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kernel-49/arch/x86/kvm/pmu_amd.c
Greg Kroah-Hartman f95d85c34b Merge 4.9.311 into android-4.9-q
Changes in 4.9.311
	USB: serial: pl2303: add IBM device IDs
	USB: serial: simple: add Nokia phone driver
	netdevice: add the case if dev is NULL
	virtio_console: break out of buf poll on remove
	ethernet: sun: Free the coherent when failing in probing
	af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register
	block: Add a helper to validate the block size
	virtio-blk: Use blk_validate_block_size() to validate block size
	USB: usb-storage: Fix use of bitfields for hardware data in ene_ub6250.c
	coresight: Fix TRCCONFIGR.QE sysfs interface
	iio: inkern: apply consumer scale on IIO_VAL_INT cases
	iio: inkern: make a best effort on offset calculation
	clk: uniphier: Fix fixed-rate initialization
	ptrace: Check PTRACE_O_SUSPEND_SECCOMP permission on PTRACE_SEIZE
	SUNRPC: avoid race between mod_timer() and del_timer_sync()
	NFSD: prevent underflow in nfssvc_decode_writeargs()
	can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path
	jffs2: fix use-after-free in jffs2_clear_xattr_subsystem
	jffs2: fix memory leak in jffs2_do_mount_fs
	jffs2: fix memory leak in jffs2_scan_medium
	mm/pages_alloc.c: don't create ZONE_MOVABLE beyond the end of a node
	mempolicy: mbind_range() set_policy() after vma_merge()
	scsi: libsas: Fix sas_ata_qc_issue() handling of NCQ NON DATA commands
	Revert "Input: clear BTN_RIGHT/MIDDLE on buttonpads"
	ALSA: cs4236: fix an incorrect NULL check on list iterator
	drivers: hamradio: 6pack: fix UAF bug caused by mod_timer()
	video: fbdev: sm712fb: Fix crash in smtcfb_read()
	video: fbdev: atari: Atari 2 bpp (STe) palette bugfix
	ARM: dts: exynos: fix UART3 pins configuration in Exynos5250
	ARM: dts: exynos: add missing HDMI supplies on SMDK5250
	ARM: dts: exynos: add missing HDMI supplies on SMDK5420
	carl9170: fix missing bit-wise or operator for tx_params
	thermal: int340x: Increase bitmap size
	lib/raid6/test: fix multiple definition linking error
	DEC: Limit PMAX memory probing to R3k systems
	media: davinci: vpif: fix unbalanced runtime PM get
	brcmfmac: firmware: Allocate space for default boardrev in nvram
	brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio
	PCI: pciehp: Clear cmd_busy bit in polling mode
	crypto: authenc - Fix sleep in atomic context in decrypt_tail
	crypto: mxs-dcp - Fix scatterlist processing
	spi: tegra114: Add missing IRQ check in tegra_spi_probe
	selftests/x86: Add validity check and allow field splitting
	hwmon: (pmbus) Add mutex to regulator ops
	hwmon: (sch56xx-common) Replace WDOG_ACTIVE with WDOG_HW_RUNNING
	PM: hibernate: fix __setup handler error handling
	PM: suspend: fix return value of __setup handler
	crypto: vmx - add missing dependencies
	crypto: ccp - ccp_dmaengine_unregister release dma channels
	hwmon: (pmbus) Add Vin unit off handling
	clocksource: acpi_pm: fix return value of __setup handler
	sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa
	perf/core: Fix address filter parser for multiple filters
	perf/x86/intel/pt: Fix address filter config for 32-bit kernel
	video: fbdev: smscufx: Fix null-ptr-deref in ufx_usb_probe()
	video: fbdev: fbcvt.c: fix printing in fb_cvt_print_name()
	ARM: dts: qcom: ipq4019: fix sleep clock
	soc: ti: wkup_m3_ipc: Fix IRQ check in wkup_m3_ipc_probe
	media: usb: go7007: s2250-board: fix leak in probe()
	ASoC: ti: davinci-i2s: Add check for clk_enable()
	ALSA: spi: Add check for clk_enable()
	arm64: dts: ns2: Fix spi-cpol and spi-cpha property
	arm64: dts: broadcom: Fix sata nodename
	printk: fix return value of printk.devkmsg __setup handler
	ASoC: mxs-saif: Handle errors for clk_enable
	ASoC: atmel_ssc_dai: Handle errors for clk_enable
	memory: emif: Add check for setup_interrupts
	memory: emif: check the pointer temp in get_device_details()
	ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction
	ASoC: atmel: Add missing of_node_put() in at91sam9g20ek_audio_probe
	ASoC: wm8350: Handle error for wm8350_register_irq
	ASoC: fsi: Add check for clk_enable
	video: fbdev: omapfb: Add missing of_node_put() in dvic_probe_of
	ASoC: dmaengine: do not use a NULL prepare_slave_config() callback
	ASoC: mxs: Fix error handling in mxs_sgtl5000_probe
	ASoC: imx-es8328: Fix error return code in imx_es8328_probe()
	mtd: onenand: Check for error irq
	drm/edid: Don't clear formats if using deep color
	ath9k_htc: fix uninit value bugs
	ray_cs: Check ioremap return value
	power: supply: ab8500: Fix memory leak in ab8500_fg_sysfs_init
	HID: i2c-hid: fix GET/SET_REPORT for unnumbered reports
	iwlwifi: Fix -EIO error code that is never returned
	scsi: pm8001: Fix command initialization in pm80XX_send_read_log()
	scsi: pm8001: Fix command initialization in pm8001_chip_ssp_tm_req()
	scsi: pm8001: Fix payload initialization in pm80xx_set_thermal_config()
	scsi: pm8001: Fix abort all task initialization
	TOMOYO: fix __setup handlers return values
	ext2: correct max file size computing
	drm/tegra: Fix reference leak in tegra_dsi_ganged_probe
	KVM: x86: Fix emulation in writing cr8
	KVM: x86/emulator: Defer not-present segment check in __load_segment_descriptor()
	i2c: xiic: Make bus names unique
	power: supply: wm8350-power: Handle error for wm8350_register_irq
	power: supply: wm8350-power: Add missing free in free_charger_irq
	powerpc/sysdev: fix incorrect use to determine if list is empty
	mfd: mc13xxx: Add check for mc13xxx_irq_request
	MIPS: RB532: fix return value of __setup handler
	USB: storage: ums-realtek: fix error code in rts51x_read_mem()
	af_netlink: Fix shift out of bounds in group mask calculation
	i2c: mux: demux-pinctrl: do not deactivate a master that is not active
	mfd: asic3: Add missing iounmap() on error asic3_mfd_probe
	mxser: fix xmit_buf leak in activate when LSR == 0xff
	pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add()
	iio: adc: Add check for devm_request_threaded_irq
	clk: qcom: clk-rcg2: Update the frac table for pixel clock
	remoteproc: qcom_wcnss: Add missing of_node_put() in wcnss_alloc_memory_region
	clk: loongson1: Terminate clk_div_table with sentinel element
	clk: clps711x: Terminate clk_div_table with sentinel element
	clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver
	NFS: remove unneeded check in decode_devicenotify_args()
	pinctrl: mediatek: Fix missing of_node_put() in mtk_pctrl_init
	pinctrl: nomadik: Add missing of_node_put() in nmk_pinctrl_probe
	pinctrl/rockchip: Add missing of_node_put() in rockchip_pinctrl_probe
	tty: hvc: fix return value of __setup handler
	kgdboc: fix return value of __setup handler
	kgdbts: fix return value of __setup handler
	jfs: fix divide error in dbNextAG
	netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options
	net: phy: broadcom: Fix brcm_fet_config_init()
	qlcnic: dcb: default to returning -EOPNOTSUPP
	net/x25: Fix null-ptr-deref caused by x25_disconnect
	selinux: use correct type for context length
	loop: use sysfs_emit() in the sysfs xxx show()
	Fix incorrect type in assignment of ipv6 port for audit
	irqchip/nvic: Release nvic_base upon failure
	ACPICA: Avoid walking the ACPI Namespace if it is not there
	ACPI/APEI: Limit printable size of BERT table data
	PM: core: keep irq flags in device_pm_check_callbacks()
	spi: tegra20: Use of_device_get_match_data()
	ext4: don't BUG if someone dirty pages without asking ext4 first
	ntfs: add sanity check on allocation size
	video: fbdev: nvidiafb: Use strscpy() to prevent buffer overflow
	video: fbdev: w100fb: Reset global state
	video: fbdev: cirrusfb: check pixclock to avoid divide by zero
	video: fbdev: omapfb: acx565akm: replace snprintf with sysfs_emit
	ARM: dts: qcom: fix gic_irq_domain_translate warnings for msm8960
	ARM: dts: bcm2837: Add the missing L1/L2 cache information
	video: fbdev: omapfb: panel-dsi-cm: Use sysfs_emit() instead of snprintf()
	video: fbdev: omapfb: panel-tpo-td043mtea1: Use sysfs_emit() instead of snprintf()
	ASoC: soc-core: skip zero num_dai component in searching dai name
	media: cx88-mpeg: clear interrupt status register before streaming video
	ARM: tegra: tamonten: Fix I2C3 pad setting
	ARM: mmp: Fix failure to remove sram device
	video: fbdev: sm712fb: Fix crash in smtcfb_write()
	media: hdpvr: initialize dev->worker at hdpvr_register_videodev
	mmc: host: Return an error when ->enable_sdio_irq() ops is missing
	scsi: qla2xxx: Fix incorrect reporting of task management failure
	KVM: Prevent module exit until all VMs are freed
	ubifs: Add missing iput if do_tmpfile() failed in rename whiteout
	ubifs: setflags: Make dirtied_ino_d 8 bytes aligned
	gfs2: Make sure FITRIM minlen is rounded up to fs block size
	pinctrl: pinconf-generic: Print arguments for bias-pull-*
	ACPI: CPPC: Avoid out of bounds access when parsing _CPC data
	mm/mmap: return 1 from stack_guard_gap __setup() handler
	mm/memcontrol: return 1 from cgroup.memory __setup() handler
	ubi: fastmap: Return error code if memory allocation fails in add_aeb()
	ASoC: topology: Allow TLV control to be either read or write
	ARM: dts: spear1340: Update serial node properties
	ARM: dts: spear13xx: Update SPI dma properties
	openvswitch: Fixed nd target mask field in the flow dump.
	KVM: x86: Forbid VMM to set SYNIC/STIMER MSRs when SynIC wasn't activated
	rtc: wm8350: Handle error for wm8350_register_irq
	ARM: 9187/1: JIVE: fix return value of __setup handler
	KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs
	ath5k: fix OOB in ath5k_eeprom_read_pcal_info_5111
	ptp: replace snprintf with sysfs_emit
	powerpc: dts: t104xrdb: fix phy type for FMAN 4/5
	scsi: mvsas: Replace snprintf() with sysfs_emit()
	scsi: bfa: Replace snprintf() with sysfs_emit()
	iommu/arm-smmu-v3: fix event handling soft lockup
	dm ioctl: prevent potential spectre v1 gadget
	scsi: pm8001: Fix pm8001_mpi_task_abort_resp()
	scsi: aha152x: Fix aha152x_setup() __setup handler return value
	bnxt_en: Eliminate unintended link toggle during FW reset
	MIPS: fix fortify panic when copying asm exception handlers
	scsi: libfc: Fix use after free in fc_exch_abts_resp()
	usb: dwc3: omap: fix "unbalanced disables for smps10_out1" on omap5evm
	xtensa: fix DTC warning unit_address_format
	Bluetooth: Fix use after free in hci_send_acl
	init/main.c: return 1 from handled __setup() functions
	w1: w1_therm: fixes w1_seq for ds28ea00 sensors
	SUNRPC/call_alloc: async tasks mustn't block waiting for memory
	serial: samsung_tty: do not unlock port->lock for uart_write_wakeup()
	virtio_console: eliminate anonymous module_init & module_exit
	jfs: prevent NULL deref in diFree
	mm: fix race between MADV_FREE reclaim and blkdev direct IO read
	scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one()
	net: stmmac: Fix unset max_speed difference between DT and non-DT platforms
	drm/imx: Fix memory leak in imx_pd_connector_get_modes
	drbd: Fix five use after free bugs in get_initial_state
	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)
	mm/mempolicy: fix mpol_new leak in shared_policy_replace
	x86/pm: Save the MSR validity status at context setup
	x86/speculation: Restore speculation related MSRs during S3 resume
	arm64: patch_text: Fixup last cpu should be master
	tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts
	dmaengine: Revert "dmaengine: shdma: Fix runtime PM imbalance on error"
	mm: don't skip swap entry even if zap_details specified
	arm64: module: remove (NOLOAD) from linker script
	xfrm: policy: match with both mark and mask on user interfaces
	veth: Ensure eth header is in skb's linear part
	net: ethernet: stmmac: fix altr_tse_pcs function when using a fixed-link
	nfc: nci: add flush_workqueue to prevent uaf
	cifs: potential buffer overflow in handling symlinks
	drm/amdkfd: Check for potential null return of kmalloc_array()
	scsi: ibmvscsis: Increase INITIAL_SRP_LIMIT to 1024
	net: micrel: fix KS8851_MLL Kconfig
	gpu: ipu-v3: Fix dev_dbg frequency output
	scsi: mvsas: Add PCI ID of RocketRaid 2640
	drivers: net: slip: fix NPD bug in sl_tx_timeout()
	mm, page_alloc: fix build_zonerefs_node()
	mm: kmemleak: take a full lowmem check in kmemleak_*_phys()
	ALSA: pcm: Test for "silence" field in struct "pcm_format_data"
	ARM: davinci: da850-evm: Avoid NULL pointer dereference
	smp: Fix offline cpu check in flush_smp_call_function_queue()
	i2c: pasemi: Wait for write xfers to finish
	gcc-plugins: latent_entropy: use /dev/urandom
	Linux 4.9.311

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia8f55c5ae2f0eb71b0893d8271a10dfd3c78b3b8
2022-04-25 16:25:23 +03:00

204 lines
5.0 KiB
C

/*
* KVM PMU support for AMD
*
* Copyright 2015, Red Hat, Inc. and/or its affiliates.
*
* Author:
* Wei Huang <wei@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
* Implementation is based on pmu_intel.c file
*/
#include <linux/types.h>
#include <linux/kvm_host.h>
#include <linux/perf_event.h>
#include "x86.h"
#include "cpuid.h"
#include "lapic.h"
#include "pmu.h"
/* duplicated from amd_perfmon_event_map, K7 and above should work. */
static struct kvm_event_hw_type_mapping amd_event_mapping[] = {
[0] = { 0x76, 0x00, PERF_COUNT_HW_CPU_CYCLES },
[1] = { 0xc0, 0x00, PERF_COUNT_HW_INSTRUCTIONS },
[2] = { 0x7d, 0x07, PERF_COUNT_HW_CACHE_REFERENCES },
[3] = { 0x7e, 0x07, PERF_COUNT_HW_CACHE_MISSES },
[4] = { 0xc2, 0x00, PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
[5] = { 0xc3, 0x00, PERF_COUNT_HW_BRANCH_MISSES },
[6] = { 0xd0, 0x00, PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
[7] = { 0xd1, 0x00, PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
};
static unsigned amd_find_arch_event(struct kvm_pmu *pmu,
u8 event_select,
u8 unit_mask)
{
int i;
for (i = 0; i < ARRAY_SIZE(amd_event_mapping); i++)
if (amd_event_mapping[i].eventsel == event_select
&& amd_event_mapping[i].unit_mask == unit_mask)
break;
if (i == ARRAY_SIZE(amd_event_mapping))
return PERF_COUNT_HW_MAX;
return amd_event_mapping[i].event_type;
}
/* return PERF_COUNT_HW_MAX as AMD doesn't have fixed events */
static unsigned amd_find_fixed_event(int idx)
{
return PERF_COUNT_HW_MAX;
}
/* check if a PMC is enabled by comparing it against global_ctrl bits. Because
* AMD CPU doesn't have global_ctrl MSR, all PMCs are enabled (return TRUE).
*/
static bool amd_pmc_is_enabled(struct kvm_pmc *pmc)
{
return true;
}
static struct kvm_pmc *amd_pmc_idx_to_pmc(struct kvm_pmu *pmu, int pmc_idx)
{
return get_gp_pmc(pmu, MSR_K7_EVNTSEL0 + pmc_idx, MSR_K7_EVNTSEL0);
}
/* returns 0 if idx's corresponding MSR exists; otherwise returns 1. */
static int amd_is_valid_msr_idx(struct kvm_vcpu *vcpu, unsigned idx)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
idx &= ~(3u << 30);
return (idx >= pmu->nr_arch_gp_counters);
}
/* idx is the ECX register of RDPMC instruction */
static struct kvm_pmc *amd_msr_idx_to_pmc(struct kvm_vcpu *vcpu, unsigned idx)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *counters;
idx &= ~(3u << 30);
if (idx >= pmu->nr_arch_gp_counters)
return NULL;
counters = pmu->gp_counters;
return &counters[idx];
}
static bool amd_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
int ret = false;
ret = get_gp_pmc(pmu, msr, MSR_K7_PERFCTR0) ||
get_gp_pmc(pmu, msr, MSR_K7_EVNTSEL0);
return ret;
}
static int amd_pmu_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc;
/* MSR_K7_PERFCTRn */
pmc = get_gp_pmc(pmu, msr, MSR_K7_PERFCTR0);
if (pmc) {
*data = pmc_read_counter(pmc);
return 0;
}
/* MSR_K7_EVNTSELn */
pmc = get_gp_pmc(pmu, msr, MSR_K7_EVNTSEL0);
if (pmc) {
*data = pmc->eventsel;
return 0;
}
return 1;
}
static int amd_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc;
u32 msr = msr_info->index;
u64 data = msr_info->data;
/* MSR_K7_PERFCTRn */
pmc = get_gp_pmc(pmu, msr, MSR_K7_PERFCTR0);
if (pmc) {
pmc->counter += data - pmc_read_counter(pmc);
return 0;
}
/* MSR_K7_EVNTSELn */
pmc = get_gp_pmc(pmu, msr, MSR_K7_EVNTSEL0);
if (pmc) {
data &= ~pmu->reserved_bits;
if (data != pmc->eventsel)
reprogram_gp_counter(pmc, data);
return 0;
}
return 1;
}
static void amd_pmu_refresh(struct kvm_vcpu *vcpu)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
pmu->nr_arch_gp_counters = AMD64_NUM_COUNTERS;
pmu->counter_bitmask[KVM_PMC_GP] = ((u64)1 << 48) - 1;
pmu->reserved_bits = 0xffffffff00200000ull;
/* not applicable to AMD; but clean them to prevent any fall out */
pmu->counter_bitmask[KVM_PMC_FIXED] = 0;
pmu->nr_arch_fixed_counters = 0;
pmu->version = 0;
pmu->global_status = 0;
}
static void amd_pmu_init(struct kvm_vcpu *vcpu)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
int i;
for (i = 0; i < AMD64_NUM_COUNTERS ; i++) {
pmu->gp_counters[i].type = KVM_PMC_GP;
pmu->gp_counters[i].vcpu = vcpu;
pmu->gp_counters[i].idx = i;
}
}
static void amd_pmu_reset(struct kvm_vcpu *vcpu)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
int i;
for (i = 0; i < AMD64_NUM_COUNTERS; i++) {
struct kvm_pmc *pmc = &pmu->gp_counters[i];
pmc_stop_counter(pmc);
pmc->counter = pmc->eventsel = 0;
}
}
struct kvm_pmu_ops amd_pmu_ops = {
.find_arch_event = amd_find_arch_event,
.find_fixed_event = amd_find_fixed_event,
.pmc_is_enabled = amd_pmc_is_enabled,
.pmc_idx_to_pmc = amd_pmc_idx_to_pmc,
.msr_idx_to_pmc = amd_msr_idx_to_pmc,
.is_valid_msr_idx = amd_is_valid_msr_idx,
.is_valid_msr = amd_is_valid_msr,
.get_msr = amd_pmu_get_msr,
.set_msr = amd_pmu_set_msr,
.refresh = amd_pmu_refresh,
.init = amd_pmu_init,
.reset = amd_pmu_reset,
};