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Drivers: hv: Cosmetic changes for hv.c and balloon.c
Fix issues reported by checkpatch.pl script in hv.c and balloon.c - Remove unnecessary parentheses - Remove extra newlines - Remove extra spaces - Add spaces between comparison operators - Remove comparison with NULL in if statements No functional changes intended Signed-off-by: Aditya Nagesh <adityanagesh@linux.microsoft.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/1717152521-6439-1-git-send-email-adityanagesh@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1717152521-6439-1-git-send-email-adityanagesh@linux.microsoft.com>
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@ -111,7 +111,7 @@ int hv_synic_alloc(void)
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hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask),
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GFP_KERNEL);
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if (hv_context.hv_numa_map == NULL) {
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if (!hv_context.hv_numa_map) {
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pr_err("Unable to allocate NUMA map\n");
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goto err;
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}
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@ -120,11 +120,11 @@ int hv_synic_alloc(void)
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hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu);
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tasklet_init(&hv_cpu->msg_dpc,
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vmbus_on_msg_dpc, (unsigned long) hv_cpu);
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vmbus_on_msg_dpc, (unsigned long)hv_cpu);
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if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
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hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC);
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if (hv_cpu->post_msg_page == NULL) {
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if (!hv_cpu->post_msg_page) {
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pr_err("Unable to allocate post msg page\n");
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goto err;
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}
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@ -147,14 +147,14 @@ int hv_synic_alloc(void)
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if (!ms_hyperv.paravisor_present && !hv_root_partition) {
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hv_cpu->synic_message_page =
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(void *)get_zeroed_page(GFP_ATOMIC);
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if (hv_cpu->synic_message_page == NULL) {
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if (!hv_cpu->synic_message_page) {
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pr_err("Unable to allocate SYNIC message page\n");
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goto err;
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}
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hv_cpu->synic_event_page =
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(void *)get_zeroed_page(GFP_ATOMIC);
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if (hv_cpu->synic_event_page == NULL) {
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if (!hv_cpu->synic_event_page) {
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pr_err("Unable to allocate SYNIC event page\n");
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free_page((unsigned long)hv_cpu->synic_message_page);
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@ -203,14 +203,13 @@ err:
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return ret;
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}
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void hv_synic_free(void)
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{
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int cpu, ret;
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for_each_present_cpu(cpu) {
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struct hv_per_cpu_context *hv_cpu
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= per_cpu_ptr(hv_context.cpu_context, cpu);
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struct hv_per_cpu_context *hv_cpu =
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per_cpu_ptr(hv_context.cpu_context, cpu);
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/* It's better to leak the page if the encryption fails. */
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if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
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@ -262,8 +261,8 @@ void hv_synic_free(void)
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*/
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void hv_synic_enable_regs(unsigned int cpu)
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{
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struct hv_per_cpu_context *hv_cpu
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= per_cpu_ptr(hv_context.cpu_context, cpu);
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struct hv_per_cpu_context *hv_cpu =
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per_cpu_ptr(hv_context.cpu_context, cpu);
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union hv_synic_simp simp;
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union hv_synic_siefp siefp;
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union hv_synic_sint shared_sint;
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@ -277,8 +276,8 @@ void hv_synic_enable_regs(unsigned int cpu)
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/* Mask out vTOM bit. ioremap_cache() maps decrypted */
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u64 base = (simp.base_simp_gpa << HV_HYP_PAGE_SHIFT) &
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~ms_hyperv.shared_gpa_boundary;
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hv_cpu->synic_message_page
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= (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
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hv_cpu->synic_message_page =
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(void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
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if (!hv_cpu->synic_message_page)
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pr_err("Fail to map synic message page.\n");
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} else {
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@ -296,8 +295,8 @@ void hv_synic_enable_regs(unsigned int cpu)
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/* Mask out vTOM bit. ioremap_cache() maps decrypted */
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u64 base = (siefp.base_siefp_gpa << HV_HYP_PAGE_SHIFT) &
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~ms_hyperv.shared_gpa_boundary;
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hv_cpu->synic_event_page
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= (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
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hv_cpu->synic_event_page =
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(void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
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if (!hv_cpu->synic_event_page)
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pr_err("Fail to map synic event page.\n");
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} else {
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@ -348,8 +347,8 @@ int hv_synic_init(unsigned int cpu)
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*/
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void hv_synic_disable_regs(unsigned int cpu)
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{
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struct hv_per_cpu_context *hv_cpu
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= per_cpu_ptr(hv_context.cpu_context, cpu);
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struct hv_per_cpu_context *hv_cpu =
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per_cpu_ptr(hv_context.cpu_context, cpu);
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union hv_synic_sint shared_sint;
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union hv_synic_simp simp;
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union hv_synic_siefp siefp;
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@ -42,8 +42,6 @@
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* Begin protocol definitions.
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*/
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/*
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* Protocol versions. The low word is the minor version, the high word the major
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* version.
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@ -72,8 +70,6 @@ enum {
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DYNMEM_PROTOCOL_VERSION_CURRENT = DYNMEM_PROTOCOL_VERSION_WIN10
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};
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/*
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* Message Types
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*/
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@ -102,7 +98,6 @@ enum dm_message_type {
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DM_VERSION_1_MAX = 12
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};
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/*
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* Structures defining the dynamic memory management
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* protocol.
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@ -116,7 +111,6 @@ union dm_version {
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__u32 version;
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} __packed;
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union dm_caps {
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struct {
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__u64 balloon:1;
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@ -149,8 +143,6 @@ union dm_mem_page_range {
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__u64 page_range;
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} __packed;
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/*
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* The header for all dynamic memory messages:
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*
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@ -175,7 +167,6 @@ struct dm_message {
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__u8 data[]; /* enclosed message */
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} __packed;
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/*
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* Specific message types supporting the dynamic memory protocol.
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*/
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@ -272,7 +263,6 @@ struct dm_status {
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__u32 io_diff;
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} __packed;
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/*
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* Message to ask the guest to allocate memory - balloon up message.
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* This message is sent from the host to the guest. The guest may not be
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@ -287,14 +277,13 @@ struct dm_balloon {
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__u32 reservedz;
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} __packed;
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/*
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* Balloon response message; this message is sent from the guest
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* to the host in response to the balloon message.
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*
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* reservedz: Reserved; must be set to zero.
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* more_pages: If FALSE, this is the last message of the transaction.
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* if TRUE there will atleast one more message from the guest.
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* if TRUE there will be at least one more message from the guest.
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*
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* range_count: The number of ranges in the range array.
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*
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@ -315,7 +304,7 @@ struct dm_balloon_response {
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* to the guest to give guest more memory.
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*
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* more_pages: If FALSE, this is the last message of the transaction.
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* if TRUE there will atleast one more message from the guest.
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* if TRUE there will be at least one more message from the guest.
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*
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* reservedz: Reserved; must be set to zero.
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*
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@ -343,7 +332,6 @@ struct dm_unballoon_response {
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struct dm_header hdr;
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} __packed;
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/*
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* Hot add request message. Message sent from the host to the guest.
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*
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@ -391,7 +379,6 @@ enum dm_info_type {
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MAX_INFO_TYPE
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};
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/*
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* Header for the information message.
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*/
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@ -481,10 +468,10 @@ static unsigned long last_post_time;
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static int hv_hypercall_multi_failure;
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module_param(hot_add, bool, (S_IRUGO | S_IWUSR));
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module_param(hot_add, bool, 0644);
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MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
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module_param(pressure_report_delay, uint, (S_IRUGO | S_IWUSR));
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module_param(pressure_report_delay, uint, 0644);
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MODULE_PARM_DESC(pressure_report_delay, "Delay in secs in reporting pressure");
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static atomic_t trans_id = ATOMIC_INIT(0);
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@ -503,7 +490,6 @@ enum hv_dm_state {
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DM_INIT_ERROR
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};
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static __u8 recv_buffer[HV_HYP_PAGE_SIZE];
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static __u8 balloon_up_send_buffer[HV_HYP_PAGE_SIZE];
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@ -599,12 +585,12 @@ static inline bool has_pfn_is_backed(struct hv_hotadd_state *has,
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struct hv_hotadd_gap *gap;
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/* The page is not backed. */
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if ((pfn < has->covered_start_pfn) || (pfn >= has->covered_end_pfn))
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if (pfn < has->covered_start_pfn || pfn >= has->covered_end_pfn)
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return false;
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/* Check for gaps. */
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list_for_each_entry(gap, &has->gap_list, list) {
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if ((pfn >= gap->start_pfn) && (pfn < gap->end_pfn))
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if (pfn >= gap->start_pfn && pfn < gap->end_pfn)
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return false;
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}
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@ -784,7 +770,7 @@ static void hv_online_page(struct page *pg, unsigned int order)
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guard(spinlock_irqsave)(&dm_device.ha_lock);
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list_for_each_entry(has, &dm_device.ha_region_list, list) {
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/* The page belongs to a different HAS. */
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if ((pfn < has->start_pfn) ||
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if (pfn < has->start_pfn ||
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(pfn + (1UL << order) > has->end_pfn))
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continue;
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@ -893,10 +879,9 @@ static unsigned long handle_pg_range(unsigned long pg_start,
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if (start_pfn > has->start_pfn &&
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online_section_nr(pfn_to_section_nr(start_pfn)))
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hv_bring_pgs_online(has, start_pfn, pgs_ol);
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}
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if ((has->ha_end_pfn < has->end_pfn) && (pfn_cnt > 0)) {
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if (has->ha_end_pfn < has->end_pfn && pfn_cnt > 0) {
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/*
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* We have some residual hot add range
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* that needs to be hot added; hot add
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@ -999,7 +984,7 @@ static void hot_add_req(struct work_struct *dummy)
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rg_start = dm->ha_wrk.ha_region_range.finfo.start_page;
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rg_sz = dm->ha_wrk.ha_region_range.finfo.page_cnt;
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if ((rg_start == 0) && (!dm->host_specified_ha_region)) {
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if (rg_start == 0 && !dm->host_specified_ha_region) {
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/*
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* The host has not specified the hot-add region.
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* Based on the hot-add page range being specified,
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@ -1191,7 +1176,6 @@ static void post_status(struct hv_dynmem_device *dm)
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sizeof(struct dm_status),
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(unsigned long)NULL,
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VM_PKT_DATA_INBAND, 0);
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}
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static void free_balloon_pages(struct hv_dynmem_device *dm,
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@ -1211,8 +1195,6 @@ static void free_balloon_pages(struct hv_dynmem_device *dm,
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}
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}
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static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
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unsigned int num_pages,
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struct dm_balloon_response *bl_resp,
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@ -1258,7 +1240,6 @@ static unsigned int alloc_balloon_pages(struct hv_dynmem_device *dm,
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page_to_pfn(pg);
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bl_resp->range_array[i].finfo.page_cnt = alloc_unit;
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bl_resp->hdr.size += sizeof(union dm_mem_page_range);
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}
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return i * alloc_unit;
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@ -1351,7 +1332,6 @@ static void balloon_up(struct work_struct *dummy)
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done = true;
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}
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}
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}
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static void balloon_down(struct hv_dynmem_device *dm,
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@ -1394,8 +1374,7 @@ static int dm_thread_func(void *dm_dev)
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struct hv_dynmem_device *dm = dm_dev;
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while (!kthread_should_stop()) {
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wait_for_completion_interruptible_timeout(
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&dm_device.config_event, 1*HZ);
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wait_for_completion_interruptible_timeout(&dm_device.config_event, 1 * HZ);
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/*
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* The host expects us to post information on the memory
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* pressure every second.
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@ -1419,7 +1398,6 @@ static int dm_thread_func(void *dm_dev)
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return 0;
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}
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static void version_resp(struct hv_dynmem_device *dm,
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struct dm_version_response *vresp)
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{
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@ -1583,10 +1561,8 @@ static void balloon_onchannelcallback(void *context)
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default:
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pr_warn_ratelimited("Unhandled message: type: %d\n", dm_hdr->type);
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}
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}
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}
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#define HV_LARGE_REPORTING_ORDER 9
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@ -1628,7 +1604,7 @@ static int hv_free_page_report(struct page_reporting_dev_info *pr_dev_info,
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*/
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/* page reporting for pages 2MB or higher */
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if (order >= HV_LARGE_REPORTING_ORDER ) {
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if (order >= HV_LARGE_REPORTING_ORDER) {
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range->page.largepage = 1;
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range->page_size = HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB;
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range->base_large_pfn = page_to_hvpfn(
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@ -1642,14 +1618,12 @@ static int hv_free_page_report(struct page_reporting_dev_info *pr_dev_info,
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range->page.additional_pages =
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(sg->length / HV_HYP_PAGE_SIZE) - 1;
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}
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}
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status = hv_do_rep_hypercall(HV_EXT_CALL_MEMORY_HEAT_HINT, nents, 0,
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hint, NULL);
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local_irq_restore(flags);
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if (!hv_result_success(status)) {
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pr_err("Cold memory discard hypercall failed with status %llx\n",
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status);
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if (hv_hypercall_multi_failure > 0)
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@ -1775,7 +1749,7 @@ static int balloon_connect_vsp(struct hv_device *dev)
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if (ret)
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goto out;
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t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
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t = wait_for_completion_timeout(&dm_device.host_event, 5 * HZ);
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if (t == 0) {
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ret = -ETIMEDOUT;
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goto out;
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@ -1833,7 +1807,7 @@ static int balloon_connect_vsp(struct hv_device *dev)
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if (ret)
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goto out;
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t = wait_for_completion_timeout(&dm_device.host_event, 5*HZ);
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t = wait_for_completion_timeout(&dm_device.host_event, 5 * HZ);
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if (t == 0) {
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ret = -ETIMEDOUT;
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goto out;
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@ -2095,7 +2069,6 @@ static int balloon_suspend(struct hv_device *hv_dev)
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tasklet_enable(&hv_dev->channel->callback_event);
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return 0;
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}
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static int balloon_resume(struct hv_device *dev)
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@ -2154,7 +2127,6 @@ static struct hv_driver balloon_drv = {
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static int __init init_balloon_drv(void)
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{
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return vmbus_driver_register(&balloon_drv);
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}
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