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kernel-49/arch/sparc/mm/tlb.c
Greg Kroah-Hartman 3063bf541a Merge 4.9.136 into android-4.9
Also revert commit b91d532928df ("ipv6: set rt6i_protocol properly in
the route when it is installed") as it breaks the test systems.

Changes in 4.9.136
	xfrm: Validate address prefix lengths in the xfrm selector.
	xfrm6: call kfree_skb when skb is toobig
	mac80211: Always report TX status
	cfg80211: reg: Init wiphy_idx in regulatory_hint_core()
	mac80211: fix pending queue hang due to TX_DROP
	cfg80211: Address some corner cases in scan result channel updating
	mac80211: TDLS: fix skb queue/priority assignment
	ARM: 8799/1: mm: fix pci_ioremap_io() offset check
	xfrm: validate template mode
	ARM: dts: BCM63xx: Fix incorrect interrupt specifiers
	net: macb: Clean 64b dma addresses if they are not detected
	soc: fsl: qbman: qman: avoid allocating from non existing gen_pool
	soc: fsl: qe: Fix copy/paste bug in ucc_get_tdm_sync_shift()
	nl80211: Fix possible Spectre-v1 for NL80211_TXRATE_HT
	mac80211_hwsim: do not omit multicast announce of first added radio
	Bluetooth: SMP: fix crash in unpairing
	pxa168fb: prepare the clock
	qed: Avoid implicit enum conversion in qed_roce_mode_to_flavor
	qed: Avoid constant logical operation warning in qed_vf_pf_acquire
	asix: Check for supported Wake-on-LAN modes
	ax88179_178a: Check for supported Wake-on-LAN modes
	lan78xx: Check for supported Wake-on-LAN modes
	sr9800: Check for supported Wake-on-LAN modes
	r8152: Check for supported Wake-on-LAN Modes
	smsc75xx: Check for Wake-on-LAN modes
	smsc95xx: Check for Wake-on-LAN modes
	perf/ring_buffer: Prevent concurent ring buffer access
	perf/x86/intel/uncore: Fix PCI BDF address of M3UPI on SKX
	net: fec: fix rare tx timeout
	declance: Fix continuation with the adapter identification message
	net: cxgb3_main: fix a missing-check bug
	perf symbols: Fix memory corruption because of zero length symbols
	mm/memory_hotplug.c: fix overflow in test_pages_in_a_zone()
	MIPS: microMIPS: Fix decoding of swsp16 instruction
	MIPS: Handle non word sized instructions when examining frame
	scsi: aacraid: Fix typo in blink status
	f2fs: fix multiple f2fs_add_link() having same name for inline dentry
	igb: Remove superfluous reset to PHY and page 0 selection
	ACPI: sysfs: Make ACPI GPE mask kernel parameter cover all GPEs
	PCI: Disable MSI for HiSilicon Hip06/Hip07 only in Root Port mode
	i2c: bcm2835: Avoid possible NULL ptr dereference
	efi/fb: Correct PCI_STD_RESOURCE_END usage
	ipv6: set rt6i_protocol properly in the route when it is installed
	platform/x86: acer-wmi: setup accelerometer when ACPI device was found
	IB/ipoib: Do not warn if IPoIB debugfs doesn't exist
	IB/core: Fix the validations of a multicast LID in attach or detach operations
	orangefs: off by ones in xattr size checks
	rxe: Fix a sleep-in-atomic bug in post_one_send
	nvme-pci: fix CMB sysfs file removal in reset path
	net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well.
	net/mlx5: Fix command completion after timeout access invalid structure
	tipc: Fix tipc_sk_reinit handling of -EAGAIN
	tipc: fix a race condition of releasing subscriber object
	bnxt_en: Don't use rtnl lock to protect link change logic in workqueue.
	ath10k: fix NAPI enable/disable symmetry for AHB interface
	ARM: dts: bcm283x: Reserve first page for firmware
	btrfs: fiemap: Cache and merge fiemap extent before submit it to user
	ata: sata_rcar: Handle return value of clk_prepare_enable
	reset: hi6220: Set module license so that it can be loaded
	ASoC: Intel: Skylake: Fix to parse consecutive string tkns in manifest
	arch/sparc: increase CONFIG_NODES_SHIFT on SPARC64 to 5
	mac80211: fix TX aggregation start/stop callback race
	libata: fix error checking in in ata_parse_force_one()
	net: ethernet: stmmac: Fix altr_tse_pcs SGMII Initialization
	qlcnic: Fix tunnel offload for 82xx adapters
	x86/cpu/cyrix: Add alternative Device ID of Geode GX1 SoC
	ARM: 8677/1: boot/compressed: fix decompressor header layout for v7-M
	gpu: ipu-v3: Fix CSI selection for VDIC
	elevator: fix truncation of icq_cache_name
	net: stmmac: ensure jumbo_frm error return is correctly checked for -ve value
	Btrfs: clear EXTENT_DEFRAG bits in finish_ordered_io
	ufs: we need to sync inode before freeing it
	net/mlx5e: Fix fixpoint divide exception in mlx5e_am_stats_compare
	ip6_tunnel: Correct tos value in collect_md mode
	net/mlx5: Fix driver load error flow when firmware is stuck
	perf evsel: Fix probing of precise_ip level for default cycles event
	perf probe: Fix probe definition for inlined functions
	net/mlx5: Fix health work queue spin lock to IRQ safe
	usb: renesas_usbhs: gadget: fix spin_lock_init() for &uep->lock
	usb: renesas_usbhs: gadget: fix unused-but-set-variable warning
	usb: dwc3: omap: remove IRQ_NOAUTOEN used with shared irq
	clk: samsung: Fix m2m scaler clock on Exynos542x
	ptr_ring: fix up after recent ptr_ring changes
	staging: wilc1000: Fix problem with wrong vif index
	rds: ib: Fix missing call to rds_ib_dev_put in rds_ib_setup_qp
	iio: adc: Revert "axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications"
	qed: Warn PTT usage by wrong hw-function
	ocfs2: fix deadlock caused by recursive locking in xattr
	net: cdc_ncm: GetNtbFormat endian fix
	sctp: use right member as the param of list_for_each_entry
	ALSA: hda - No loopback on ALC299 codec
	ath10k: convert warning about non-existent OTP board id to debug message
	ipv6: fix cleanup ordering for ip6_mr failure
	IB/ipoib: Fix lockdep issue found on ipoib_ib_dev_heavy_flush
	IB/rxe: put the pool on allocation failure
	nbd: only set MSG_MORE when we have more to send
	mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'
	IB/mlx5: Avoid passing an invalid QP type to firmware
	scsi: qla2xxx: Avoid double completion of abort command
	drm: bochs: Don't remove uninitialized fbdev framebuffer
	i40e: avoid NVM acquire deadlock during NVM update
	Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0"
	Btrfs: incremental send, fix invalid memory access
	drm/msm: Fix possible null dereference on failure of get_pages()
	module: fix DEBUG_SET_MODULE_RONX typo
	iio: pressure: zpa2326: Remove always-true check which confuses gcc
	l2tp: remove configurable payload offset
	macsec: fix memory leaks when skb_to_sgvec fails
	perf/core: Fix locking for children siblings group read
	cifs: Use ULL suffix for 64-bit constant
	futex: futex_wake_op, do not fail on invalid op
	ALSA: hda - Fix incorrect usage of IS_REACHABLE()
	test_bpf: Fix testing with CONFIG_BPF_JIT_ALWAYS_ON=y on other arches
	xen-netfront: Update features after registering netdev
	sparc64: Fix regression in pmdp_invalidate().
	xen-netfront: Fix mismatched rtnl_unlock
	enic: do not overwrite error code
	bonding: ratelimit failed speed/duplex update warning
	nvmet: fix space padding in serial number
	iio: buffer: fix the function signature to match implementation
	x86/paravirt: Fix some warning messages
	IB/mlx4: Fix an error handling path in 'mlx4_ib_rereg_user_mr()'
	libertas: call into generic suspend code before turning off power
	xhci: Fix USB3 NULL pointer dereference at logical disconnect.
	perf tests: Fix indexing when invoking subtests
	ARM: dts: imx53-qsb: disable 1.2GHz OPP
	rxrpc: Don't check RXRPC_CALL_TX_LAST after calling rxrpc_rotate_tx_window()
	rxrpc: Only take the rwind and mtu values from latest ACK
	net: ena: fix NULL dereference due to untimely napi initialization
	fs/fat/fatent.c: add cond_resched() to fat_count_free_clusters()
	mtd: spi-nor: Add support for is25wp series chips
	Revert "netfilter: ipv6: nf_defrag: drop skb dst before queueing"
	perf tools: Disable parallelism for 'make clean'
	bridge: do not add port to router list when receives query with source 0.0.0.0
	net: bridge: remove ipv6 zero address check in mcast queries
	ipv6: mcast: fix a use-after-free in inet6_mc_check
	ipv6/ndisc: Preserve IPv6 control buffer if protocol error handlers are called
	llc: set SOCK_RCU_FREE in llc_sap_add_socket()
	net/ipv6: Fix index counter for unicast addresses in in6_dump_addrs
	net: sched: gred: pass the right attribute to gred_change_table_def()
	net: socket: fix a missing-check bug
	net: stmmac: Fix stmmac_mdio_reset() when building stmmac as modules
	net: udp: fix handling of CHECKSUM_COMPLETE packets
	r8169: fix NAPI handling under high load
	sctp: fix race on sctp_id2asoc
	vhost: Fix Spectre V1 vulnerability
	ethtool: fix a privilege escalation bug
	bonding: fix length of actor system
	net: drop skb on failure in ip_check_defrag()
	net: fix pskb_trim_rcsum_slow() with odd trim offset
	rtnetlink: Disallow FDB configuration for non-Ethernet device
	ip6_tunnel: Fix encapsulation layout
	Revert "x86/mm: Expand static page table for fixmap space"
	crypto: shash - Fix a sleep-in-atomic bug in shash_setkey_unaligned
	ahci: don't ignore result code of ahci_reset_controller()
	gpio: mxs: Get rid of external API call
	xfs: truncate transaction does not modify the inobt
	cachefiles: fix the race between cachefiles_bury_object() and rmdir(2)
	ptp: fix Spectre v1 vulnerability
	drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl
	RDMA/ucma: Fix Spectre v1 vulnerability
	IB/ucm: Fix Spectre v1 vulnerability
	cdc-acm: correct counting of UART states in serial state notification
	usb: gadget: storage: Fix Spectre v1 vulnerability
	USB: fix the usbfs flag sanitization for control transfers
	Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15IGM
	sched/fair: Fix throttle_list starvation with low CFS quota
	x86/percpu: Fix this_cpu_read()
	x86/time: Correct the attribute on jiffies' definition
	net: fs_enet: do not call phy_stop() in interrupts
	posix-timers: Sanitize overrun handling
	Linux 4.9.136

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2019-02-11 22:51:32 +03:00

302 lines
6.3 KiB
C

/* arch/sparc64/mm/tlb.c
*
* Copyright (C) 2004 David S. Miller <davem@redhat.com>
*/
#include <linux/kernel.h>
#include <linux/percpu.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/preempt.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include <asm/cacheflush.h>
#include <asm/mmu_context.h>
#include <asm/tlb.h>
/* Heavily inspired by the ppc64 code. */
static DEFINE_PER_CPU(struct tlb_batch, tlb_batch);
void flush_tlb_pending(void)
{
struct tlb_batch *tb = &get_cpu_var(tlb_batch);
struct mm_struct *mm = tb->mm;
if (!tb->tlb_nr)
goto out;
flush_tsb_user(tb);
if (CTX_VALID(mm->context)) {
if (tb->tlb_nr == 1) {
global_flush_tlb_page(mm, tb->vaddrs[0]);
} else {
#ifdef CONFIG_SMP
smp_flush_tlb_pending(tb->mm, tb->tlb_nr,
&tb->vaddrs[0]);
#else
__flush_tlb_pending(CTX_HWBITS(tb->mm->context),
tb->tlb_nr, &tb->vaddrs[0]);
#endif
}
}
tb->tlb_nr = 0;
out:
put_cpu_var(tlb_batch);
}
void arch_enter_lazy_mmu_mode(void)
{
struct tlb_batch *tb = this_cpu_ptr(&tlb_batch);
tb->active = 1;
}
void arch_leave_lazy_mmu_mode(void)
{
struct tlb_batch *tb = this_cpu_ptr(&tlb_batch);
if (tb->tlb_nr)
flush_tlb_pending();
tb->active = 0;
}
static void tlb_batch_add_one(struct mm_struct *mm, unsigned long vaddr,
bool exec, bool huge)
{
struct tlb_batch *tb = &get_cpu_var(tlb_batch);
unsigned long nr;
vaddr &= PAGE_MASK;
if (exec)
vaddr |= 0x1UL;
nr = tb->tlb_nr;
if (unlikely(nr != 0 && mm != tb->mm)) {
flush_tlb_pending();
nr = 0;
}
if (!tb->active) {
flush_tsb_user_page(mm, vaddr, huge);
global_flush_tlb_page(mm, vaddr);
goto out;
}
if (nr == 0) {
tb->mm = mm;
tb->huge = huge;
}
if (tb->huge != huge) {
flush_tlb_pending();
tb->huge = huge;
nr = 0;
}
tb->vaddrs[nr] = vaddr;
tb->tlb_nr = ++nr;
if (nr >= TLB_BATCH_NR)
flush_tlb_pending();
out:
put_cpu_var(tlb_batch);
}
void tlb_batch_add(struct mm_struct *mm, unsigned long vaddr,
pte_t *ptep, pte_t orig, int fullmm)
{
bool huge = is_hugetlb_pte(orig);
if (tlb_type != hypervisor &&
pte_dirty(orig)) {
unsigned long paddr, pfn = pte_pfn(orig);
struct address_space *mapping;
struct page *page;
if (!pfn_valid(pfn))
goto no_cache_flush;
page = pfn_to_page(pfn);
if (PageReserved(page))
goto no_cache_flush;
/* A real file page? */
mapping = page_mapping(page);
if (!mapping)
goto no_cache_flush;
paddr = (unsigned long) page_address(page);
if ((paddr ^ vaddr) & (1 << 13))
flush_dcache_page_all(mm, page);
}
no_cache_flush:
if (!fullmm)
tlb_batch_add_one(mm, vaddr, pte_exec(orig), huge);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static void tlb_batch_pmd_scan(struct mm_struct *mm, unsigned long vaddr,
pmd_t pmd)
{
unsigned long end;
pte_t *pte;
pte = pte_offset_map(&pmd, vaddr);
end = vaddr + HPAGE_SIZE;
while (vaddr < end) {
if (pte_val(*pte) & _PAGE_VALID) {
bool exec = pte_exec(*pte);
tlb_batch_add_one(mm, vaddr, exec, false);
}
pte++;
vaddr += PAGE_SIZE;
}
pte_unmap(pte);
}
static void __set_pmd_acct(struct mm_struct *mm, unsigned long addr,
pmd_t orig, pmd_t pmd)
{
if (mm == &init_mm)
return;
if ((pmd_val(pmd) ^ pmd_val(orig)) & _PAGE_PMD_HUGE) {
/*
* Note that this routine only sets pmds for THP pages.
* Hugetlb pages are handled elsewhere. We need to check
* for huge zero page. Huge zero pages are like hugetlb
* pages in that there is no RSS, but there is the need
* for TSB entries. So, huge zero page counts go into
* hugetlb_pte_count.
*/
if (pmd_val(pmd) & _PAGE_PMD_HUGE) {
if (is_huge_zero_page(pmd_page(pmd)))
mm->context.hugetlb_pte_count++;
else
mm->context.thp_pte_count++;
} else {
if (is_huge_zero_page(pmd_page(orig)))
mm->context.hugetlb_pte_count--;
else
mm->context.thp_pte_count--;
}
/* Do not try to allocate the TSB hash table if we
* don't have one already. We have various locks held
* and thus we'll end up doing a GFP_KERNEL allocation
* in an atomic context.
*
* Instead, we let the first TLB miss on a hugepage
* take care of this.
*/
}
if (!pmd_none(orig)) {
addr &= HPAGE_MASK;
if (pmd_trans_huge(orig)) {
pte_t orig_pte = __pte(pmd_val(orig));
bool exec = pte_exec(orig_pte);
tlb_batch_add_one(mm, addr, exec, true);
tlb_batch_add_one(mm, addr + REAL_HPAGE_SIZE, exec,
true);
} else {
tlb_batch_pmd_scan(mm, addr, orig);
}
}
}
void set_pmd_at(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd)
{
pmd_t orig = *pmdp;
*pmdp = pmd;
__set_pmd_acct(mm, addr, orig, pmd);
}
static inline pmd_t pmdp_establish(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp, pmd_t pmd)
{
pmd_t old;
do {
old = *pmdp;
} while (cmpxchg64(&pmdp->pmd, old.pmd, pmd.pmd) != old.pmd);
__set_pmd_acct(vma->vm_mm, address, old, pmd);
return old;
}
/*
* This routine is only called when splitting a THP
*/
pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t old, entry;
entry = __pmd(pmd_val(*pmdp) & ~_PAGE_VALID);
old = pmdp_establish(vma, address, pmdp, entry);
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
/*
* set_pmd_at() will not be called in a way to decrement
* thp_pte_count when splitting a THP, so do it now.
* Sanity check pmd before doing the actual decrement.
*/
if ((pmd_val(entry) & _PAGE_PMD_HUGE) &&
!is_huge_zero_page(pmd_page(entry)))
(vma->vm_mm)->context.thp_pte_count--;
return old;
}
void pgtable_trans_huge_deposit(struct mm_struct *mm, pmd_t *pmdp,
pgtable_t pgtable)
{
struct list_head *lh = (struct list_head *) pgtable;
assert_spin_locked(&mm->page_table_lock);
/* FIFO */
if (!pmd_huge_pte(mm, pmdp))
INIT_LIST_HEAD(lh);
else
list_add(lh, (struct list_head *) pmd_huge_pte(mm, pmdp));
pmd_huge_pte(mm, pmdp) = pgtable;
}
pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp)
{
struct list_head *lh;
pgtable_t pgtable;
assert_spin_locked(&mm->page_table_lock);
/* FIFO */
pgtable = pmd_huge_pte(mm, pmdp);
lh = (struct list_head *) pgtable;
if (list_empty(lh))
pmd_huge_pte(mm, pmdp) = NULL;
else {
pmd_huge_pte(mm, pmdp) = (pgtable_t) lh->next;
list_del(lh);
}
pte_val(pgtable[0]) = 0;
pte_val(pgtable[1]) = 0;
return pgtable;
}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */