From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jiri Kosina <jkosina@suse.cz>,
Thomas Gleixner <tglx@linutronix.de>,
Josh Poimboeuf <jpoimboe@redhat.com>,
David Woodhouse <dwmw@amazon.co.uk>
Subject: [PATCH 4.9 078/107] x86/bugs, kvm: Introduce boot-time control of L1TF mitigations
Date: Tue, 14 Aug 2018 19:17:41 +0200 [thread overview]
Message-ID: <20180814171525.548934326@linuxfoundation.org> (raw)
In-Reply-To: <20180814171520.883143803@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiri Kosina <jkosina@suse.cz>
commit d90a7a0ec83fb86622cd7dae23255d3c50a99ec8 upstream
Introduce the 'l1tf=' kernel command line option to allow for boot-time
switching of mitigation that is used on processors affected by L1TF.
The possible values are:
full
Provides all available mitigations for the L1TF vulnerability. Disables
SMT and enables all mitigations in the hypervisors. SMT control via
/sys/devices/system/cpu/smt/control is still possible after boot.
Hypervisors will issue a warning when the first VM is started in
a potentially insecure configuration, i.e. SMT enabled or L1D flush
disabled.
full,force
Same as 'full', but disables SMT control. Implies the 'nosmt=force'
command line option. sysfs control of SMT and the hypervisor flush
control is disabled.
flush
Leaves SMT enabled and enables the conditional hypervisor mitigation.
Hypervisors will issue a warning when the first VM is started in a
potentially insecure configuration, i.e. SMT enabled or L1D flush
disabled.
flush,nosmt
Disables SMT and enables the conditional hypervisor mitigation. SMT
control via /sys/devices/system/cpu/smt/control is still possible
after boot. If SMT is reenabled or flushing disabled at runtime
hypervisors will issue a warning.
flush,nowarn
Same as 'flush', but hypervisors will not warn when
a VM is started in a potentially insecure configuration.
off
Disables hypervisor mitigations and doesn't emit any warnings.
Default is 'flush'.
Let KVM adhere to these semantics, which means:
- 'lt1f=full,force' : Performe L1D flushes. No runtime control
possible.
- 'l1tf=full'
- 'l1tf-flush'
- 'l1tf=flush,nosmt' : Perform L1D flushes and warn on VM start if
SMT has been runtime enabled or L1D flushing
has been run-time enabled
- 'l1tf=flush,nowarn' : Perform L1D flushes and no warnings are emitted.
- 'l1tf=off' : L1D flushes are not performed and no warnings
are emitted.
KVM can always override the L1D flushing behavior using its 'vmentry_l1d_flush'
module parameter except when lt1f=full,force is set.
This makes KVM's private 'nosmt' option redundant, and as it is a bit
non-systematic anyway (this is something to control globally, not on
hypervisor level), remove that option.
Add the missing Documentation entry for the l1tf vulnerability sysfs file
while at it.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lkml.kernel.org/r/20180713142323.202758176@linutronix.de
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/ABI/testing/sysfs-devices-system-cpu | 4 +
Documentation/kernel-parameters.txt | 68 +++++++++++++++++++--
arch/x86/include/asm/processor.h | 12 +++
arch/x86/kernel/cpu/bugs.c | 44 +++++++++++++
arch/x86/kvm/vmx.c | 56 +++++++++++++----
5 files changed, 165 insertions(+), 19 deletions(-)
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -356,6 +356,7 @@ What: /sys/devices/system/cpu/vulnerabi
/sys/devices/system/cpu/vulnerabilities/spectre_v1
/sys/devices/system/cpu/vulnerabilities/spectre_v2
/sys/devices/system/cpu/vulnerabilities/spec_store_bypass
+ /sys/devices/system/cpu/vulnerabilities/l1tf
Date: January 2018
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Information about CPU vulnerabilities
@@ -368,6 +369,9 @@ Description: Information about CPU vulne
"Vulnerable" CPU is affected and no mitigation in effect
"Mitigation: $M" CPU is affected and mitigation $M is in effect
+ Details about the l1tf file can be found in
+ Documentation/admin-guide/l1tf.rst
+
What: /sys/devices/system/cpu/smt
/sys/devices/system/cpu/smt/active
/sys/devices/system/cpu/smt/control
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1989,12 +1989,6 @@ bytes respectively. Such letter suffixes
for all guests.
Default is 1 (enabled) if in 64-bit or 32-bit PAE mode.
- kvm-intel.nosmt=[KVM,Intel] If the L1TF CPU bug is present (CVE-2018-3620)
- and the system has SMT (aka Hyper-Threading) enabled then
- don't allow guests to be created.
-
- Default is 0 (allow guests to be created).
-
kvm-intel.ept= [KVM,Intel] Disable extended page tables
(virtualized MMU) support on capable Intel chips.
Default is 1 (enabled)
@@ -2032,6 +2026,68 @@ bytes respectively. Such letter suffixes
feature (tagged TLBs) on capable Intel chips.
Default is 1 (enabled)
+ l1tf= [X86] Control mitigation of the L1TF vulnerability on
+ affected CPUs
+
+ The kernel PTE inversion protection is unconditionally
+ enabled and cannot be disabled.
+
+ full
+ Provides all available mitigations for the
+ L1TF vulnerability. Disables SMT and
+ enables all mitigations in the
+ hypervisors, i.e. unconditional L1D flush.
+
+ SMT control and L1D flush control via the
+ sysfs interface is still possible after
+ boot. Hypervisors will issue a warning
+ when the first VM is started in a
+ potentially insecure configuration,
+ i.e. SMT enabled or L1D flush disabled.
+
+ full,force
+ Same as 'full', but disables SMT and L1D
+ flush runtime control. Implies the
+ 'nosmt=force' command line option.
+ (i.e. sysfs control of SMT is disabled.)
+
+ flush
+ Leaves SMT enabled and enables the default
+ hypervisor mitigation, i.e. conditional
+ L1D flush.
+
+ SMT control and L1D flush control via the
+ sysfs interface is still possible after
+ boot. Hypervisors will issue a warning
+ when the first VM is started in a
+ potentially insecure configuration,
+ i.e. SMT enabled or L1D flush disabled.
+
+ flush,nosmt
+
+ Disables SMT and enables the default
+ hypervisor mitigation.
+
+ SMT control and L1D flush control via the
+ sysfs interface is still possible after
+ boot. Hypervisors will issue a warning
+ when the first VM is started in a
+ potentially insecure configuration,
+ i.e. SMT enabled or L1D flush disabled.
+
+ flush,nowarn
+ Same as 'flush', but hypervisors will not
+ warn when a VM is started in a potentially
+ insecure configuration.
+
+ off
+ Disables hypervisor mitigations and doesn't
+ emit any warnings.
+
+ Default is 'flush'.
+
+ For details see: Documentation/admin-guide/l1tf.rst
+
l2cr= [PPC]
l3cr= [PPC]
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -860,4 +860,16 @@ bool xen_set_default_idle(void);
void stop_this_cpu(void *dummy);
void df_debug(struct pt_regs *regs, long error_code);
+
+enum l1tf_mitigations {
+ L1TF_MITIGATION_OFF,
+ L1TF_MITIGATION_FLUSH_NOWARN,
+ L1TF_MITIGATION_FLUSH,
+ L1TF_MITIGATION_FLUSH_NOSMT,
+ L1TF_MITIGATION_FULL,
+ L1TF_MITIGATION_FULL_FORCE
+};
+
+extern enum l1tf_mitigations l1tf_mitigation;
+
#endif /* _ASM_X86_PROCESSOR_H */
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -643,7 +643,11 @@ void x86_spec_ctrl_setup_ap(void)
#undef pr_fmt
#define pr_fmt(fmt) "L1TF: " fmt
+/* Default mitigation for L1TF-affected CPUs */
+enum l1tf_mitigations l1tf_mitigation __ro_after_init = L1TF_MITIGATION_FLUSH;
#if IS_ENABLED(CONFIG_KVM_INTEL)
+EXPORT_SYMBOL_GPL(l1tf_mitigation);
+
enum vmx_l1d_flush_state l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
EXPORT_SYMBOL_GPL(l1tf_vmx_mitigation);
#endif
@@ -655,6 +659,20 @@ static void __init l1tf_select_mitigatio
if (!boot_cpu_has_bug(X86_BUG_L1TF))
return;
+ switch (l1tf_mitigation) {
+ case L1TF_MITIGATION_OFF:
+ case L1TF_MITIGATION_FLUSH_NOWARN:
+ case L1TF_MITIGATION_FLUSH:
+ break;
+ case L1TF_MITIGATION_FLUSH_NOSMT:
+ case L1TF_MITIGATION_FULL:
+ cpu_smt_disable(false);
+ break;
+ case L1TF_MITIGATION_FULL_FORCE:
+ cpu_smt_disable(true);
+ break;
+ }
+
#if CONFIG_PGTABLE_LEVELS == 2
pr_warn("Kernel not compiled for PAE. No mitigation for L1TF\n");
return;
@@ -673,6 +691,32 @@ static void __init l1tf_select_mitigatio
setup_force_cpu_cap(X86_FEATURE_L1TF_PTEINV);
}
+
+static int __init l1tf_cmdline(char *str)
+{
+ if (!boot_cpu_has_bug(X86_BUG_L1TF))
+ return 0;
+
+ if (!str)
+ return -EINVAL;
+
+ if (!strcmp(str, "off"))
+ l1tf_mitigation = L1TF_MITIGATION_OFF;
+ else if (!strcmp(str, "flush,nowarn"))
+ l1tf_mitigation = L1TF_MITIGATION_FLUSH_NOWARN;
+ else if (!strcmp(str, "flush"))
+ l1tf_mitigation = L1TF_MITIGATION_FLUSH;
+ else if (!strcmp(str, "flush,nosmt"))
+ l1tf_mitigation = L1TF_MITIGATION_FLUSH_NOSMT;
+ else if (!strcmp(str, "full"))
+ l1tf_mitigation = L1TF_MITIGATION_FULL;
+ else if (!strcmp(str, "full,force"))
+ l1tf_mitigation = L1TF_MITIGATION_FULL_FORCE;
+
+ return 0;
+}
+early_param("l1tf", l1tf_cmdline);
+
#undef pr_fmt
#ifdef CONFIG_SYSFS
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -69,9 +69,6 @@ static const struct x86_cpu_id vmx_cpu_i
};
MODULE_DEVICE_TABLE(x86cpu, vmx_cpu_id);
-static bool __read_mostly nosmt;
-module_param(nosmt, bool, S_IRUGO);
-
static bool __read_mostly enable_vpid = 1;
module_param_named(vpid, enable_vpid, bool, 0444);
@@ -216,15 +213,31 @@ static int vmx_setup_l1d_flush(enum vmx_
{
struct page *page;
- /* If set to 'auto' select 'cond' */
- if (l1tf == VMENTER_L1D_FLUSH_AUTO)
- l1tf = VMENTER_L1D_FLUSH_COND;
-
if (!enable_ept) {
l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_EPT_DISABLED;
return 0;
}
+ /* If set to auto use the default l1tf mitigation method */
+ if (l1tf == VMENTER_L1D_FLUSH_AUTO) {
+ switch (l1tf_mitigation) {
+ case L1TF_MITIGATION_OFF:
+ l1tf = VMENTER_L1D_FLUSH_NEVER;
+ break;
+ case L1TF_MITIGATION_FLUSH_NOWARN:
+ case L1TF_MITIGATION_FLUSH:
+ case L1TF_MITIGATION_FLUSH_NOSMT:
+ l1tf = VMENTER_L1D_FLUSH_COND;
+ break;
+ case L1TF_MITIGATION_FULL:
+ case L1TF_MITIGATION_FULL_FORCE:
+ l1tf = VMENTER_L1D_FLUSH_ALWAYS;
+ break;
+ }
+ } else if (l1tf_mitigation == L1TF_MITIGATION_FULL_FORCE) {
+ l1tf = VMENTER_L1D_FLUSH_ALWAYS;
+ }
+
if (l1tf != VMENTER_L1D_FLUSH_NEVER && !vmx_l1d_flush_pages &&
!boot_cpu_has(X86_FEATURE_FLUSH_L1D)) {
page = alloc_pages(GFP_KERNEL, L1D_CACHE_ORDER);
@@ -9500,16 +9513,33 @@ free_vcpu:
return ERR_PTR(err);
}
-#define L1TF_MSG "SMT enabled with L1TF CPU bug present. Refer to CVE-2018-3620 for details.\n"
+#define L1TF_MSG_SMT "L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
+#define L1TF_MSG_L1D "L1TF CPU bug present and virtualization mitigation disabled, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details.\n"
static int vmx_vm_init(struct kvm *kvm)
{
- if (boot_cpu_has(X86_BUG_L1TF) && cpu_smt_control == CPU_SMT_ENABLED) {
- if (nosmt) {
- pr_err(L1TF_MSG);
- return -EOPNOTSUPP;
+ if (boot_cpu_has(X86_BUG_L1TF) && enable_ept) {
+ switch (l1tf_mitigation) {
+ case L1TF_MITIGATION_OFF:
+ case L1TF_MITIGATION_FLUSH_NOWARN:
+ /* 'I explicitly don't care' is set */
+ break;
+ case L1TF_MITIGATION_FLUSH:
+ case L1TF_MITIGATION_FLUSH_NOSMT:
+ case L1TF_MITIGATION_FULL:
+ /*
+ * Warn upon starting the first VM in a potentially
+ * insecure environment.
+ */
+ if (cpu_smt_control == CPU_SMT_ENABLED)
+ pr_warn_once(L1TF_MSG_SMT);
+ if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_NEVER)
+ pr_warn_once(L1TF_MSG_L1D);
+ break;
+ case L1TF_MITIGATION_FULL_FORCE:
+ /* Flush is enforced */
+ break;
}
- pr_warn(L1TF_MSG);
}
return 0;
}
next prev parent reply other threads:[~2018-08-14 17:43 UTC|newest]
Thread overview: 129+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-14 17:16 [PATCH 4.9 000/107] 4.9.120-stable review Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 001/107] ext4: fix check to prevent initializing reserved inodes Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 002/107] tpm: fix race condition in tpm_common_write() Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 003/107] parisc: Enable CONFIG_MLONGCALLS by default Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 005/107] kasan: add no_sanitize attribute for clang builds Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 006/107] Mark HI and TASKLET softirq synchronous Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 007/107] xen/netfront: dont cache skb_shinfo() Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 008/107] ACPI / LPSS: Add missing prv_offset setting for byt/cht PWM devices Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 009/107] scsi: sr: Avoid that opening a CD-ROM hangs with runtime power management enabled Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 010/107] init: rename and re-order boot_cpu_state_init() Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 011/107] root dentries need RCU-delayed freeing Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 012/107] make sure that __dentry_kill() always invalidates d_seq, unhashed or not Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 013/107] fix mntput/mntput race Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 014/107] fix __legitimize_mnt()/mntput() race Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 015/107] proc/sysctl: prune stale dentries during unregistering Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 016/107] proc/sysctl: Dont grab i_lock under sysctl_lock Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 017/107] proc: Fix proc_sys_prune_dcache to hold a sb reference Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 018/107] IB/core: Make testing MR flags for writability a static inline function Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 019/107] IB/mlx4: Mark user MR as writable if actual virtual memory is writable Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 020/107] mtd: nand: qcom: Add a NULL check for devm_kasprintf() Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 021/107] IB/ocrdma: fix out of bounds access to local buffer Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 022/107] ARM: dts: imx6sx: fix irq for pcie bridge Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 023/107] x86/paravirt: Fix spectre-v2 mitigations for paravirt guests Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 024/107] x86/speculation: Protect against userspace-userspace spectreRSB Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 025/107] kprobes/x86: Fix %p uses in error messages Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 026/107] x86/irqflags: Provide a declaration for native_save_fl Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 027/107] x86/speculation/l1tf: Increase 32bit PAE __PHYSICAL_PAGE_SHIFT Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 028/107] mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1 Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 029/107] x86/speculation/l1tf: Change order of offset/type in swap entry Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 030/107] x86/speculation/l1tf: Protect swap entries against L1TF Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 031/107] x86/speculation/l1tf: Protect PROT_NONE PTEs against speculation Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 032/107] x86/speculation/l1tf: Make sure the first page is always reserved Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 033/107] x86/speculation/l1tf: Add sysfs reporting for l1tf Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 034/107] x86/speculation/l1tf: Disallow non privileged high MMIO PROT_NONE mappings Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 035/107] x86/speculation/l1tf: Limit swap file size to MAX_PA/2 Greg Kroah-Hartman
2018-08-14 17:16 ` [PATCH 4.9 036/107] x86/bugs: Move the l1tf function and define pr_fmt properly Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 037/107] x86/smp: Provide topology_is_primary_thread() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 038/107] x86/topology: Provide topology_smt_supported() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 039/107] cpu/hotplug: Make bringup/teardown of smp threads symmetric Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 040/107] cpu/hotplug: Split do_cpu_down() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 041/107] cpu/hotplug: Provide knobs to control SMT Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 042/107] x86/cpu: Remove the pointless CPU printout Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 043/107] x86/cpu/AMD: Remove the pointless detect_ht() call Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 044/107] x86/cpu/common: Provide detect_ht_early() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 045/107] x86/cpu/topology: Provide detect_extended_topology_early() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 046/107] x86/cpu/intel: Evaluate smp_num_siblings early Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 047/107] x86/CPU/AMD: Do not check CPUID max ext level before parsing SMP info Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 048/107] x86/cpu/AMD: Evaluate smp_num_siblings early Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 050/107] x86/speculation/l1tf: Extend 64bit swap file size limit Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 051/107] x86/cpufeatures: Add detection of L1D cache flush support Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 052/107] x86/CPU/AMD: Move TOPOEXT reenablement before reading smp_num_siblings Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 053/107] x86/speculation/l1tf: Protect PAE swap entries against L1TF Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 054/107] x86/speculation/l1tf: Fix up pte->pfn conversion for PAE Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 055/107] Revert "x86/apic: Ignore secondary threads if nosmt=force" Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 056/107] cpu/hotplug: Boot HT siblings at least once Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 057/107] x86/KVM: Warn user if KVM is loaded SMT and L1TF CPU bug being present Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 058/107] x86/KVM/VMX: Add module argument for L1TF mitigation Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 059/107] x86/KVM/VMX: Add L1D flush algorithm Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 060/107] x86/KVM/VMX: Add L1D MSR based flush Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 061/107] x86/KVM/VMX: Add L1D flush logic Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 063/107] x86/KVM/VMX: Split the VMX MSR LOAD structures to have an host/guest numbers Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 064/107] x86/KVM/VMX: Add find_msr() helper function Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 065/107] x86/KVM/VMX: Separate the VMX AUTOLOAD guest/host number accounting Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 066/107] x86/KVM/VMX: Extend add_atomic_switch_msr() to allow VMENTER only MSRs Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 067/107] x86/KVM/VMX: Use MSR save list for IA32_FLUSH_CMD if required Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 068/107] cpu/hotplug: Online siblings when SMT control is turned on Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 069/107] x86/litf: Introduce vmx status variable Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 070/107] x86/kvm: Drop L1TF MSR list approach Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 071/107] x86/l1tf: Handle EPT disabled state proper Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 072/107] x86/kvm: Move l1tf setup function Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 073/107] x86/kvm: Add static key for flush always Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 074/107] x86/kvm: Serialize L1D flush parameter setter Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 075/107] x86/kvm: Allow runtime control of L1D flush Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 076/107] cpu/hotplug: Expose SMT control init function Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 077/107] cpu/hotplug: Set CPU_SMT_NOT_SUPPORTED early Greg Kroah-Hartman
2018-08-14 17:17 ` Greg Kroah-Hartman [this message]
2018-08-14 17:17 ` [PATCH 4.9 079/107] Documentation: Add section about CPU vulnerabilities Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 080/107] x86/KVM/VMX: Initialize the vmx_l1d_flush_pages content Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 081/107] Documentation/l1tf: Fix typos Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 082/107] cpu/hotplug: detect SMT disabled by BIOS Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 083/107] x86/KVM/VMX: Dont set l1tf_flush_l1d to true from vmx_l1d_flush() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 084/107] x86/KVM/VMX: Replace vmx_l1d_flush_always with vmx_l1d_flush_cond Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 085/107] x86/KVM/VMX: Move the l1tf_flush_l1d test to vmx_l1d_flush() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 086/107] x86/irq: Demote irq_cpustat_t::__softirq_pending to u16 Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 087/107] x86/KVM/VMX: Introduce per-host-cpu analogue of l1tf_flush_l1d Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 088/107] x86: Dont include linux/irq.h from asm/hardirq.h Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 089/107] x86/irq: Let interrupt handlers set kvm_cpu_l1tf_flush_l1d Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 090/107] x86/KVM/VMX: Dont set l1tf_flush_l1d from vmx_handle_external_intr() Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 091/107] Documentation/l1tf: Remove Yonah processors from not vulnerable list Greg Kroah-Hartman
2018-08-14 17:17 ` [PATCH 4.9 096/107] KVM: VMX: support MSR_IA32_ARCH_CAPABILITIES as a feature MSR Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 097/107] x86/speculation: Simplify sysfs report of VMX L1TF vulnerability Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 098/107] x86/speculation: Use ARCH_CAPABILITIES to skip L1D flush on vmentry Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 099/107] KVM: VMX: Tell the nested hypervisor " Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 100/107] cpu/hotplug: Fix SMT supported evaluation Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 101/107] x86/speculation/l1tf: Invert all not present mappings Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 102/107] x86/speculation/l1tf: Make pmd/pud_mknotpresent() invert Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 103/107] x86/mm/pat: Make set_memory_np() L1TF safe Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 104/107] x86/mm/kmmio: Make the tracer robust against L1TF Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 105/107] tools headers: Synchronise x86 cpufeatures.h for L1TF additions Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 106/107] x86/microcode: Do not upload microcode if CPUs are offline Greg Kroah-Hartman
2018-08-14 17:18 ` [PATCH 4.9 107/107] x86/microcode: Allow late microcode loading with SMT disabled Greg Kroah-Hartman
2018-08-14 18:58 ` [PATCH 4.9 000/107] 4.9.120-stable review Nathan Chancellor
2018-08-15 5:51 ` Greg Kroah-Hartman
2018-08-15 0:36 ` Sebastian Gottschall
2018-08-15 1:00 ` Nathan Chancellor
2018-08-15 1:01 ` Guenter Roeck
2018-08-15 5:55 ` Greg Kroah-Hartman
2018-08-15 6:14 ` Greg Kroah-Hartman
2018-08-15 12:20 ` Guenter Roeck
2018-08-15 13:14 ` Greg Kroah-Hartman
2018-08-15 13:12 ` Guenter Roeck
2018-08-15 17:01 ` Sebastian Gottschall
2018-08-15 17:52 ` Sven Joachim
2018-08-15 18:22 ` Sebastian Gottschall
2018-08-15 18:26 ` Linus Torvalds
2018-08-15 18:33 ` Sebastian Gottschall
2018-08-15 19:10 ` Greg Kroah-Hartman
2018-08-15 18:27 ` Sebastian Gottschall
2018-08-15 18:55 ` Guenter Roeck
2018-08-15 19:08 ` Sebastian Gottschall
2018-08-15 19:26 ` Guenter Roeck
2018-08-15 19:42 ` Linus Torvalds
2018-08-15 20:33 ` Sebastian Gottschall
2018-08-15 20:42 ` Linus Torvalds
2018-08-16 7:03 ` Sebastian Gottschall
2018-08-15 20:40 ` Guenter Roeck
2018-08-15 19:14 ` Greg Kroah-Hartman
2018-08-15 19:11 ` Greg Kroah-Hartman
2018-08-15 20:43 ` Dan Rue
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=20180814171525.548934326@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=dwmw@amazon.co.uk \
--cc=jkosina@suse.cz \
--cc=jpoimboe@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).