From: Brijesh Singh <brijesh.singh@amd.com> To: qemu-devel@nongnu.org Cc: Alistair Francis <alistair.francis@xilinx.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Cornelia Huck <cornelia.huck@de.ibm.com>, "Daniel P . Berrange" <berrange@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, "Edgar E . Iglesias " <edgar.iglesias@xilinx.com>, Eduardo Habkost <ehabkost@redhat.com>, Eric Blake <eblake@redhat.com>, kvm@vger.kernel.org, Marcel Apfelbaum <marcel@redhat.com>, Markus Armbruster <armbru@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Crosthwaite <crosthwaite.peter@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Richard Henderson <rth@twiddle.net>, Stefan Hajnoczi <stefanha@gmail.com>, Thomas Lendacky < Subject: [PATCH v5 02/23] exec: add ram_debug_ops support Date: Wed, 6 Dec 2017 14:03:25 -0600 [thread overview] Message-ID: <20171206200346.116537-3-brijesh.singh@amd.com> (raw) In-Reply-To: <20171206200346.116537-1-brijesh.singh@amd.com> Currently, the guest memory access for the debug purpose is performed using the memcpy(). Lets extend the 'struct MemoryRegion' to include ram_debug_ops callbacks. The ram_debug_ops can be used to override memcpy() with something else. The feature can be used by encrypted guest -- which can register callbacks to override memcpy() with memory encryption/decryption APIs. a typical usage: mem_read(uint8_t *dst, uint8_t *src, uint32_t len, MemTxAttrs *attrs); mem_write(uint8_t *dst, uint8_t *src, uint32_t len, MemTxAttrs *attrs); MemoryRegionRAMReadWriteOps ops; ops.read = mem_read; ops.write = mem_write; memory_region_init_ram(mem, NULL, "memory", size, NULL); memory_region_set_ram_debug_ops(mem, ops); Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> --- exec.c | 65 ++++++++++++++++++++++++++++++++++++++------------- include/exec/memory.h | 27 +++++++++++++++++++++ 2 files changed, 76 insertions(+), 16 deletions(-) diff --git a/exec.c b/exec.c index 03238a3449d9..9b0ab1648945 100644 --- a/exec.c +++ b/exec.c @@ -2981,7 +2981,11 @@ static MemTxResult flatview_write_continue(FlatView *fv, hwaddr addr, } else { /* RAM case */ ptr = qemu_ram_ptr_length(mr->ram_block, addr1, &l, false); - memcpy(ptr, buf, l); + if (attrs.debug && mr->ram_debug_ops) { + mr->ram_debug_ops->write(ptr, buf, l, attrs); + } else { + memcpy(ptr, buf, l); + } invalidate_and_set_dirty(mr, addr1, l); } @@ -3079,7 +3083,10 @@ MemTxResult flatview_read_continue(FlatView *fv, hwaddr addr, } else { /* RAM case */ ptr = qemu_ram_ptr_length(mr->ram_block, addr1, &l, false); - memcpy(buf, ptr, l); + if (attrs.debug && mr->ram_debug_ops) + mr->ram_debug_ops->read(buf, ptr, l, attrs); + else + memcpy(buf, ptr, l); } if (release_lock) { @@ -3149,11 +3156,13 @@ void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, enum write_rom_type { WRITE_DATA, + READ_DATA, FLUSH_CACHE, }; -static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, - hwaddr addr, const uint8_t *buf, int len, enum write_rom_type type) +static inline void cpu_physical_memory_rw_debug_internal(AddressSpace *as, + hwaddr addr, uint8_t *buf, int len, MemTxAttrs attrs, + enum write_rom_type type) { hwaddr l; uint8_t *ptr; @@ -3168,12 +3177,33 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, if (!(memory_region_is_ram(mr) || memory_region_is_romd(mr))) { l = memory_access_size(mr, l, addr1); + /* Pass MMIO down to address address_space_rw */ + switch (type) { + case READ_DATA: + case WRITE_DATA: + address_space_rw(as, addr1, attrs, buf, l, + type == WRITE_DATA); + break; + case FLUSH_CACHE: + break; + } } else { /* ROM/RAM case */ ptr = qemu_map_ram_ptr(mr->ram_block, addr1); switch (type) { + case READ_DATA: + if (mr->ram_debug_ops) { + mr->ram_debug_ops->read(buf, ptr, l, attrs); + } else { + memcpy(buf, ptr, l); + } + break; case WRITE_DATA: - memcpy(ptr, buf, l); + if (mr->ram_debug_ops) { + mr->ram_debug_ops->write(ptr, buf, l, attrs); + } else { + memcpy(ptr, buf, l); + } invalidate_and_set_dirty(mr, addr1, l); break; case FLUSH_CACHE: @@ -3192,7 +3222,8 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr, const uint8_t *buf, int len) { - cpu_physical_memory_write_rom_internal(as, addr, buf, len, WRITE_DATA); + cpu_physical_memory_rw_debug_internal(as, addr, (uint8_t *)buf, len, + MEMTXATTRS_UNSPECIFIED, WRITE_DATA); } void cpu_flush_icache_range(hwaddr start, int len) @@ -3207,8 +3238,10 @@ void cpu_flush_icache_range(hwaddr start, int len) return; } - cpu_physical_memory_write_rom_internal(&address_space_memory, - start, NULL, len, FLUSH_CACHE); + cpu_physical_memory_rw_debug_internal(&address_space_memory, + start, NULL, len, + MEMTXATTRS_UNSPECIFIED, + FLUSH_CACHE); } typedef struct { @@ -3514,6 +3547,7 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, int l; hwaddr phys_addr; target_ulong page; + int type = is_write ? WRITE_DATA : READ_DATA; cpu_synchronize_state(cpu); while (len > 0) { @@ -3523,6 +3557,10 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, page = addr & TARGET_PAGE_MASK; phys_addr = cpu_get_phys_page_attrs_debug(cpu, page, &attrs); asidx = cpu_asidx_from_attrs(cpu, attrs); + + /* set debug attribute */ + attrs.debug = 1; + /* if no physical page mapped, return an error */ if (phys_addr == -1) return -1; @@ -3530,14 +3568,9 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, if (l > len) l = len; phys_addr += (addr & ~TARGET_PAGE_MASK); - if (is_write) { - cpu_physical_memory_write_rom(cpu->cpu_ases[asidx].as, - phys_addr, buf, l); - } else { - address_space_rw(cpu->cpu_ases[asidx].as, phys_addr, - MEMTXATTRS_UNSPECIFIED, - buf, l, 0); - } + cpu_physical_memory_rw_debug_internal(cpu->cpu_ases[asidx].as, + phys_addr, buf, l, attrs, + type); len -= l; buf += l; addr += l; diff --git a/include/exec/memory.h b/include/exec/memory.h index 5ed4042f877d..546a67bf0dac 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -215,6 +215,18 @@ typedef struct IOMMUMemoryRegionClass { typedef struct CoalescedMemoryRange CoalescedMemoryRange; typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd; +/* Memory Region RAM debug callback */ +typedef struct MemoryRegionRAMReadWriteOps MemoryRegionRAMReadWriteOps; + +struct MemoryRegionRAMReadWriteOps { + /* Write data into guest memory */ + int (*write) (uint8_t *dest, const uint8_t *src, + uint32_t len, MemTxAttrs attrs); + /* Read data from guest memory */ + int (*read) (uint8_t *dest, const uint8_t *src, + uint32_t len, MemTxAttrs attrs); +}; + struct MemoryRegion { Object parent_obj; @@ -254,6 +266,7 @@ struct MemoryRegion { const char *name; unsigned ioeventfd_nb; MemoryRegionIoeventfd *ioeventfds; + const MemoryRegionRAMReadWriteOps *ram_debug_ops; }; struct IOMMUMemoryRegion { @@ -621,6 +634,20 @@ void memory_region_init_rom_device_nomigrate(MemoryRegion *mr, Error **errp); /** + * memory_region_set_ram_debug_ops: Set debug access ops for a given memory region + * + * @mr: the #MemoryRegion to be initialized + * @ops: a function that will be used for when accessing @target region during + * debug + */ +static inline void +memory_region_set_ram_debug_ops(MemoryRegion *mr, + const MemoryRegionRAMReadWriteOps *ops) +{ + mr->ram_debug_ops = ops; +} + +/** * memory_region_init_reservation: Initialize a memory region that reserves * I/O space. * -- 2.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Brijesh Singh <brijesh.singh@amd.com> To: qemu-devel@nongnu.org Cc: Alistair Francis <alistair.francis@xilinx.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Cornelia Huck <cornelia.huck@de.ibm.com>, "Daniel P . Berrange" <berrange@redhat.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, "Edgar E . Iglesias " <edgar.iglesias@xilinx.com>, Eduardo Habkost <ehabkost@redhat.com>, Eric Blake <eblake@redhat.com>, kvm@vger.kernel.org, Marcel Apfelbaum <marcel@redhat.com>, Markus Armbruster <armbru@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Peter Crosthwaite <crosthwaite.peter@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Richard Henderson <rth@twiddle.net>, Stefan Hajnoczi <stefanha@gmail.com>, Thomas Lendacky <Thomas.Lendacky@amd.com>, Borislav Petkov <bp@suse.de>, Brijesh Singh <brijesh.singh@amd.com> Subject: [Qemu-devel] [PATCH v5 02/23] exec: add ram_debug_ops support Date: Wed, 6 Dec 2017 14:03:25 -0600 [thread overview] Message-ID: <20171206200346.116537-3-brijesh.singh@amd.com> (raw) In-Reply-To: <20171206200346.116537-1-brijesh.singh@amd.com> Currently, the guest memory access for the debug purpose is performed using the memcpy(). Lets extend the 'struct MemoryRegion' to include ram_debug_ops callbacks. The ram_debug_ops can be used to override memcpy() with something else. The feature can be used by encrypted guest -- which can register callbacks to override memcpy() with memory encryption/decryption APIs. a typical usage: mem_read(uint8_t *dst, uint8_t *src, uint32_t len, MemTxAttrs *attrs); mem_write(uint8_t *dst, uint8_t *src, uint32_t len, MemTxAttrs *attrs); MemoryRegionRAMReadWriteOps ops; ops.read = mem_read; ops.write = mem_write; memory_region_init_ram(mem, NULL, "memory", size, NULL); memory_region_set_ram_debug_ops(mem, ops); Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Crosthwaite <crosthwaite.peter@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> --- exec.c | 65 ++++++++++++++++++++++++++++++++++++++------------- include/exec/memory.h | 27 +++++++++++++++++++++ 2 files changed, 76 insertions(+), 16 deletions(-) diff --git a/exec.c b/exec.c index 03238a3449d9..9b0ab1648945 100644 --- a/exec.c +++ b/exec.c @@ -2981,7 +2981,11 @@ static MemTxResult flatview_write_continue(FlatView *fv, hwaddr addr, } else { /* RAM case */ ptr = qemu_ram_ptr_length(mr->ram_block, addr1, &l, false); - memcpy(ptr, buf, l); + if (attrs.debug && mr->ram_debug_ops) { + mr->ram_debug_ops->write(ptr, buf, l, attrs); + } else { + memcpy(ptr, buf, l); + } invalidate_and_set_dirty(mr, addr1, l); } @@ -3079,7 +3083,10 @@ MemTxResult flatview_read_continue(FlatView *fv, hwaddr addr, } else { /* RAM case */ ptr = qemu_ram_ptr_length(mr->ram_block, addr1, &l, false); - memcpy(buf, ptr, l); + if (attrs.debug && mr->ram_debug_ops) + mr->ram_debug_ops->read(buf, ptr, l, attrs); + else + memcpy(buf, ptr, l); } if (release_lock) { @@ -3149,11 +3156,13 @@ void cpu_physical_memory_rw(hwaddr addr, uint8_t *buf, enum write_rom_type { WRITE_DATA, + READ_DATA, FLUSH_CACHE, }; -static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, - hwaddr addr, const uint8_t *buf, int len, enum write_rom_type type) +static inline void cpu_physical_memory_rw_debug_internal(AddressSpace *as, + hwaddr addr, uint8_t *buf, int len, MemTxAttrs attrs, + enum write_rom_type type) { hwaddr l; uint8_t *ptr; @@ -3168,12 +3177,33 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, if (!(memory_region_is_ram(mr) || memory_region_is_romd(mr))) { l = memory_access_size(mr, l, addr1); + /* Pass MMIO down to address address_space_rw */ + switch (type) { + case READ_DATA: + case WRITE_DATA: + address_space_rw(as, addr1, attrs, buf, l, + type == WRITE_DATA); + break; + case FLUSH_CACHE: + break; + } } else { /* ROM/RAM case */ ptr = qemu_map_ram_ptr(mr->ram_block, addr1); switch (type) { + case READ_DATA: + if (mr->ram_debug_ops) { + mr->ram_debug_ops->read(buf, ptr, l, attrs); + } else { + memcpy(buf, ptr, l); + } + break; case WRITE_DATA: - memcpy(ptr, buf, l); + if (mr->ram_debug_ops) { + mr->ram_debug_ops->write(ptr, buf, l, attrs); + } else { + memcpy(ptr, buf, l); + } invalidate_and_set_dirty(mr, addr1, l); break; case FLUSH_CACHE: @@ -3192,7 +3222,8 @@ static inline void cpu_physical_memory_write_rom_internal(AddressSpace *as, void cpu_physical_memory_write_rom(AddressSpace *as, hwaddr addr, const uint8_t *buf, int len) { - cpu_physical_memory_write_rom_internal(as, addr, buf, len, WRITE_DATA); + cpu_physical_memory_rw_debug_internal(as, addr, (uint8_t *)buf, len, + MEMTXATTRS_UNSPECIFIED, WRITE_DATA); } void cpu_flush_icache_range(hwaddr start, int len) @@ -3207,8 +3238,10 @@ void cpu_flush_icache_range(hwaddr start, int len) return; } - cpu_physical_memory_write_rom_internal(&address_space_memory, - start, NULL, len, FLUSH_CACHE); + cpu_physical_memory_rw_debug_internal(&address_space_memory, + start, NULL, len, + MEMTXATTRS_UNSPECIFIED, + FLUSH_CACHE); } typedef struct { @@ -3514,6 +3547,7 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, int l; hwaddr phys_addr; target_ulong page; + int type = is_write ? WRITE_DATA : READ_DATA; cpu_synchronize_state(cpu); while (len > 0) { @@ -3523,6 +3557,10 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, page = addr & TARGET_PAGE_MASK; phys_addr = cpu_get_phys_page_attrs_debug(cpu, page, &attrs); asidx = cpu_asidx_from_attrs(cpu, attrs); + + /* set debug attribute */ + attrs.debug = 1; + /* if no physical page mapped, return an error */ if (phys_addr == -1) return -1; @@ -3530,14 +3568,9 @@ int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, if (l > len) l = len; phys_addr += (addr & ~TARGET_PAGE_MASK); - if (is_write) { - cpu_physical_memory_write_rom(cpu->cpu_ases[asidx].as, - phys_addr, buf, l); - } else { - address_space_rw(cpu->cpu_ases[asidx].as, phys_addr, - MEMTXATTRS_UNSPECIFIED, - buf, l, 0); - } + cpu_physical_memory_rw_debug_internal(cpu->cpu_ases[asidx].as, + phys_addr, buf, l, attrs, + type); len -= l; buf += l; addr += l; diff --git a/include/exec/memory.h b/include/exec/memory.h index 5ed4042f877d..546a67bf0dac 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -215,6 +215,18 @@ typedef struct IOMMUMemoryRegionClass { typedef struct CoalescedMemoryRange CoalescedMemoryRange; typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd; +/* Memory Region RAM debug callback */ +typedef struct MemoryRegionRAMReadWriteOps MemoryRegionRAMReadWriteOps; + +struct MemoryRegionRAMReadWriteOps { + /* Write data into guest memory */ + int (*write) (uint8_t *dest, const uint8_t *src, + uint32_t len, MemTxAttrs attrs); + /* Read data from guest memory */ + int (*read) (uint8_t *dest, const uint8_t *src, + uint32_t len, MemTxAttrs attrs); +}; + struct MemoryRegion { Object parent_obj; @@ -254,6 +266,7 @@ struct MemoryRegion { const char *name; unsigned ioeventfd_nb; MemoryRegionIoeventfd *ioeventfds; + const MemoryRegionRAMReadWriteOps *ram_debug_ops; }; struct IOMMUMemoryRegion { @@ -621,6 +634,20 @@ void memory_region_init_rom_device_nomigrate(MemoryRegion *mr, Error **errp); /** + * memory_region_set_ram_debug_ops: Set debug access ops for a given memory region + * + * @mr: the #MemoryRegion to be initialized + * @ops: a function that will be used for when accessing @target region during + * debug + */ +static inline void +memory_region_set_ram_debug_ops(MemoryRegion *mr, + const MemoryRegionRAMReadWriteOps *ops) +{ + mr->ram_debug_ops = ops; +} + +/** * memory_region_init_reservation: Initialize a memory region that reserves * I/O space. * -- 2.9.5
next prev parent reply other threads:[~2017-12-06 20:04 UTC|newest] Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-12-06 20:03 [PATCH v5 00/23] x86: Secure Encrypted Virtualization (AMD) Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 01/23] memattrs: add debug attribute Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 22:03 ` Peter Maydell 2017-12-06 22:03 ` [Qemu-devel] " Peter Maydell 2017-12-07 21:20 ` Brijesh Singh 2017-12-07 21:20 ` [Qemu-devel] " Brijesh Singh 2017-12-08 9:55 ` Peter Maydell 2017-12-08 9:55 ` [Qemu-devel] " Peter Maydell 2017-12-08 10:24 ` Edgar E. Iglesias 2017-12-08 10:24 ` [Qemu-devel] " Edgar E. Iglesias 2017-12-08 22:57 ` Brijesh Singh 2017-12-08 22:57 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` Brijesh Singh [this message] 2017-12-06 20:03 ` [Qemu-devel] [PATCH v5 02/23] exec: add ram_debug_ops support Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 03/23] exec: add debug version of physical memory read and write API Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 04/23] monitor/i386: use debug APIs when accessing guest memory Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 05/23] target/i386: add memory encryption feature cpuid support Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 06/23] machine: add -memory-encryption property Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 07/23] kvm: update kvm.h to include memory encryption ioctls Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 08/23] docs: add AMD Secure Encrypted Virtualization (SEV) Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 09/23] accel: add Secure Encrypted Virtulization (SEV) object Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 10/23] sev: add command to initialize the memory encryption context Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 11/23] sev: register the guest memory range which may contain encrypted data Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 12/23] kvm: introduce memory encryption APIs Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 13/23] hmp: display memory encryption support in 'info kvm' Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 14/23] sev: add command to create launch memory encryption context Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 15/23] sev: add command to encrypt guest memory region Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 16/23] target/i386: encrypt bios rom Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 17/23] qapi: add SEV_MEASUREMENT event Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 18/23] sev: emit the " Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 19/23] sev: Finalize the SEV guest launch flow Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 20/23] hw: i386: set ram_debug_ops when memory encryption is enabled Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 21/23] sev: add debug encrypt and decrypt commands Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 22/23] target/i386: clear C-bit when walking SEV guest page table Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-06 20:03 ` [PATCH v5 23/23] sev: add migration blocker Brijesh Singh 2017-12-06 20:03 ` [Qemu-devel] " Brijesh Singh 2017-12-07 11:03 ` Dr. David Alan Gilbert 2017-12-07 11:03 ` [Qemu-devel] " Dr. David Alan Gilbert 2017-12-07 11:10 ` Peter Maydell 2017-12-07 11:10 ` [Qemu-devel] " Peter Maydell 2017-12-07 11:27 ` Dr. David Alan Gilbert 2017-12-07 11:27 ` [Qemu-devel] " Dr. David Alan Gilbert 2017-12-07 21:25 ` Brijesh Singh 2017-12-07 21:25 ` [Qemu-devel] " Brijesh Singh 2017-12-07 22:50 ` Brijesh Singh 2017-12-07 22:50 ` [Qemu-devel] " Brijesh Singh
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