Linux patch 5.10.49

Signed-off-by: Mike Pagano <mpagano@gentoo.org>

2 files changed, 520 insertions, 0 deletions

diff --git a/0000_README b/0000_README
index aefbc8e1..534b76a5 100644
--- a/0000_README
+++ b/0000_README
@@ -235,6 +235,10 @@ Patch:  1047_linux-5.10.48.patch
 From:   http://www.kernel.org
 Desc:   Linux 5.10.48
 
+Patch:  1048_linux-5.10.49.patch
+From:   http://www.kernel.org
+Desc:   Linux 5.10.49
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.
diff --git a/1048_linux-5.10.49.patch b/1048_linux-5.10.49.patch
new file mode 100644
index 00000000..481f258f
--- /dev/null
+++ b/1048_linux-5.10.49.patch
@@ -0,0 +1,516 @@
+diff --git a/Makefile b/Makefile
+index 52dcfe3371c4c..c51b73455ea33 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,7 +1,7 @@
+ # SPDX-License-Identifier: GPL-2.0
+ VERSION = 5
+ PATCHLEVEL = 10
+-SUBLEVEL = 48
++SUBLEVEL = 49
+ EXTRAVERSION =
+ NAME = Dare mighty things
+ 
+diff --git a/arch/hexagon/Makefile b/arch/hexagon/Makefile
+index c168c6980d050..74b644ea8a00a 100644
+--- a/arch/hexagon/Makefile
++++ b/arch/hexagon/Makefile
+@@ -10,6 +10,9 @@ LDFLAGS_vmlinux += -G0
+ # Do not use single-byte enums; these will overflow.
+ KBUILD_CFLAGS += -fno-short-enums
+ 
++# We must use long-calls:
++KBUILD_CFLAGS += -mlong-calls
++
+ # Modules must use either long-calls, or use pic/plt.
+ # Use long-calls for now, it's easier.  And faster.
+ # KBUILD_CFLAGS_MODULE += -fPIC
+@@ -30,9 +33,6 @@ TIR_NAME := r19
+ KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
+ KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
+ 
+-LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null)
+-libs-y += $(LIBGCC)
+-
+ head-y := arch/hexagon/kernel/head.o
+ 
+ core-y += arch/hexagon/kernel/ \
+diff --git a/arch/hexagon/include/asm/futex.h b/arch/hexagon/include/asm/futex.h
+index 6b9c554aee78e..9fb00a0ae89f7 100644
+--- a/arch/hexagon/include/asm/futex.h
++++ b/arch/hexagon/include/asm/futex.h
+@@ -21,7 +21,7 @@
+ 	"3:\n" \
+ 	".section .fixup,\"ax\"\n" \
+ 	"4: %1 = #%5;\n" \
+-	"   jump 3b\n" \
++	"   jump ##3b\n" \
+ 	".previous\n" \
+ 	".section __ex_table,\"a\"\n" \
+ 	".long 1b,4b,2b,4b\n" \
+@@ -90,7 +90,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, u32 oldval,
+ 	"3:\n"
+ 	".section .fixup,\"ax\"\n"
+ 	"4: %0 = #%6\n"
+-	"   jump 3b\n"
++	"   jump ##3b\n"
+ 	".previous\n"
+ 	".section __ex_table,\"a\"\n"
+ 	".long 1b,4b,2b,4b\n"
+diff --git a/arch/hexagon/include/asm/timex.h b/arch/hexagon/include/asm/timex.h
+index 78338d8ada83f..8d4ec76fceb45 100644
+--- a/arch/hexagon/include/asm/timex.h
++++ b/arch/hexagon/include/asm/timex.h
+@@ -8,6 +8,7 @@
+ 
+ #include <asm-generic/timex.h>
+ #include <asm/timer-regs.h>
++#include <asm/hexagon_vm.h>
+ 
+ /* Using TCX0 as our clock.  CLOCK_TICK_RATE scheduled to be removed. */
+ #define CLOCK_TICK_RATE              TCX0_CLK_RATE
+@@ -16,7 +17,7 @@
+ 
+ static inline int read_current_timer(unsigned long *timer_val)
+ {
+-	*timer_val = (unsigned long) __vmgettime();
++	*timer_val = __vmgettime();
+ 	return 0;
+ }
+ 
+diff --git a/arch/hexagon/kernel/hexagon_ksyms.c b/arch/hexagon/kernel/hexagon_ksyms.c
+index 6fb1aaab1c298..35545a7386a06 100644
+--- a/arch/hexagon/kernel/hexagon_ksyms.c
++++ b/arch/hexagon/kernel/hexagon_ksyms.c
+@@ -35,8 +35,8 @@ EXPORT_SYMBOL(_dflt_cache_att);
+ DECLARE_EXPORT(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes);
+ 
+ /* Additional functions */
+-DECLARE_EXPORT(__divsi3);
+-DECLARE_EXPORT(__modsi3);
+-DECLARE_EXPORT(__udivsi3);
+-DECLARE_EXPORT(__umodsi3);
++DECLARE_EXPORT(__hexagon_divsi3);
++DECLARE_EXPORT(__hexagon_modsi3);
++DECLARE_EXPORT(__hexagon_udivsi3);
++DECLARE_EXPORT(__hexagon_umodsi3);
+ DECLARE_EXPORT(csum_tcpudp_magic);
+diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c
+index a5a89e944257c..8975f9b4cedf0 100644
+--- a/arch/hexagon/kernel/ptrace.c
++++ b/arch/hexagon/kernel/ptrace.c
+@@ -35,7 +35,7 @@ void user_disable_single_step(struct task_struct *child)
+ 
+ static int genregs_get(struct task_struct *target,
+ 		   const struct user_regset *regset,
+-		   srtuct membuf to)
++		   struct membuf to)
+ {
+ 	struct pt_regs *regs = task_pt_regs(target);
+ 
+@@ -54,7 +54,7 @@ static int genregs_get(struct task_struct *target,
+ 	membuf_store(&to, regs->m0);
+ 	membuf_store(&to, regs->m1);
+ 	membuf_store(&to, regs->usr);
+-	membuf_store(&to, regs->p3_0);
++	membuf_store(&to, regs->preds);
+ 	membuf_store(&to, regs->gp);
+ 	membuf_store(&to, regs->ugp);
+ 	membuf_store(&to, pt_elr(regs)); // pc
+diff --git a/arch/hexagon/lib/Makefile b/arch/hexagon/lib/Makefile
+index 54be529d17a25..a64641e89d5fe 100644
+--- a/arch/hexagon/lib/Makefile
++++ b/arch/hexagon/lib/Makefile
+@@ -2,4 +2,5 @@
+ #
+ # Makefile for hexagon-specific library files.
+ #
+-obj-y = checksum.o io.o memcpy.o memset.o
++obj-y = checksum.o io.o memcpy.o memset.o memcpy_likely_aligned.o \
++         divsi3.o modsi3.o udivsi3.o  umodsi3.o
+diff --git a/arch/hexagon/lib/divsi3.S b/arch/hexagon/lib/divsi3.S
+new file mode 100644
+index 0000000000000..783e09424c2c8
+--- /dev/null
++++ b/arch/hexagon/lib/divsi3.S
+@@ -0,0 +1,67 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++/*
++ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
++ */
++
++#include <linux/linkage.h>
++
++SYM_FUNC_START(__hexagon_divsi3)
++        {
++                p0 = cmp.gt(r0,#-1)
++                p1 = cmp.gt(r1,#-1)
++                r3:2 = vabsw(r1:0)
++        }
++        {
++                p3 = xor(p0,p1)
++                r4 = sub(r2,r3)
++                r6 = cl0(r2)
++                p0 = cmp.gtu(r3,r2)
++        }
++        {
++                r0 = mux(p3,#-1,#1)
++                r7 = cl0(r3)
++                p1 = cmp.gtu(r3,r4)
++        }
++        {
++                r0 = mux(p0,#0,r0)
++                p0 = or(p0,p1)
++                if (p0.new) jumpr:nt r31
++                r6 = sub(r7,r6)
++        }
++        {
++                r7 = r6
++                r5:4 = combine(#1,r3)
++                r6 = add(#1,lsr(r6,#1))
++                p0 = cmp.gtu(r6,#4)
++        }
++        {
++                r5:4 = vaslw(r5:4,r7)
++                if (!p0) r6 = #3
++        }
++        {
++                loop0(1f,r6)
++                r7:6 = vlsrw(r5:4,#1)
++                r1:0 = #0
++        }
++        .falign
++1:
++        {
++                r5:4 = vlsrw(r5:4,#2)
++                if (!p0.new) r0 = add(r0,r5)
++                if (!p0.new) r2 = sub(r2,r4)
++                p0 = cmp.gtu(r4,r2)
++        }
++        {
++                r7:6 = vlsrw(r7:6,#2)
++                if (!p0.new) r0 = add(r0,r7)
++                if (!p0.new) r2 = sub(r2,r6)
++                p0 = cmp.gtu(r6,r2)
++        }:endloop0
++        {
++                if (!p0) r0 = add(r0,r7)
++        }
++        {
++                if (p3) r0 = sub(r1,r0)
++                jumpr r31
++        }
++SYM_FUNC_END(__hexagon_divsi3)
+diff --git a/arch/hexagon/lib/memcpy_likely_aligned.S b/arch/hexagon/lib/memcpy_likely_aligned.S
+new file mode 100644
+index 0000000000000..6a541fb90a540
+--- /dev/null
++++ b/arch/hexagon/lib/memcpy_likely_aligned.S
+@@ -0,0 +1,56 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++/*
++ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
++ */
++
++#include <linux/linkage.h>
++
++SYM_FUNC_START(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes)
++        {
++                p0 = bitsclr(r1,#7)
++                p0 = bitsclr(r0,#7)
++                if (p0.new) r5:4 = memd(r1)
++                if (p0.new) r7:6 = memd(r1+#8)
++        }
++        {
++                if (!p0) jump:nt .Lmemcpy_call
++                if (p0) r9:8 = memd(r1+#16)
++                if (p0) r11:10 = memd(r1+#24)
++                p0 = cmp.gtu(r2,#64)
++        }
++        {
++                if (p0) jump:nt .Lmemcpy_call
++                if (!p0) memd(r0) = r5:4
++                if (!p0) memd(r0+#8) = r7:6
++                p0 = cmp.gtu(r2,#32)
++        }
++        {
++                p1 = cmp.gtu(r2,#40)
++                p2 = cmp.gtu(r2,#48)
++                if (p0) r13:12 = memd(r1+#32)
++                if (p1.new) r15:14 = memd(r1+#40)
++        }
++        {
++                memd(r0+#16) = r9:8
++                memd(r0+#24) = r11:10
++        }
++        {
++                if (p0) memd(r0+#32) = r13:12
++                if (p1) memd(r0+#40) = r15:14
++                if (!p2) jumpr:t r31
++        }
++        {
++                p0 = cmp.gtu(r2,#56)
++                r5:4 = memd(r1+#48)
++                if (p0.new) r7:6 = memd(r1+#56)
++        }
++        {
++                memd(r0+#48) = r5:4
++                if (p0) memd(r0+#56) = r7:6
++                jumpr r31
++        }
++
++.Lmemcpy_call:
++        jump memcpy
++
++SYM_FUNC_END(__hexagon_memcpy_likely_aligned_min32bytes_mult8bytes)
+diff --git a/arch/hexagon/lib/modsi3.S b/arch/hexagon/lib/modsi3.S
+new file mode 100644
+index 0000000000000..9ea1c86efac2b
+--- /dev/null
++++ b/arch/hexagon/lib/modsi3.S
+@@ -0,0 +1,46 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++/*
++ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
++ */
++
++#include <linux/linkage.h>
++
++SYM_FUNC_START(__hexagon_modsi3)
++        {
++                p2 = cmp.ge(r0,#0)
++                r2 = abs(r0)
++                r1 = abs(r1)
++        }
++        {
++                r3 = cl0(r2)
++                r4 = cl0(r1)
++                p0 = cmp.gtu(r1,r2)
++        }
++        {
++                r3 = sub(r4,r3)
++                if (p0) jumpr r31
++        }
++        {
++                p1 = cmp.eq(r3,#0)
++                loop0(1f,r3)
++                r0 = r2
++                r2 = lsl(r1,r3)
++        }
++        .falign
++1:
++        {
++                p0 = cmp.gtu(r2,r0)
++                if (!p0.new) r0 = sub(r0,r2)
++                r2 = lsr(r2,#1)
++                if (p1) r1 = #0
++        }:endloop0
++        {
++                p0 = cmp.gtu(r2,r0)
++                if (!p0.new) r0 = sub(r0,r1)
++                if (p2) jumpr r31
++        }
++        {
++                r0 = neg(r0)
++                jumpr r31
++        }
++SYM_FUNC_END(__hexagon_modsi3)
+diff --git a/arch/hexagon/lib/udivsi3.S b/arch/hexagon/lib/udivsi3.S
+new file mode 100644
+index 0000000000000..477f27b9311cd
+--- /dev/null
++++ b/arch/hexagon/lib/udivsi3.S
+@@ -0,0 +1,38 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++/*
++ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
++ */
++
++#include <linux/linkage.h>
++
++SYM_FUNC_START(__hexagon_udivsi3)
++        {
++                r2 = cl0(r0)
++                r3 = cl0(r1)
++                r5:4 = combine(#1,#0)
++                p0 = cmp.gtu(r1,r0)
++        }
++        {
++                r6 = sub(r3,r2)
++                r4 = r1
++                r1:0 = combine(r0,r4)
++                if (p0) jumpr r31
++        }
++        {
++                r3:2 = vlslw(r5:4,r6)
++                loop0(1f,r6)
++        }
++        .falign
++1:
++        {
++                p0 = cmp.gtu(r2,r1)
++                if (!p0.new) r1 = sub(r1,r2)
++                if (!p0.new) r0 = add(r0,r3)
++                r3:2 = vlsrw(r3:2,#1)
++        }:endloop0
++        {
++                p0 = cmp.gtu(r2,r1)
++                if (!p0.new) r0 = add(r0,r3)
++                jumpr r31
++        }
++SYM_FUNC_END(__hexagon_udivsi3)
+diff --git a/arch/hexagon/lib/umodsi3.S b/arch/hexagon/lib/umodsi3.S
+new file mode 100644
+index 0000000000000..280bf06a55e7d
+--- /dev/null
++++ b/arch/hexagon/lib/umodsi3.S
+@@ -0,0 +1,36 @@
++/* SPDX-License-Identifier: GPL-2.0-only */
++/*
++ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
++ */
++
++#include <linux/linkage.h>
++
++SYM_FUNC_START(__hexagon_umodsi3)
++        {
++                r2 = cl0(r0)
++                r3 = cl0(r1)
++                p0 = cmp.gtu(r1,r0)
++        }
++        {
++                r2 = sub(r3,r2)
++                if (p0) jumpr r31
++        }
++        {
++                loop0(1f,r2)
++                p1 = cmp.eq(r2,#0)
++                r2 = lsl(r1,r2)
++        }
++        .falign
++1:
++        {
++                p0 = cmp.gtu(r2,r0)
++                if (!p0.new) r0 = sub(r0,r2)
++                r2 = lsr(r2,#1)
++                if (p1) r1 = #0
++        }:endloop0
++        {
++                p0 = cmp.gtu(r2,r0)
++                if (!p0.new) r0 = sub(r0,r1)
++                jumpr r31
++        }
++SYM_FUNC_END(__hexagon_umodsi3)
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index 280f7992ae993..965b702208d85 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -3583,6 +3583,7 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit,
+ 	unsigned long host_tidr = mfspr(SPRN_TIDR);
+ 	unsigned long host_iamr = mfspr(SPRN_IAMR);
+ 	unsigned long host_amr = mfspr(SPRN_AMR);
++	unsigned long host_fscr = mfspr(SPRN_FSCR);
+ 	s64 dec;
+ 	u64 tb;
+ 	int trap, save_pmu;
+@@ -3726,6 +3727,9 @@ static int kvmhv_p9_guest_entry(struct kvm_vcpu *vcpu, u64 time_limit,
+ 	if (host_amr != vcpu->arch.amr)
+ 		mtspr(SPRN_AMR, host_amr);
+ 
++	if (host_fscr != vcpu->arch.fscr)
++		mtspr(SPRN_FSCR, host_fscr);
++
+ 	msr_check_and_set(MSR_FP | MSR_VEC | MSR_VSX);
+ 	store_fp_state(&vcpu->arch.fp);
+ #ifdef CONFIG_ALTIVEC
+diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
+index 5ad5282641350..282f3d2388cc2 100644
+--- a/drivers/media/usb/uvc/uvc_driver.c
++++ b/drivers/media/usb/uvc/uvc_driver.c
+@@ -1588,6 +1588,31 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
+ 				return -EINVAL;
+ 			}
+ 
++			/*
++			 * Some devices reference an output terminal as the
++			 * source of extension units. This is incorrect, as
++			 * output terminals only have an input pin, and thus
++			 * can't be connected to any entity in the forward
++			 * direction. The resulting topology would cause issues
++			 * when registering the media controller graph. To
++			 * avoid this problem, connect the extension unit to
++			 * the source of the output terminal instead.
++			 */
++			if (UVC_ENTITY_IS_OTERM(entity)) {
++				struct uvc_entity *source;
++
++				source = uvc_entity_by_id(chain->dev,
++							  entity->baSourceID[0]);
++				if (!source) {
++					uvc_trace(UVC_TRACE_DESCR,
++						"Can't connect extension unit %u in chain\n",
++						forward->id);
++					break;
++				}
++
++				forward->baSourceID[0] = source->id;
++			}
++
+ 			list_add_tail(&forward->chain, &chain->entities);
+ 			if (uvc_trace_param & UVC_TRACE_PROBE) {
+ 				if (!found)
+@@ -1608,6 +1633,13 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
+ 				return -EINVAL;
+ 			}
+ 
++			if (UVC_ENTITY_IS_OTERM(entity)) {
++				uvc_trace(UVC_TRACE_DESCR,
++					"Unsupported connection between output terminals %u and %u\n",
++					entity->id, forward->id);
++				break;
++			}
++
+ 			list_add_tail(&forward->chain, &chain->entities);
+ 			if (uvc_trace_param & UVC_TRACE_PROBE) {
+ 				if (!found)
+diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
+index 29bec07205142..af0f6ad32522c 100644
+--- a/drivers/xen/events/events_base.c
++++ b/drivers/xen/events/events_base.c
+@@ -583,6 +583,9 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
+ 	}
+ 
+ 	info->eoi_time = 0;
++
++	/* is_active hasn't been reset yet, do it now. */
++	smp_store_release(&info->is_active, 0);
+ 	do_unmask(info, EVT_MASK_REASON_EOI_PENDING);
+ }
+ 
+@@ -1807,10 +1810,22 @@ static void lateeoi_ack_dynirq(struct irq_data *data)
+ 	struct irq_info *info = info_for_irq(data->irq);
+ 	evtchn_port_t evtchn = info ? info->evtchn : 0;
+ 
+-	if (VALID_EVTCHN(evtchn)) {
+-		do_mask(info, EVT_MASK_REASON_EOI_PENDING);
+-		ack_dynirq(data);
+-	}
++	if (!VALID_EVTCHN(evtchn))
++		return;
++
++	do_mask(info, EVT_MASK_REASON_EOI_PENDING);
++
++	if (unlikely(irqd_is_setaffinity_pending(data)) &&
++	    likely(!irqd_irq_disabled(data))) {
++		do_mask(info, EVT_MASK_REASON_TEMPORARY);
++
++		clear_evtchn(evtchn);
++
++		irq_move_masked_irq(data);
++
++		do_unmask(info, EVT_MASK_REASON_TEMPORARY);
++	} else
++		clear_evtchn(evtchn);
+ }
+ 
+ static void lateeoi_mask_ack_dynirq(struct irq_data *data)