug.cgi?id=199033.
+ */
+static bool acpi_watchdog_uses_rtc(const struct acpi_table_wdat *wdat)
+{
+ const struct acpi_wdat_entry *entries;
+ int i;
+
+ entries = (struct acpi_wdat_entry *)(wdat + 1);
+ for (i = 0; i < wdat->entries; i++) {
+ const struct acpi_generic_address *gas;
+
+ gas = &entries[i].register_region;
+ if (gas->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
+ switch (gas->address) {
+ case RTC_PORT(0):
+ case RTC_PORT(1):
+ case RTC_PORT(2):
+ case RTC_PORT(3):
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+#else
+static bool acpi_watchdog_uses_rtc(const struct acpi_table_wdat *wdat)
+{
+ return false;
+}
+#endif
static const struct acpi_table_wdat *acpi_watchdog_get_wdat(void)
{
const struct acpi_table_wdat *wdat = NULL;
acpi_status status;
if (acpi_disabled)
return NULL;
- if (dmi_check_system(acpi_watchdog_skip))
- return NULL;
-
status = acpi_get_table(ACPI_SIG_WDAT, 0,
(struct acpi_table_header **)&wdat);
if (ACPI_FAILURE(status)) {
/* It is fine if there is no WDAT */
return NULL;
}
+ if (acpi_watchdog_uses_rtc(wdat)) {
+ pr_info("Skipping WDAT on this system because it uses RTC SRAM\n");
+ return NULL;
+ }
+
return wdat;
}
--
2.17.1

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@ -4,7 +4,7 @@
pkgbase=linux # Build stock -ARCH kernel
#pkgbase=linux-custom # Build kernel with a different name
_srcname=linux-4.17
pkgver=4.17
pkgver=4.17.1
pkgrel=1
arch=('x86_64')
url="https://www.kernel.org/"
@ -13,26 +13,30 @@ makedepends=('xmlto' 'kmod' 'inetutils' 'bc' 'libelf')
options=('!strip')
source=(
https://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.{xz,sign}
#https://www.kernel.org/pub/linux/kernel/v4.x/patch-${pkgver}.{xz,sign}
https://www.kernel.org/pub/linux/kernel/v4.x/patch-${pkgver}.{xz,sign}
config # the main kernel config file
60-linux.hook # pacman hook for depmod
90-linux.hook # pacman hook for initramfs regeneration
linux.preset # standard config files for mkinitcpio ramdisk
0001-add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by.patch
0002-Revert-drm-i915-edp-Allow-alternate-fixed-mode-for-e.patch
0003-ACPI-watchdog-Prefer-iTCO_wdt-always-when-WDAT-table.patch
)
validpgpkeys=(
'ABAF11C65A2970B130ABE3C479BE3E4300411886' # Linus Torvalds
'647F28654894E3BD457199BE38DBBDC86092693E' # Greg Kroah-Hartman
)
sha256sums=('9faa1dd896eaea961dc6e886697c0b3301277102e5bc976b2758f9a62d3ccd13'
'SKIP'
'31f2f5309d99db632160538d43cf737166ae8b24c1b8091522ca1f9a804c25a1'
'SKIP'
'0269d9a56f0d0306c9bd5c179a7e32214b0a1c082d3bca581661203b27305f17'
'ae2e95db94ef7176207c690224169594d49445e04249d2499e9d2fbc117a0b21'
'75f99f5239e03238f88d1a834c50043ec32b1dc568f2cc291b07d04718483919'
'ad6344badc91ad0630caacde83f7f9b97276f80d26a20619a87952be65492c65'
'0b77e6bef12735bc91e3f0e8232512e973688466f2e8a2c3a93502cb2d4b4eed'
'92615acad59cbef9fd43b2710f5a77ffea45a86543ccff1b12eb676a9c8058cc')
'e3c08f9b91611186e5ec579187ecea2a0143e5c2dc7ffc30ac6ea6e2b6d130fd'
'5403dead9161344b2c01027526146a250147680f4a2d32a54d40c55fc1becc8a'
'd55e7de60b12bca26ded4c1bb8eb5860a9092374914a201a0f6a0ed2849d099f')
_kernelname=${pkgbase#linux}
: ${_kernelname:=-ARCH}
@ -41,7 +45,7 @@ prepare() {
cd ${_srcname}
# add upstream patch
#patch -p1 -i ../patch-${pkgver}
patch -p1 -i ../patch-${pkgver}
# add latest fixes from stable queue, if needed
# http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git
@ -52,6 +56,9 @@ prepare() {
# https://bugs.archlinux.org/task/56711
patch -Np1 -i ../0002-Revert-drm-i915-edp-Allow-alternate-fixed-mode-for-e.patch
# https://bugs.archlinux.org/task/56780
patch -Np1 -i ../0003-ACPI-watchdog-Prefer-iTCO_wdt-always-when-WDAT-table.patch
cat ../config - >.config <<END
CONFIG_LOCALVERSION="${_kernelname}"
CONFIG_LOCALVERSION_AUTO=n