Displaying 6 results from an estimated 6 matches for "sev_es_cpuid_cache".
2020 Apr 28
0
[PATCH v3 64/75] x86/sev-es: Cache CPUID results for improved performance
...@@ -19,6 +19,7 @@
#include <linux/memblock.h>
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/xarray.h>
#include <generated/asm-offsets.h>
#include <asm/cpu_entry_area.h>
@@ -33,6 +34,16 @@
#define DR7_RESET_VALUE 0x400
+struct sev_es_cpuid_cache_entry {
+ unsigned long eax;
+ unsigned long ebx;
+ unsigned long ecx;
+ unsigned long edx;
+};
+
+static struct xarray sev_es_cpuid_cache;
+static bool __ro_after_init sev_es_cpuid_cache_initialized;
+
/* For early boot hypervisor communication in SEV-ES enabled guests */
static struct ghcb boot...
2020 May 20
2
[PATCH v3 64/75] x86/sev-es: Cache CPUID results for improved performance
...nto vc_handle_cpuid_cached()
> - Used lower_32_bits() where applicable
> - Moved cache_index out of struct es_em_ctxt ]
> Co-developed-by: Joerg Roedel <jroedel at suse.de>
> Signed-off-by: Joerg Roedel <jroedel at suse.de>
> ---
...
> +struct sev_es_cpuid_cache_entry {
> + unsigned long eax;
> + unsigned long ebx;
> + unsigned long ecx;
> + unsigned long edx;
Why are these unsigned longs? CPUID returns 32-bit values, this wastes 16
bytes per entry.
> +};
> +
> +static struct xarray sev_es_cpuid_cache;
> +static bool __ro_after_i...
2020 May 20
2
[PATCH v3 64/75] x86/sev-es: Cache CPUID results for improved performance
...nto vc_handle_cpuid_cached()
> - Used lower_32_bits() where applicable
> - Moved cache_index out of struct es_em_ctxt ]
> Co-developed-by: Joerg Roedel <jroedel at suse.de>
> Signed-off-by: Joerg Roedel <jroedel at suse.de>
> ---
...
> +struct sev_es_cpuid_cache_entry {
> + unsigned long eax;
> + unsigned long ebx;
> + unsigned long ecx;
> + unsigned long edx;
Why are these unsigned longs? CPUID returns 32-bit values, this wastes 16
bytes per entry.
> +};
> +
> +static struct xarray sev_es_cpuid_cache;
> +static bool __ro_after_i...
2020 Apr 28
0
[PATCH v3 73/75] x86/sev-es: Support CPU offline/online
...inline void sev_es_setup_play_dead(void) { }
+#endif
+
static void __init sev_es_alloc_runtime_data(int cpu)
{
struct sev_es_runtime_data *data;
@@ -540,6 +596,8 @@ void __init sev_es_init_vc_handling(void)
sev_es_setup_vc_stack(cpu);
}
+ sev_es_setup_play_dead();
+
xa_init_flags(&sev_es_cpuid_cache, XA_FLAGS_LOCK_IRQ);
sev_es_cpuid_cache_initialized = true;
--
2.17.1
2020 Apr 28
116
[PATCH v3 00/75] x86: SEV-ES Guest Support
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
2020 Apr 28
116
[PATCH v3 00/75] x86: SEV-ES Guest Support
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