Merge branches 'for-next/misc' and 'for-next/mpam' into for-next/core

* for-next/misc:
  : Miscellaneous cleanups/fixes
  virt: arm-cca-guest: fix error check for RSI_INCOMPLETE
  arm64/hwcap: Include kernel-hwcap.h in list of generated files

* for-next/mpam:
  : Fix an unmount->remount problem with the CDP emulation, uninitialised
  : variable and checker warnings
  arm_mpam: resctrl: Make resctrl_mon_ctx_waiters static
  arm_mpam: resctrl: Fix the check for no monitor components found
  arm_mpam: resctrl: Fix MBA CDP alloc_capable handling on unmount

Author: ctmarinas

arch/arm64/include/asm/Kbuild

@@ -17,4 +17,5 @@ generic-y += parport.h
 generic-y += user.h
 
 generated-y += cpucap-defs.h
+generated-y += kernel-hwcap.h
 generated-y += sysreg-defs.h

drivers/resctrl/mpam_resctrl.c

@@ -22,7 +22,7 @@
 
 #include "mpam_internal.h"
 
-DECLARE_WAIT_QUEUE_HEAD(resctrl_mon_ctx_waiters);
+static DECLARE_WAIT_QUEUE_HEAD(resctrl_mon_ctx_waiters);
 
 /*
  * The classes we've picked to map to resctrl resources, wrapped
@@ -220,10 +220,18 @@ int resctrl_arch_set_cdp_enabled(enum resctrl_res_level rid, bool enable)
 	if (cdp_enabled && !mpam_resctrl_controls[RDT_RESOURCE_MBA].cdp_enabled)
 		mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = false;
 
+	/*
+	 * If resctrl has attempted to enable CDP on MBA, re-enable MBA as two
+	 * configurations will be provided so there is no aliasing problem.
+	 */
 	if (mpam_resctrl_controls[RDT_RESOURCE_MBA].cdp_enabled &&
 	    mpam_resctrl_controls[RDT_RESOURCE_MBA].class)
 		mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = true;
 
+	/* On unmount when CDP is disabled, re-enable MBA */
+	if (!cdp_enabled && mpam_resctrl_controls[RDT_RESOURCE_MBA].class)
+		mpam_resctrl_controls[RDT_RESOURCE_MBA].resctrl_res.alloc_capable = true;
+
 	if (enable) {
 		if (mpam_partid_max < 1)
 			return -EINVAL;
@@ -1399,7 +1407,7 @@ mpam_resctrl_alloc_domain(unsigned int cpu, struct mpam_resctrl_res *res)
 	}
 
 	if (r->mon_capable) {
-		struct mpam_component *any_mon_comp;
+		struct mpam_component *any_mon_comp = NULL;
 		struct mpam_resctrl_mon *mon;
 		enum resctrl_event_id eventid;
 

drivers/virt/coco/arm-cca-guest/arm-cca-guest.c

@@ -157,7 +157,8 @@ static int arm_cca_report_new(struct tsm_report *report, void *data)
 		} while (info.result == RSI_INCOMPLETE &&
 			 info.offset < RSI_GRANULE_SIZE);
 
-		if (info.result != RSI_SUCCESS) {
+		/* Break out in case of failure */
+		if (info.result != RSI_SUCCESS && info.result != RSI_INCOMPLETE) {
 			ret = -ENXIO;
 			token_size = 0;
 			goto exit_free_granule_page;