Merge tag 'v4.19-rc6' into for-4.20/block

Merge -rc6 in, for two reasons:

1) Resolve a trivial conflict in the blk-mq-tag.c documentation
2) A few important regression fixes went into upstream directly, so
   they aren't in the 4.20 branch.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

* tag 'v4.19-rc6': (780 commits)
  Linux 4.19-rc6
  MAINTAINERS: fix reference to moved drivers/{misc => auxdisplay}/panel.c
  cpufreq: qcom-kryo: Fix section annotations
  perf/core: Add sanity check to deal with pinned event failure
  xen/blkfront: correct purging of persistent grants
  Revert "xen/blkfront: When purging persistent grants, keep them in the buffer"
  selftests/powerpc: Fix Makefiles for headers_install change
  blk-mq: I/O and timer unplugs are inverted in blktrace
  dax: Fix deadlock in dax_lock_mapping_entry()
  x86/boot: Fix kexec booting failure in the SEV bit detection code
  bcache: add separate workqueue for journal_write to avoid deadlock
  drm/amd/display: Fix Edid emulation for linux
  drm/amd/display: Fix Vega10 lightup on S3 resume
  drm/amdgpu: Fix vce work queue was not cancelled when suspend
  Revert "drm/panel: Add device_link from panel device to DRM device"
  xen/blkfront: When purging persistent grants, keep them in the buffer
  clocksource/drivers/timer-atmel-pit: Properly handle error cases
  block: fix deadline elevator drain for zoned block devices
  ACPI / hotplug / PCI: Don't scan for non-hotplug bridges if slot is not bridge
  drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is set
  ...

Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 15 insertions, 10 deletions

diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index f4bbb28026f8..58709e89a8ed 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -78,23 +78,28 @@ static struct notifier_block iss_panic_block = {
 
 void __init platform_setup(char **p_cmdline)
 {
+	static void *argv[COMMAND_LINE_SIZE / sizeof(void *)] __initdata;
+	static char cmdline[COMMAND_LINE_SIZE] __initdata;
 	int argc = simc_argc();
 	int argv_size = simc_argv_size();
 
 	if (argc > 1) {
-		void **argv = alloc_bootmem(argv_size);
-		char *cmdline = alloc_bootmem(argv_size);
-		int i;
+		if (argv_size > sizeof(argv)) {
+			pr_err("%s: command line too long: argv_size = %d\n",
+			       __func__, argv_size);
+		} else {
+			int i;
 
-		cmdline[0] = 0;
-		simc_argv((void *)argv);
+			cmdline[0] = 0;
+			simc_argv((void *)argv);
 
-		for (i = 1; i < argc; ++i) {
-			if (i > 1)
-				strcat(cmdline, " ");
-			strcat(cmdline, argv[i]);
+			for (i = 1; i < argc; ++i) {
+				if (i > 1)
+					strcat(cmdline, " ");
+				strcat(cmdline, argv[i]);
+			}
+			*p_cmdline = cmdline;
 		}
-		*p_cmdline = cmdline;
 	}
 
 	atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);