From: Tianyu Lan <tiala@xxxxxxxxxxxxx> Rename hv_isolation_type_snp and hv_isolation_type_en_snp() to make them much intuitiver. Suggested-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Signed-off-by: Tianyu Lan <tiala@xxxxxxxxxxxxx> --- This patch is based on the patchset "x86/hyperv: Add AMD sev-snp enlightened guest support on hyperv" https://lore.kernel.org/lkml/ 20230718032304.136888-3-ltykernel@xxxxxxxxx/T/. Change since v1: Add "hv_" prefix to isol_type_snp_paravisor/enlightened() --- arch/x86/hyperv/hv_init.c | 6 +++--- arch/x86/hyperv/ivm.c | 17 +++++++++-------- arch/x86/include/asm/mshyperv.h | 8 ++++---- arch/x86/kernel/cpu/mshyperv.c | 12 ++++++------ drivers/hv/connection.c | 2 +- drivers/hv/hv.c | 16 ++++++++-------- drivers/hv/hv_common.c | 10 +++++----- include/asm-generic/mshyperv.h | 4 ++-- 8 files changed, 38 insertions(+), 37 deletions(-) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index b004370d3b01..3df948c69cff 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -52,7 +52,7 @@ static int hyperv_init_ghcb(void) void *ghcb_va; void **ghcb_base; - if (!hv_isolation_type_snp()) + if (!hv_isol_type_snp_paravisor()) return 0; if (!hv_ghcb_pg) @@ -116,7 +116,7 @@ static int hv_cpu_init(unsigned int cpu) * is blocked to run in Confidential VM. So only decrypt assist * page in non-root partition here. */ - if (*hvp && hv_isolation_type_en_snp()) { + if (*hvp && hv_isol_type_snp_enlightened()) { WARN_ON_ONCE(set_memory_decrypted((unsigned long)(*hvp), 1)); memset(*hvp, 0, PAGE_SIZE); } @@ -453,7 +453,7 @@ void __init hyperv_init(void) goto common_free; } - if (hv_isolation_type_snp()) { + if (hv_isol_type_snp_paravisor()) { /* Negotiate GHCB Version. */ if (!hv_ghcb_negotiate_protocol()) hv_ghcb_terminate(SEV_TERM_SET_GEN, diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index 2eda4e69849d..2548d904e45a 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -591,24 +591,25 @@ bool hv_is_isolation_supported(void) return hv_get_isolation_type() != HV_ISOLATION_TYPE_NONE; } -DEFINE_STATIC_KEY_FALSE(isolation_type_snp); +DEFINE_STATIC_KEY_FALSE(isol_type_snp_paravisor); /* - * hv_isolation_type_snp - Check system runs in the AMD SEV-SNP based + * hv_isol_type_snp_paravisor - Check system runs in the AMD SEV-SNP based * isolation VM. */ -bool hv_isolation_type_snp(void) +bool hv_isol_type_snp_paravisor(void) { - return static_branch_unlikely(&isolation_type_snp); + return static_branch_unlikely(&isol_type_snp_paravisor); } -DEFINE_STATIC_KEY_FALSE(isolation_type_en_snp); +DEFINE_STATIC_KEY_FALSE(isol_type_snp_enlightened); + /* - * hv_isolation_type_en_snp - Check system runs in the AMD SEV-SNP based + * hv_isol_type_snp_enlightened - Check system runs in the AMD SEV-SNP based * isolation enlightened VM. */ -bool hv_isolation_type_en_snp(void) +bool hv_isol_type_snp_enlightened(void) { - return static_branch_unlikely(&isolation_type_en_snp); + return static_branch_unlikely(&isol_type_snp_enlightened); } diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index c5a3c29fad01..e543a5a1b007 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -25,8 +25,8 @@ union hv_ghcb; -DECLARE_STATIC_KEY_FALSE(isolation_type_snp); -DECLARE_STATIC_KEY_FALSE(isolation_type_en_snp); +DECLARE_STATIC_KEY_FALSE(isol_type_snp_paravisor); +DECLARE_STATIC_KEY_FALSE(isol_type_snp_enlightened); typedef int (*hyperv_fill_flush_list_func)( struct hv_guest_mapping_flush_list *flush, @@ -46,7 +46,7 @@ extern void *hv_hypercall_pg; extern u64 hv_current_partition_id; -extern bool hv_isolation_type_en_snp(void); +extern bool hv_isol_type_snp_enlightened(void); extern union hv_ghcb * __percpu *hv_ghcb_pg; @@ -268,7 +268,7 @@ static inline void hv_sev_init_mem_and_cpu(void) {} static int hv_snp_boot_ap(int cpu, unsigned long start_ip) {} #endif -extern bool hv_isolation_type_snp(void); +extern bool hv_isol_type_snp_paravisor(void); static inline bool hv_is_synic_reg(unsigned int reg) { diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index 6ff0b60d30f9..3c61b4b6a5e3 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -66,7 +66,7 @@ u64 hv_get_non_nested_register(unsigned int reg) { u64 value; - if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) + if (hv_is_synic_reg(reg) && hv_isol_type_snp_paravisor()) hv_ghcb_msr_read(reg, &value); else rdmsrl(reg, value); @@ -76,7 +76,7 @@ EXPORT_SYMBOL_GPL(hv_get_non_nested_register); void hv_set_non_nested_register(unsigned int reg, u64 value) { - if (hv_is_synic_reg(reg) && hv_isolation_type_snp()) { + if (hv_is_synic_reg(reg) && hv_isol_type_snp_paravisor()) { hv_ghcb_msr_write(reg, value); /* Write proxy bit via wrmsl instruction */ @@ -300,7 +300,7 @@ static void __init hv_smp_prepare_cpus(unsigned int max_cpus) * Override wakeup_secondary_cpu_64 callback for SEV-SNP * enlightened guest. */ - if (hv_isolation_type_en_snp()) + if (hv_isol_type_snp_enlightened()) apic->wakeup_secondary_cpu_64 = hv_snp_boot_ap; if (!hv_root_partition) @@ -421,9 +421,9 @@ static void __init ms_hyperv_init_platform(void) if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) { - static_branch_enable(&isolation_type_en_snp); + static_branch_enable(&isol_type_snp_enlightened); } else if (hv_get_isolation_type() == HV_ISOLATION_TYPE_SNP) { - static_branch_enable(&isolation_type_snp); + static_branch_enable(&isol_type_snp_paravisor); } } @@ -545,7 +545,7 @@ static void __init ms_hyperv_init_platform(void) if (!(ms_hyperv.features & HV_ACCESS_TSC_INVARIANT)) mark_tsc_unstable("running on Hyper-V"); - if (hv_isolation_type_en_snp()) + if (hv_isol_type_snp_enlightened()) hv_sev_init_mem_and_cpu(); hardlockup_detector_disable(); diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 02b54f85dc60..f86570f3bc1e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -484,7 +484,7 @@ void vmbus_set_event(struct vmbus_channel *channel) ++channel->sig_events; - if (hv_isolation_type_snp()) + if (hv_isol_type_snp_paravisor()) hv_ghcb_hypercall(HVCALL_SIGNAL_EVENT, &channel->sig_event, NULL, sizeof(channel->sig_event)); else diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index ec6e35a0d9bf..3a6e5ecd03d8 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -64,7 +64,7 @@ int hv_post_message(union hv_connection_id connection_id, aligned_msg->payload_size = payload_size; memcpy((void *)aligned_msg->payload, payload, payload_size); - if (hv_isolation_type_snp()) + if (hv_isol_type_snp_paravisor()) status = hv_ghcb_hypercall(HVCALL_POST_MESSAGE, (void *)aligned_msg, NULL, sizeof(*aligned_msg)); @@ -109,7 +109,7 @@ int hv_synic_alloc(void) * Synic message and event pages are allocated by paravisor. * Skip these pages allocation here. */ - if (!hv_isolation_type_snp() && !hv_root_partition) { + if (!hv_isol_type_snp_paravisor() && !hv_root_partition) { hv_cpu->synic_message_page = (void *)get_zeroed_page(GFP_ATOMIC); if (hv_cpu->synic_message_page == NULL) { @@ -125,7 +125,7 @@ int hv_synic_alloc(void) } } - if (hv_isolation_type_en_snp()) { + if (hv_isol_type_snp_enlightened()) { ret = set_memory_decrypted((unsigned long) hv_cpu->synic_message_page, 1); if (ret) { @@ -174,7 +174,7 @@ void hv_synic_free(void) = per_cpu_ptr(hv_context.cpu_context, cpu); /* It's better to leak the page if the encryption fails. */ - if (hv_isolation_type_en_snp()) { + if (hv_isol_type_snp_enlightened()) { if (hv_cpu->synic_message_page) { ret = set_memory_encrypted((unsigned long) hv_cpu->synic_message_page, 1); @@ -221,7 +221,7 @@ void hv_synic_enable_regs(unsigned int cpu) simp.as_uint64 = hv_get_register(HV_REGISTER_SIMP); simp.simp_enabled = 1; - if (hv_isolation_type_snp() || hv_root_partition) { + if (hv_isol_type_snp_paravisor() || hv_root_partition) { /* Mask out vTOM bit. ioremap_cache() maps decrypted */ u64 base = (simp.base_simp_gpa << HV_HYP_PAGE_SHIFT) & ~ms_hyperv.shared_gpa_boundary; @@ -240,7 +240,7 @@ void hv_synic_enable_regs(unsigned int cpu) siefp.as_uint64 = hv_get_register(HV_REGISTER_SIEFP); siefp.siefp_enabled = 1; - if (hv_isolation_type_snp() || hv_root_partition) { + if (hv_isol_type_snp_paravisor() || hv_root_partition) { /* Mask out vTOM bit. ioremap_cache() maps decrypted */ u64 base = (siefp.base_siefp_gpa << HV_HYP_PAGE_SHIFT) & ~ms_hyperv.shared_gpa_boundary; @@ -323,7 +323,7 @@ void hv_synic_disable_regs(unsigned int cpu) * addresses. */ simp.simp_enabled = 0; - if (hv_isolation_type_snp() || hv_root_partition) { + if (hv_isol_type_snp_paravisor() || hv_root_partition) { iounmap(hv_cpu->synic_message_page); hv_cpu->synic_message_page = NULL; } else { @@ -335,7 +335,7 @@ void hv_synic_disable_regs(unsigned int cpu) siefp.as_uint64 = hv_get_register(HV_REGISTER_SIEFP); siefp.siefp_enabled = 0; - if (hv_isolation_type_snp() || hv_root_partition) { + if (hv_isol_type_snp_paravisor() || hv_root_partition) { iounmap(hv_cpu->synic_event_page); hv_cpu->synic_event_page = NULL; } else { diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 2d43ba2bc925..e205f85709ad 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -381,7 +381,7 @@ int hv_common_cpu_init(unsigned int cpu) *outputarg = (char *)(*inputarg) + HV_HYP_PAGE_SIZE; } - if (hv_isolation_type_en_snp()) { + if (hv_isol_type_snp_enlightened()) { ret = set_memory_decrypted((unsigned long)*inputarg, pgcount); if (ret) { kfree(*inputarg); @@ -509,17 +509,17 @@ bool __weak hv_is_isolation_supported(void) } EXPORT_SYMBOL_GPL(hv_is_isolation_supported); -bool __weak hv_isolation_type_snp(void) +bool __weak hv_isol_type_snp_paravisor(void) { return false; } -EXPORT_SYMBOL_GPL(hv_isolation_type_snp); +EXPORT_SYMBOL_GPL(hv_isol_type_snp_paravisor); -bool __weak hv_isolation_type_en_snp(void) +bool __weak hv_isol_type_snp_enlightened(void) { return false; } -EXPORT_SYMBOL_GPL(hv_isolation_type_en_snp); +EXPORT_SYMBOL_GPL(hv_isol_type_snp_enlightened); void __weak hv_setup_vmbus_handler(void (*handler)(void)) { diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index f73a044ecaa7..b8f2b48b640f 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -64,7 +64,7 @@ extern void * __percpu *hyperv_pcpu_output_arg; extern u64 hv_do_hypercall(u64 control, void *inputaddr, void *outputaddr); extern u64 hv_do_fast_hypercall8(u16 control, u64 input8); -extern bool hv_isolation_type_snp(void); +extern bool hv_isol_type_snp_paravisor(void); /* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */ static inline int hv_result(u64 status) @@ -279,7 +279,7 @@ bool hv_is_hyperv_initialized(void); bool hv_is_hibernation_supported(void); enum hv_isolation_type hv_get_isolation_type(void); bool hv_is_isolation_supported(void); -bool hv_isolation_type_snp(void); +bool hv_isol_type_snp_paravisor(void); u64 hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size); void hyperv_cleanup(void); bool hv_query_ext_cap(u64 cap_query); -- 2.25.1
