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hv: tlb: wrap common APIs 

Wrap two common TLB APIs: flush_tlb and flush_tlb_range.

Tracked-On: #5830
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1 2021-04-23 15:24:50 +08:00 committed by wenlingz
parent d94582389e
commit 77e64f6092
3 changed files with 22 additions and 13 deletions
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14
hypervisor/arch/x86/mmu.c
View File

@ -313,3 +313,17 @@ void flush_address_space(void *addr, uint64_t size)
n += CACHE_LINE_SIZE;
}
}
void flush_tlb(uint64_t addr)
{
invlpg(addr);
}
void flush_tlb_range(uint64_t addr, uint64_t size)
{
uint64_t linear_addr;
for (linear_addr = addr; linear_addr < (addr + size); linear_addr += PAGE_SIZE) {
invlpg(linear_addr);
}
}

15
hypervisor/arch/x86/rtcm.c
View File

@ -24,17 +24,6 @@ static struct rtct_entry_data_rtcm_binary *rtcm_binary = NULL;
static struct acpi_table_header *acpi_rtct_tbl = NULL;
static inline void rtcm_flush_binary_tlb(void)
{
uint64_t linear_addr, start_addr = (uint64_t)hpa2hva(rtcm_binary->address);
uint64_t end_addr = start_addr + rtcm_binary->size;
for (linear_addr = start_addr; linear_addr < end_addr; linear_addr += PAGE_SIZE) {
invlpg(linear_addr);
}
}
static inline void *get_rtct_entry_base()
{
return (void *)acpi_rtct_tbl + sizeof(*acpi_rtct_tbl);
@ -133,7 +122,7 @@ bool init_software_sram(bool is_bsp)
ASSERT(header->magic == RTCM_MAGIC, "Incorrect RTCM magic!");
/* Flush the TLB, so that BSP/AP can execute the RTCM ABI */
rtcm_flush_binary_tlb();
flush_tlb_range((uint64_t)hpa2hva(rtcm_binary->address), rtcm_binary->size);
rtcm_command_func = (rtcm_abi_func)(hpa2hva(rtcm_binary->address) + header->command_offset);
pr_info("rtcm command function is found at %llx", rtcm_command_func);
rtcm_ret_code = rtcm_command_func(RTCM_CMD_INIT_SOFTWARE_SRAM, get_rtct_entry_base());
@ -149,7 +138,7 @@ bool init_software_sram(bool is_bsp)
bitmap_set_lock(get_pcpu_id(), &init_sw_sram_cpus_mask);
wait_sync_change(&init_sw_sram_cpus_mask, ALL_CPUS_MASK);
/* Flush the TLB on BSP and all APs to restore the NX for Software SRAM area */
rtcm_flush_binary_tlb();
flush_tlb_range((uint64_t)hpa2hva(rtcm_binary->address), rtcm_binary->size);
if (is_bsp) {
is_sw_sram_initialized = true;

6
hypervisor/include/arch/x86/asm/mmu.h
View File

@ -200,6 +200,12 @@ static inline uint64_t get_pae_pdpt_addr(uint64_t cr3)
return (cr3 & 0xFFFFFFE0UL);
}
/*
* flush TLB only for the specified page with the address
*/
void flush_tlb(uint64_t addr);
void flush_tlb_range(uint64_t addr, uint64_t size);
/**
* @}
*/