search for: vc_handle_mmio

...sev-es.c | 78 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index e3662723ed76..84958a82f8e0 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -552,6 +552,74 @@ static enum es_result vc_handle_mmio_twobyte_ops(struct ghcb *ghcb, return ret; } +/* + * The MOVS instruction has two memory operands, which raises the + * problem that it is not known whether the access to the source or the + * destination caused the #VC exception (and hence whether an MMIO read + * or write operation needs to...

...1 = vc_slow_virt_to_phys(ghcb, (unsigned long)ref); + exit_info_2 = bytes; /* Can never be greater than 8 */ + + ghcb->save.sw_scratch = ghcb_pa + offsetof(struct ghcb, shared_buffer); + + return sev_es_ghcb_hv_call(ghcb, ctxt, exit_code, exit_info_1, exit_info_2); +} + +static enum es_result vc_handle_mmio_twobyte_ops(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + struct insn *insn = &ctxt->insn; + unsigned int bytes = 0; + enum es_result ret; + int sign_byte; + long *reg_data; + + switch (insn->opcode.bytes[1]) { + /* MMIO Read w/ zero-extension */ + case 0xb6: + bytes = 1; +...

...return ES_EXCEPTION; + } + + exit_info_1 = paddr; + exit_info_2 = bytes; /* Can never be greater than 8 */ + + ghcb->save.sw_scratch = ghcb_pa + offsetof(struct ghcb, shared_buffer); + + return sev_es_ghcb_hv_call(ghcb, ctxt, exit_code, exit_info_1, exit_info_2); +} + +static enum es_result vc_handle_mmio_twobyte_ops(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + struct insn *insn = &ctxt->insn; + unsigned int bytes = 0; + enum es_result ret; + int sign_byte; + long *reg_data; + + switch (insn->opcode.bytes[1]) { + /* MMIO Read w/ zero-extension */ + case 0xb6: + bytes = 1; +...

...unsigned long exit_code) @@ -860,6 +876,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_WBINVD: result = vc_handle_wbinvd(ghcb, ctxt); break; + case SVM_EXIT_MONITOR: + result = vc_handle_monitor(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = vc_handle_mmio(ghcb, ctxt); break; -- 2.17.1

...nel * switched to virtual addresses. @@ -708,6 +733,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, case SVM_EXIT_IOIO: result = vc_handle_ioio(ghcb, ctxt); break; + case SVM_EXIT_MSR: + result = vc_handle_msr(ghcb, ctxt); + break; case SVM_EXIT_NPF: result = vc_handle_mmio(ghcb, ctxt); break; -- 2.17.1

..., 124 insertions(+), 7 deletions(-) >> >> diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c >> index 03095bc7b563..0303834d4811 100644 >> --- a/arch/x86/kernel/sev-es.c >> +++ b/arch/x86/kernel/sev-es.c >> @@ -744,6 +758,91 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, >> return ret; >> } >> >> +static unsigned long sev_es_get_cpuid_cache_index(struct es_em_ctxt *ctxt) >> +{ >> + unsigned long hi, lo; >> + >> + /* Don't attempt to cache until the xarray is initialized */ >> + if (!sev_e...

...f(&ctxt->insn, ctxt->regs); + + if (offset < 0) + return NULL; + + offset /= sizeof(long); + + return reg_array + offset; +} static enum es_result vc_do_mmio(struct ghcb *ghcb, struct es_em_ctxt *ctxt, unsigned int bytes, bool read) { @@ -720,6 +744,61 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, return ret; } +static enum es_result vc_handle_dr7_write(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) +{ + struct sev_es_runtime_data *data = this_cpu_read(runtime_data); + long val, *reg = vc_insn_get_rm(ctxt); + enum es_result ret; + + if (!reg) + return ES_DECODE_...

...6,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, > case SVM_EXIT_WBINVD: > result = vc_handle_wbinvd(ghcb, ctxt); > break; > + case SVM_EXIT_MONITOR: > + result = vc_handle_monitor(ghcb, ctxt); > + break; > case SVM_EXIT_NPF: > result = vc_handle_mmio(ghcb, ctxt); > break; > -- > 2.17.1 >

...6,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, > case SVM_EXIT_WBINVD: > result = vc_handle_wbinvd(ghcb, ctxt); > break; > + case SVM_EXIT_MONITOR: > + result = vc_handle_monitor(ghcb, ctxt); > + break; > case SVM_EXIT_NPF: > result = vc_handle_mmio(ghcb, ctxt); > break; > -- > 2.17.1 >

...__aligned(PAGE_SIZE); @@ -463,6 +474,9 @@ void __init sev_es_init_vc_handling(void) sev_es_setup_vc_stack(cpu); } + xa_init_flags(&sev_es_cpuid_cache, XA_FLAGS_LOCK_IRQ); + sev_es_cpuid_cache_initialized = true; + init_vc_stack_names(); } @@ -744,6 +758,91 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, return ret; } +static unsigned long sev_es_get_cpuid_cache_index(struct es_em_ctxt *ctxt) +{ + unsigned long hi, lo; + + /* Don't attempt to cache until the xarray is initialized */ + if (!sev_es_cpuid_cache_initialized) + return ULONG_MAX; + + lo = lower_32_bits(ctxt-&...

..._init sev_es_init_vc_handling(void) > sev_es_setup_vc_stack(cpu); > } > > + xa_init_flags(&sev_es_cpuid_cache, XA_FLAGS_LOCK_IRQ); > + sev_es_cpuid_cache_initialized = true; > + > init_vc_stack_names(); > } > > @@ -744,6 +758,91 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, > return ret; > } > > +static unsigned long sev_es_get_cpuid_cache_index(struct es_em_ctxt *ctxt) > +{ > + unsigned long hi, lo; > + > + /* Don't attempt to cache until the xarray is initialized */ > + if (!sev_es_cpuid_cache_initialized) >...

..._init sev_es_init_vc_handling(void) > sev_es_setup_vc_stack(cpu); > } > > + xa_init_flags(&sev_es_cpuid_cache, XA_FLAGS_LOCK_IRQ); > + sev_es_cpuid_cache_initialized = true; > + > init_vc_stack_names(); > } > > @@ -744,6 +758,91 @@ static enum es_result vc_handle_mmio(struct ghcb *ghcb, > return ret; > } > > +static unsigned long sev_es_get_cpuid_cache_index(struct es_em_ctxt *ctxt) > +{ > + unsigned long hi, lo; > + > + /* Don't attempt to cache until the xarray is initialized */ > + if (!sev_es_cpuid_cache_initialized) >...

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by

From: Joerg Roedel <jroedel at suse.de> Hi, here is a rebased version of the latest SEV-ES patches. They are now based on latest tip/master instead of upstream Linux and include the necessary changes. Changes to v4 are in particular: - Moved early IDT setup code to idt.c, because the idt_descr and the idt_table are now static - This required to make stack protector work early (or

From: Joerg Roedel <jroedel at suse.de> Hi, here is the fourth version of the SEV-ES Guest Support patches. I addressed the review comments sent to me for the previous version and rebased the code v5.8-rc5. The biggest change in this version is the IST handling code for the #VC handler. I adapted the entry code for the #VC handler to the big pile of entry code changes merged into

From: Joerg Roedel <jroedel at suse.de> Hi, here is the fourth version of the SEV-ES Guest Support patches. I addressed the review comments sent to me for the previous version and rebased the code v5.8-rc5. The biggest change in this version is the IST handling code for the #VC handler. I adapted the entry code for the #VC handler to the big pile of entry code changes merged into

From: Joerg Roedel <jroedel at suse.de> Hi, here is the new version of the SEV-ES client enabling patch-set. It is based on the latest tip/master branch and contains the necessary changes. In particular those ar: - Enabling CR4.FSGSBASE early on supported processors so that early #VC exceptions on APs can be handled. - Add another patch (patch 1) to fix a KVM frame-size build

From: Joerg Roedel <jroedel at suse.de> Hi, here is a new version of the SEV-ES Guest Support patches for x86. The previous versions can be found as a linked list starting here: https://lore.kernel.org/lkml/20200824085511.7553-1-joro at 8bytes.org/ I updated the patch-set based on ther review comments I got and the discussions around it. Another important change is that the early IDT

From: Joerg Roedel <jroedel at suse.de> Hi, here is a new version of the SEV-ES Guest Support patches for x86. The previous versions can be found as a linked list starting here: https://lore.kernel.org/lkml/20200824085511.7553-1-joro at 8bytes.org/ I updated the patch-set based on ther review comments I got and the discussions around it. Another important change is that the early IDT