Just some link/style/typo fixes as follows: - fix location of admin-guide file - fix prctl arg number to match prctl man page - fix typos and add some words Signed-off-by: Misono Tomohiro <misono.tomohiro@xxxxxxxxxxxxxx> --- Documentation/vm/hwpoison.rst | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/Documentation/vm/hwpoison.rst b/Documentation/vm/hwpoison.rst index a5c884293dac..f163bf49cfde 100644 --- a/Documentation/vm/hwpoison.rst +++ b/Documentation/vm/hwpoison.rst @@ -40,7 +40,7 @@ To quote the overview comment:: for the mapping from a vma to a process. Since this case is expected to be rare we hope we can get away with this. -The code consists of a the high level handler in mm/memory-failure.c, +The code consists of a high level handler in mm/memory-failure.c, a new page poison bit and various checks in the VM to handle poisoned pages. @@ -50,7 +50,7 @@ of applications. KVM support requires a recent qemu-kvm release. For the KVM use there was need for a new signal type so that KVM can inject the machine check into the guest with the proper address. This in theory allows other applications to handle -memory failures too. The expection is that near all applications +memory failures too. The expectation is that near all applications won't do that, but some very specialized ones might. Failure recovery modes @@ -67,30 +67,31 @@ early kill (can be controlled globally and per process) Send SIGBUS to the application as soon as the error is detected This allows applications who can process memory errors in a gentle - way (e.g. drop affected object) + way (e.g. drop affected object). This is the mode used by KVM qemu. late kill Send SIGBUS when the application runs into the corrupted page. - This is best for memory error unaware applications and default + This is best for memory error unaware applications and default. Note some pages are always handled as late kill. User control ============ vm.memory_failure_recovery - See sysctl.txt + Enable memory failure recovery instead of panic. + See admin-guide/sysctl/vm.rst vm.memory_failure_early_kill - Enable early kill mode globally + Enable early kill mode globally. See admin-guide/sysctl/vm.rst -PR_MCE_KILL +prctl PR_MCE_KILL Set early/late kill mode/revert to system default - arg1: PR_MCE_KILL_CLEAR: + arg2: PR_MCE_KILL_CLEAR: Revert to system default - arg1: PR_MCE_KILL_SET: - arg2 defines thread specific mode + arg2: PR_MCE_KILL_SET: + arg3 defines thread specific mode PR_MCE_KILL_EARLY: Early kill @@ -104,7 +105,7 @@ PR_MCE_KILL call prctl(PR_MCE_KILL_EARLY) on the designated thread. Otherwise, the SIGBUS is sent to the main thread. -PR_MCE_KILL_GET +prctl PR_MCE_KILL_GET return current mode Testing -- 2.21.3
